C7 K2 Finds

• by ajamyajax

  Re 213070332: all right, I get "first light" for the new campaign data this time. 😃 This one looks like an RR Lyrae named V1244 Sgr per VSX. And this is where I will stop until you all can look at this data as well.

  I am now running my minimal correction batch program for C7.. It will probably take me 4-5 days to create CSV files for 13,469 targets however, if all goes well. Hopefully MAST will be faster than that.. (Edit: looks like it is ready.) So we'll see what we can find.

  s1=2469.11 p1=0.6676 d1=0.10 (2.4 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213070332 , 2MASS J19051618-3054324 , 11.362 , 10.770 , 10.656 , 0.592 , 0.114 , ('K5V', 0.75) , ('K3V', 0.81)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213070332 286.3174 -30.9090 0.07 13.125 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213070332,2MASS J19051618-3054324,286.317424,-30.909003,4633.00,11.26,1.33,13.125,-2.300,1.600,
  

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.02 Variable V1244 Sgr 000-BFF-686 19 05 16.13 -30 54 31.7 Sgr RRAB 0.667532 14.6 - 15.8 p

  Listed as V* V1244 Sgr -- Variable Star of RR Lyr type on Simbad.

  

  Posted April 22, 2016 7:41 PM

• by zoo3hans

  Ok, I start from the end of the batch (as usual):

  glitches

  BKJD 2490.75 - 2491.3

  BKJD 2520.11

  C7_K2 planet candidates (transits) including additional candidates from the C7_K2_Korr light curves (by courtesy of Andrew Vanderburg, and Al Schmitt with his excellent LcViewer)

  EPIC 213220822 Already mentioned by Ivan P=6.48125 days, starting at BKJD 2469.7, depth 0.007, duration about 4.5 hours.

  EPIC 213391329 Already mentioned by Ivan P=4.43 days, depth 0.018, duration about 5 hours.

  EPIC 213498963 Already mentioned by Ivan P=5.361 days, starting at BKJD 2473.17, depth 0.0065, duration about 8 hours, U-shaped.

  EPIC 213563657 Another case where Ivan thinks it's an EB, but I think it could also be a Hot Jupiter. P=3.413 days, starting at BKJD 2471.3, depth 0.04, duration about 4 hours.

  EPIC 213936801 Using ajamyajax's min. corrected LC's: I think this star shows regular dips with P=1.29925 days, starting at BKJD 2469.01, depth 0.013, duration about 3.5 hours. Mark has found a contaminating EB nearby though.

  EPIC 214173069 I agree with Ivan. P=8.773 days, starting at BKJD 2470.92, depth 0.001, duration about 4 hours.

  EPIC 214479256 Using ajamyajax's min. corrected LC's: Maybe single transit at BKJD 2496.17 , depth 0.022, duration about 9 hours.

  EPIC 214611894 Another case where Ivan thinks it's an EB, but I think it could also be a Warm Jupiter. P=21.567 days, starting at BKJD 2471.29, depth 0.029, duration about 5 hours. No secondary visible, nicely U-shaped.

  EPIC 214741009 As mentioned by Ivan (votes for an EB) and JKD (votes for a PC), possible PC but could also be an EB, P=7.268 days, starting at BKJD 2468.59, depth 0.01, duration about 3 hours, fairly V-shaped.

  EPIC 214888033 Also on Ivan's list: P=7.455 days, starting at BKJD 2473.88, depth 0.003, duration about 2 hours.

  EPIC 215059864 Maybe single transit at BKJD 2535.25, depth 0.003, duration about 9 hours.

  EPIC 215079410 Maybe single transit at BKJD 2494.04, depth 0.003, duration about 46 hours.

  EPIC 215086199 Maybe P=42.67 days, at BKJD 2493.25 and 2535.92, depth 0.005, duration about 4 hours.

  EPIC 215090200 P=2.483 days, starting at BKJD 2469.4, depth 0.0025, duration about 5 hours.

  EPIC 215101303 Another case where Ivan thinks it's an EB, but I think it could also be a Hot (or rather Warm) Jupiter. P=15.205 days, starting at BKJD 2472.65, depth 0.0257, duration about 4.5 hours.

  EPIC 215169384 P=40.61 days, eccentrical orbit, starting at BKJD 2489.38, depth 0.0005, duration about 5 hours.

  EPIC 215358983 Also on Ivan's list: P=6.419 days, starting at BKJD 2470.44, depth 0.0234, duration about 7 hours. U-shaped, no secondaries, a perfect Hot Jupiter for me.

  EPIC 215364084 P=2.74 days, starting at BKJD 2467.27, depth 0.002, duration about 5.5 hours.

  EPIC 215367799 Also on Ivan's list: P=1.499 days, starting at BKJD 2469.4, depth 0.0014, duration about 4.5 hours.

  EPIC 215389654 As Ivan noticed: P=23.525 days, starting at BKJD 2476.95, depth 0.0415, duration about 9 hours. U-shaped. It looks like a possible planet, but the star must be small and the planet large. No secondaries.

  EPIC 215395410 Maybe single transit at BKJD 2478.21, depth 0.0004, duration about 8 hours.

  EPIC 215460540 Several single transits possible here: at BKJD 2475.89, depth 0.0004, duration about 24.5 hours, at BKJD 2506.77, depth 0.0004, duration 8 hours, at BKJD 2513.23, depth 0.0005, duration 6 hours, at BKJD 2535.4, depth 0.0003, duration 25 hours.

  EPIC 215501561 Ivan has this star as an EB on his list, but I think it could be a PC, P=1.9865 days, starting at BKJD 2469.3, depth 0.018, duration about 3.5 hours.

  EPIC 215626177 Mentioned by Ivan on page 1, P=2.077 days, starting at BKJD 2470.11, depth 0.0013, duration about 4 hours.

  EPIC 215682672 P=1.961475 days, starting at BKJD 2469.4, depth 0.00016, duration about 1 hour.

  EPIC 215816368 Ivan has this star as an EB on his list, but I think it could be a PC, P=10.146 days, starting at BKJD 2471.55, depth 0.025, duration about 5.5 hours, fairly U-shaped.

  EPIC 215854715 P=11.12 days, starting at BKJD 2477.08, depth 0.0003, duration about 4 hours.

  EPIC 215921981 Maybe single transit at BKJD 2495.6, depth 0.0007, duration about 4 hours, V-shaped though.

  EPIC 215954155 It looks like an EB, but might be a somewhat synchronized planet: P=4.025 days, starting at BKJD 2470.32. depth 0.006, duration about 4.5 hours.

  EPIC 216008129 P=22.77 days, depth 0.0013, duration about 4.5 hours, fairly U-shaped.

  EPIC 216111905 P=3.019 days, starting at BKJD 2468.47, depth 0.0008, duration about 4 hours.

  EPIC 216116973 As Ivan noticed: P=4.14 days (not 4.149), starting at BKJD 2468.81, depth 0.0027, duration about 5 hours. Possibly TTV's present.

  EPIC 216166748 P=19.6825 days, starting at BKJD 2470.36, depth 0.0005, druarion about 5 hours.

  EPIC 216228176 Maybe single transit at BKJD 2487.38, depth 0.0035, duration about 8 hours.

  EPIC 216231580 As Ivan noticed: P=3.9055 days, starting at BKJD 2469.51, depth 0.017, duration about 4 hours.

  EPIC 216313062 P=5.193 days, starting at BKJD 2472.12, depth 0.025, duration about 7 hours, U-shaped. There are clearly secondaries visible, so it could be rather an EB instead of a Hot Jupiter.

  EPIC 216316812 P=2.5398 days, starting at BKJD 2469.24, depth 0.0012, duration about 3.5 hours. Maybe a Hot Jupiter locked in phase with the star rotation period. No secondaries visible.

  EPIC 216334329 As Ivan noticed: P=28.063 days, starting at BKJD 2483.73, depth 0.0016, duration about 4.5 hours.

  EPIC 216340209 P=36.13 days, starting at BKJD 2494.3, depth 0.0004, duration about 7 hours.

  EPIC 216414930 P=3.62 days, starting at BKJD 2469.41, depth 0.014, duration about 5 hours, U-shaped. It's HATS-11, a confirmed Hot Jupiter. See http://arxiv.org/abs/1603.02894

  EPIC 216442060 P=5.2013, starting at BKJD 2468.89, depth 0.02, duration about 4 hours.

  EPIC 216442180 P=1.567 days, starting at BKJD 2469.52, depth 0.0019, duration about 3.5 hours.

  EPIC 216468514 P=3.3135 days, starting at BKJD 2471.53, depth 0.0065, duration about 4 hours, U-shaped, perfect Hot Jupiter. Now confirmed as a planet in https://arxiv.org/abs/1611.03704

  EPIC 216494238 P=19.881 days, starting at BKJD 2474.63, depth 0.0036, duration about 8.5 hours, U-shaped.

  EPIC 216529648 P=0.5992 days, starting at BKJD 2468.6, depth 0.002, duration about 3.5 hours.

  EPIC 216562832 P=0.6635 days, starting at BKJD 2468.62, depth 0.0154, duration about 3 hours.

  EPIC 216579956 P=0.7059 days, starting at BKJD 2468.8, depth 0.003, duration 2.5 hours.

  EPIC 216766690 P=38.36 days, starting at BKJD 2494.89, depth 0.0027, duration about 11 hours.

  EPIC 216831785 Single transit at BKJD 2505.1, depth 0.0004, duration about 21.5 hours.

  EPIC 216876207 P=32.3 days, starting at BKJD 2474.62, depth 0.008, duration about 6.5 hours.

  EPIC 216892056 P=2.78565 days, starting at BKJD 2470.05, depth 0.0012, duration about 2 hours.

  EPIC 216915207 P=0.5474 days, starting at BKJD 2468.77, depth 0.007, duration 1.5 hours.

  EPIC 217026897 P=75.7 days, starting at BKJD 2472.5, depth 0.002, duration about 4.5 hours. Other dips as well.

  EPIC 217084873 Probably multiplanet system. Transits at BKJD 2473.67 , 2482.21 , 2490.84 , 2495.21 , 2499.45, 2508.05, 2516.7 , 2525.04 , 2533.82 , 2542.45 , depth around 0.003 , duration 4.5 - 6 hours. One period P1=8.6 days, starting at BKJD 2473.67, depth 0.0031, duration about 5 hours. Second period P2=29.83 days, starting at BKJD 2495.21, depth 0.0023, duration about 6 hours.

  EPIC 217106897 P=21.5 days, starting at BKJD 2473.28, depth 0.0008, duration about 6 hours.

  EPIC 217149884 P=16.695 days, starting at BKJD 2482.07, depth 0.033, duration about 6.5 hours, I see no secondaries.

  EPIC 217192839 Probably a multiplanet system. P1=16.035 days, starting at BKJD 2471.3, depth 0.00009, duration 4.5 hours. P2=26.805 days, starting at BKJD 2474.91, depth 0.0007, duration about 4 hours.

  EPIC 217231249 P=4.833 days, starting at BKJD 2471.97, depth 0.019, duration about 5.5, fairly U-shaped.

  EPIC 217274918 P=25.62 days, starting at BKJD 2476.5, depth 0.0023, duration about 7.5 days. The transit shape has interesting "wings", maybe a somewhat extended source?

  EPIC 217393088 P=1.3198 days, starting at BKJD 2469.42, depth 0.014, duration about 4 hours.

  EPIC 217671466 P=1.9155 days, starting at BKJD 2469.16, depth 0.009, duration about 4 hours, fairly U-shaped.

  EPIC 217855533 P=21.59 days, starting at BKJD 2487.39, depth 0.00015 (!), duration about 5.5 hours.

  EPIC 217951910 Dip at BKJD 2486.75, depth 0.001, duration about 3 hours.

  EPIC 217977895 P=21.7 days, starting at BKJD 2481.38, depth 0.0005, duration about 4.5 hours.

  EPIC 218088350 Maybe single transit at BKJD 2483.01, depth 0.0007, duration about 4.5 hours.

  EPIC 218131080 P=3.142 days, starting at BKJD 2468.82, depth 0.005, duration about 5.5 hours, U-shaped. It's HATS-12, a confirmed Hot Jupiter. See http://arxiv.org/abs/1603.02894

  EPIC 218170789 P=3.0413 days, starting at BKJD 2473.46, depth 0.0009, duration about 3.5 hours.

  EPIC 218187050 Maybe single transit at BKJD 2512.05, depth 0.0021, duration about 13 hours.

  EPIC 218210199 P=1.9858 days, starting at BKJD 2468.57, depth 0.013, duration about 3 hours.

  EPIC 218300572 P=1.59 days, starting at BKJD 2468.59, depth 0.0015, duration about 3 hours.

  EPIC 218414730 Maybe single long transit at BKJD 2480.15, depth 0.0011, duration about 17.5 hours.

  EPIC 218589724 EB with unknown period, but with an additional transit at BKJD 2499.13.

  EPIC 218709665 P=1.9365 days, starting at BKJD 2470.3, depth 0.024, duratiion about 3 hours.

  EPIC 218711655 P=1.1583 days, starting at BKJD 2469.58, depth 0.001, duration about 2.5 hours.

  EPIC 218712024 P=0.6189 days, starting at BKJD 2468.89, depth 0.01, duration about 2.5 hours.

  EPIC 218858534 I agree with JKD, P=44.55 days, starting at BKJD 2492.71, depth 0.0014, duration about 12 hours.

  EPIC 218864897 P=8.870 days, starting at BKJD 2474.86, depth 0.018, duration about 6 hours, U-shaped.

  EPIC 218916923 I agree with JKD, P=28.375 days, starting at BKJD 2492.84, depth 0.012, duration about 6 hours.

  EPIC 218998314 Maybe single transit at BKJD 2527.51, depth 0.003, duration about 4 hours.

  EPIC 219069169 P=14.13 days, starting at BKJD 2482.42, depth 0.024, duration about 3.5 hours. Also some interesting heartbeat feature.

  EPIC 219111248 P=4.36 days, starting at BKJD 2468.69, depth 0.0024, duration about 3.5 hours.

  EPIC 219240689 Huge single transit at BKJD 2532.66, depth 0.023, duration about 1.7 days.

  EPIC 219256848 P=20.94 days, starting at BKJD 2471.9, depth 0.0045, duration about 4 hours.

  EPIC 219343839 Maybe single transit at BKJD 2488.8, depth 0.0012, duration about 15 hours.

  EPIC 219388192 P=5.2928 days, starting at BKJD 2470.99, depth 0.011, duration about 4 hours, U-shaped. Now confirmed a a Brown Dwarf in https://arxiv.org/abs/1610.08571

  EPIC 219420915 P=0.5148 days, starting at BKJD 2468.5, depth 0.007, duration 2.5 hours.

  EPIC 219588098 Maybe single transit at BKJD 2493.09, depth 0.0009, duration about 6.5 hours.

  EPIC 219670379 Maybe single transit at BKJD 2522.81, depth 0.003, duration about 9 hours.

  EPIC 229228348 P=3.137, starting at BKJD 2468.92, depth 0.04, duration about 2.5 hours. If the star is very small, it might be a Hot Jupiter , otherwise it's an EB instead.

  EPIC 229228353 Dip at 2546.5.

  EB candidates

  EPIC 213832800 Must be an EB, single eclipse at BKJD 2488.48, depth 0.107, duration about 9 hours.

  EPIC 213936277 P=3.9225 days.

  EPIC 213983690 As Ivan has mentioned in his list this is an EB, but probably a triple system or even more complicated, I see the following additional periodical events:
  P1=1.9614 days, starting at BKJD 2469.16
  P2=0.30683 days, starting at BKJD 2469.34 (this could also be a large star spot maybe)

  EPIC 214343851 P=5.531 days. This is an interesting case of an EB and GDOR (as Ivan already pointed out in his list).

  EPIC 214608706 P=7.3505 days. This EB which is also on Ivan's list might have a Tatooine planet. Additional dips (besides the eccentrical EB) at BKJD 2494.66 and 2520.16. Depth 0.03, duration about 1 hour.

  EPIC 214676535 P=11.79 days

  EPIC 216155756 As Ivan noticed: He votes for a PC, but I'd vote for contamination by an eccentrical EB here. We have two sets of transits/eclipses with P=9.102 days, one starting at BKJD 2469.72, the other at 2475.16.

  EPIC 216456738 P=0.3375 days

  EPIC 216465617 P=15.215 days, very eccentrical orbit.

  EPIC 216472905 P=0.2217 days

  EPIC 216473899 P=1.4457 days

  EPIC 216552798 P=0.6204 days , there are secondaries visible

  EPIC 216567074 P=0.7263 days

  EPIC 216593670 P=2.324 days

  EPIC 216712967 P=8.5175 days , very eccentrical orbit.

  EPIC 216747137 Maybe triple system

  EPIC 216756275 Maybe single eclipse at BKJD 2510.1, depth 0.07, duration 9 hours.

  EPIC 216778519 P=1.2644 days

  EPIC 216931564 P=0.94125 days

  EPIC 216997973 P=1.9325 days

  EPIC 217284183 P=2.465 days

  EPIC 217402696 P=0.988 days

  EPIC 217678776 P=59.04 days

  EPIC 217684883 P=53 days, very eccentrical orbit.

  EPIC 217750936 P=0.145 days

  EPIC 217772609 P=0.922 days

  EPIC 217783102 P=6.9945 days

  EPIC 217787883 P=3.186 days

  EPIC 217988332 P=3.2467 days, resp. 6.4933 days.

  EPIC 218049550 P=0.719 days

  EPIC 218070138 P=15.101 days

  EPIC 218128870 P=1.0087 days

  EPIC 218180383 P=0.5727 days.

  EPIC 218352063 P=3.318 days

  EPIC 218429184 P=4.11 days

  EPIC 218447594 P=2.406 days

  EPIC 218532187 P=4.79 days

  EPIC 218541396 P=0.4814 days

  EPIC 218542513 P=0.9627 days

  EPIC 218628202 P=0.39 days

  EPIC 218681147 P=5.2478 days

  EPIC 218695436 P=1.55 days

  EPIC 218715272 P=2.94 days

  EPIC 218715601 P=2.934 days

  EPIC 218754715 P=9.24 days

  EPIC 218796935 P=46.6 days

  EPIC 218803648 P=14.05 days This looks like a giant EB.

  EPIC 218818199 P=1.003 days

  EPIC 218909027 P=0.6767 days

  EPIC 218973982 P=4.883 days

  EPIC 218976209 P=1.53 days

  EPIC 218981848 P=0.9975 days

  EPIC 218996355 P=0.4689 days

  EPIC 219079334 P=3.715 days

  EPIC 219156161 P=2.4725 days

  EPIC 219185362 P=0.6833 days

  EPIC 219217635 Interesting triple system, P1=0.61857 days , P2=3.5948 days.

  EPIC 219245679 P=16.08 days

  EPIC 219340893 P=11.1183 days

  EPIC 219394517 P=3.263 days

  EPIC 219496444 P=1.2867 days

  EPIC 219511354 P=1.6224 days

  EPIC 219515616 P=4.434 days

  EPIC 219517054 P=0.7486 days

  EPIC 219535682 P=2.6266 days (looks a bit like contamination though)

  EPIC 219624311 P=3.85 days

  EPIC 219730554 P=0.878 days

  EPIC 219731054 P=0.8785 days

  EPIC 219731547 P=0.8785 days (probably contamination by the above EB, which has deeper eclipses)

  EPIC 219760360 P=1.4098 days

  RR_Lyrae

  (not complete - only obvious cases)

  EPIC 216485712

  EPIC 216528778

  EPIC 216764000

  EPIC 217055868

  EPIC 217181647

  EPIC 217384231

  EPIC 217458812

  EPIC 217518156

  EPIC 217528021

  EPIC 217543366

  EPIC 217543378

  EPIC 217569872

  EPIC 217611414

  EPIC 217631682

  EPIC 217726405

  EPIC 217733598

  EPIC 217737844

  EPIC 217758726

  EPIC 217842557

  EPIC 217868242

  EPIC 217974025

  EPIC 218049597

  EPIC 218134652

  EPIC 218177728

  EPIC 218261839

  EPIC 218319020

  EPIC 218399334

  EPIC 218401573

  EPIC 218446991

  EPIC 218473148

  EPIC 218514623

  EPIC 218830488

  EPIC 218968242

  EPIC 219018921

  EPIC 219345887

  EPIC 219387459

  EPIC 219621717

  EPIC 219704987

  EPIC 229228156 - EPIC 229228162

  EPIC 229228166

  EPIC 229228167

  EPIC 229228168

  EPIC 229228173

  EPIC 229228180

  EPIC 229228182

  EPIC 229228183

  EPIC 229228186

  EPIC 229228187

  EPIC 229228191

  EPIC 229228199

  EPIC 229228200

  EPIC 229228204

  EPIC 229228210

  EPIC 229228212

  EPIC 229228213

  EPIC 229228228

  EPIC 229228231

  EPIC 229228235

  EPIC 229228239 - EPIC 229228244

  EPIC 229228245

  EPIC 229228246

  EPIC 229228248

  EPIC 229228249

  EPIC 229228250

  EPIC 229228252

  EPIC 229228256

  EPIC 229228263

  EPIC 229228272

  EPIC 229228273

  EPIC 229228274

  EPIC 229228278

  EPIC 229228280

  EPIC 229228282

  EPIC 229228284

  EPIC 229228287

  EPIC 229228289

  EPIC 229228290

  EPIC 229228291

  EPIC 229228294

  EPIC 229228297

  EPIC 229228298

  EPIC 229228301

  EPIC 229228302

  EPIC 229228305

  EPIC 229228371

  EPIC 229228372

  EPIC 229228373

  DSCT/GDOR

  EPIC 216477445 (D)

  EPIC 216715238 (D)

  EPIC 216858738 (G)

  EPIC 217065669 (D)

  EPIC 217218929 (D)

  EPIC 217856651 (G)

  EPIC 218505900 (D)

  EPIC 218587419 (G)

  EPIC 218759287 (D)

  EPIC 218807865 (D)

  EPIC 218933297 (G)

  EPIC 219110376 (D)

  EPIC 219044302 (D)

  EPIC 219128793 (D)

  EPIC 219185449 (D)

  EPIC 219188112 (D)

  EPIC 219236302 (G)

  EPIC 219335186 (G)

  EPIC 219457523 (G)

  EPIC 219590819 (D)

  other

  EPIC 215575259 LPV

  EPIC 215857222 LPV

  EPIC 215881928 P=1.837 days, delta_mag 0.553, strange, but very regular wave form, maybe Cepheid

  EPIC 217235287 P=1.2586 days, delta_mag 0.7, strange, but very regular wave form, maybe Cepheid

  EPIC 217450777 Asteroid crossing at BKJD 2477.68

  EPIC 217483971 LPV

  EPIC 217555432 LPV

  EPIC 218026301 Maybe short period Cepheid , P=1.445 days

  EPIC 218128117 Maybe short period Cepheid , P=2.119 days

  EPIC 218233155 LPV

  EPIC 218315918 LPV

  EPIC 218337072 Maybe short period Cepheid, P=3.9588 days

  EPIC 218432834 LPV

  EPIC 218456618 LPV

  EPIC 218498032 LPV

  EPIC 218704575 Inverse transits, period about 14.092 days.

  EPIC 218786464 LPV

  EPIC 219013435 LPV (Long period variable)

  EPIC 229228163 P=6.6 days, regular outbursts.

  Posted April 23, 2016 1:04 PM

• by Dolorous_Edd

  Ok, I am from the beginning

  PC

  EPIC 213546283 - 9.768d period

  EPIC 213778312 - maybe single dip 2488

  Possible glitch

  dip d2491

  EB candidates

  EPIC 213743957

  EPIC 213721740

  EPIC 213689594 - another dip 2397 likely glitch

  EPIC 213664903 - third object at 2497??

  EPIC 213655804

  EPIC 213610320

  EPIC 213604472

  EPIC 213601768

  EPIC 213601365

  EPIC 213599585

  EPIC 213589632 - period 1.709d , 15Re EB?

  EPIC 213131708 - 0.397d

  EPIC 213196496

  EPIC 213273052 - with third possible transit at 2491 glitch most likely

  EPIC 213332545 - single dip at 2505 bkjd and small one 2497

  EPIC 213338208

  EPIC 213354839

  EPIC 213370752

  EPIC 213455199 - two long dips

  EPIC 213462890

  EPIC 213481207 - single dip 2522

  EPIC 213515922

  EPIC 213518704

  EPIC 213522158

  EPIC 213523208

  EPIC 213549212

  EPIC 213550243

  EPIC 213551680

  EPIC 213563657

  RR_Lyr:

  EPIC 213770241

  EPIC 213768498

  EPIC 213765787

  EPIC 213765435 - maybe contaminated by one

  EPIC 213763846

  EPIC 213762930

  EPIC 213762930

  EPIC 213761780

  EPIC 213754558

  EPIC 213752222 - rrlyr or contaminated by one

  EPIC 213751700

  EPIC 213749152 - rrlyr or contaminated by one

  EPIC 213746714

  EPIC 213743266

  EPIC 213739512

  EPIC 213738939

  EPIC 213733092

  EPIC 213728721

  EPIC 213725035

  EPIC 213721962

  EPIC 213711202

  EPIC 213705835

  EPIC 213703651

  EPIC 213700397

  EPIC 213697550

  EPIC 213693576

  EPIC 213690286

  EPIC 213685287

  EPIC 213684249

  EPIC 213683363

  EPIC 213679334

  EPIC 213677234

  EPIC 213673071

  EPIC 213671810

  EPIC 213668715

  EPIC 213668378

  EPIC 213659171

  EPIC 213653006

  EPIC 213652775

  EPIC 213648803

  EPIC 213646984

  EPIC 213644113

  EPIC 213642585 - or contaminated by one

  EPIC 213619406

  EPIC 213609721

  EPIC 213606541

  EPIC 213596716

  EPIC 213593990

  EPIC 213587004

  EPIC 213586218

  EPIC 213063050 - look like backwards RRlyr

  EPIC 213070332

  EPIC 213090879

  EPIC 213176853

  EPIC 213181840

  EPIC 213240438

  EPIC 213297245

  EPIC 213426768

  EPIC 213440608

  EPIC 213456018

  EPIC 213472536

  EPIC 213480563

  EPIC 213488176 - dunno looks like one

  EPIC 213505037

  EPIC 213514736 - huh? gdor? rrlyr?

  EPIC 213517506

  EPIC 213519341

  EPIC 213534935

  EPIC 213548937

  EPIC 213548974

  EPIC 213555409

  EPIC 213557301

  EPIC 213562673

  EPIC 213563933

  EPIC 213572971

  EPIC 213573481

  EPIC 213577954

  GDOR

  EPIC 213752204

  EPIC 213613569

  EPIC 213541067

  EPIC 213461346

  EPIC 213291982

  EPIC 213426549

  EPIC 213572181

  Flares

  EPIC 213383300

  EPIC 213415045

  EPIC 213566127

  EPIC 213569356 - maybe something with 0.5d period

  EPIC 213596144 - maybe dip d2483

  Other:

  EPIC 213541921 - maybe rrlyr

  EPIC 213538824 - maybe dip 2496

  EPIC 213102725

  EPIC 213455126

  EPIC 213669594 - wierd lc

  Posted April 23, 2016 1:16 PM

• by ajamyajax

  Re 229228348 from Hans Martin's list: the 229 prefix targets I've checked are not listed as stars and are not in ExoFOP/CFOP2, so there are few details about them available except a RA/Dec (19 18 06.562, -16 20 35.12 here), and a KepMag value (17.60 here), and then some proposal information.

  This target is listed on "GO7035 Wright K2 survey of Ruprecht 147 - the oldest nearby star cluster" and there is a faint star at this location (of course it is with a KepMag of 17.60). But that's about all we have without doing more research. But thankfully with a number of transit repeats here, we can at least make a reasonable guess at the stellar parameters by the period and duration.

  So even accounting for some blended -- which is likely in a very busy field, a ~0.41 R_sol star could mean a possible hot gas giant planet candidate, as Hans Martin mentioned.

  [ Also 2MASS would be J191806562-16203512 ]

  s1=2468.923 p1=3.1376 d1=0.05792 (1.39 hours or more)

  au min-max 0.03 0.035
  
  stellar diameter in solar units min-max 0.35 0.465
  
  stellar mass in solar units min-max 0.365 0.58
  
  period in days min-max 3.14 3.141
  
  duration in hours min-max 1.304 1.485
  

  Semi-Major Axis a (A.U.) = 0.033
  
  Stellar diameter ratio = 0.41
  
  Stellar mass ratio = 0.4827
  
  Period ~= 3.137 days
  
  Duration ~= 1.3915 hours
  

  
  

  Posted April 23, 2016 7:01 PM

• by ajamyajax

  Re 213546283 from Ivan's list: looks like a good mini gas giant planet candidate with fairly consistent stellar parameters. I get a 0.87 R_sol estimate. And another busy field, but maybe that will be the case for much of C7. Also nearby 213539168 did not show any obvious transit contamination.

  s1=2469.357 p1=9.768 d1=0.147 (3.53 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213546283 , 2MASS J19173044-2902573 , 10.847 , 10.480 , 10.436 , 0.367 , 0.044 , ('G9V', 0.91) , ('A9V', 1.66)

  au min-max 0.075 0.095
  
  stellar diameter in solar units min-max 0.76 1.01
  
  stellar mass in solar units min-max 0.59 1.2
  
  period in days min-max 9.76 9.774
  
  duration in hours min-max 3.501 3.699
  

  Semi-Major Axis a (A.U.) = 0.086
  
  Stellar diameter ratio = 0.87
  
  Stellar mass ratio = 0.878
  
  Period ~= 9.762 days
  
  Duration ~= 3.5314 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213546283 289.3769 -29.0492 0.15 12.031 7
  
  213539168 289.3773 -29.0731 86.03 12.724 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213546283,2MASS J19173044-2902573,289.376853,-29.049206,5719.00,0.93,0.93,12.031,38.900,-32.000,
  

  Listed as TYC 6887-2075-1 -- Star on Simbad

  
  

  Posted April 23, 2016 7:04 PM

• by Dolorous_Edd

  PC

  EPIC 216494238 - 19.864

  EPIC 216468514 - maybe EB

  EPIC 216414930 - p3.615; 15RE

  EPIC 216359963 - maybe dip 2482

  EPIC 216334329 - period 28.063

  EPIC 216271111 - single dip 2546

  EPIC 216231580 - 3.9d ~17Re

  EPIC 216155756 - 9.102 period

  EPIC 215969174 - 16Re ; 4.175 period maybe eb after all

  EPIC 216116973 - possible HJ period 4.149

  EPIC 216050437 - maybe PC or EB p14.944. possible secondary 2538 bjd

  EPIC 216054524 - maybe dip at 2492 and 2532

  --

  EB:

  EPIC 216098906 - possible HB

  EPIC 216075815

  EPIC 216018037 - eb but dunno what is going on , depth is altering

  EPIC 215930676 - 80% drop mind you

  EPIC 214741009

  EPIC 214729274

  EPIC 214343851 - GDOR EB?

  EPIC 214239951

  EPIC 214229494

  EPIC 214219212

  EPIC 214208605

  EPIC 214197027

  EPIC 214196791

  EPIC 214145992

  EPIC 214121667 - same as 214121478?

  EPIC 214121478 - HB?

  EPIC 214115407

  EPIC 214107707

  EPIC 214078428

  EPIC 214066467

  EPIC 214064837

  EPIC 214034995

  EPIC 214030197

  EPIC 214024125

  EPIC 214016884

  EPIC 214001428 - maybe

  EPIC 213988451

  EPIC 213983690

  EPIC 213951550

  EPIC 213936662

  EPIC 213930666

  EPIC 213926179

  EPIC 213894431

  EPIC 213867148 - single big dip at 2533

  EPIC 213843283

  EPIC 213840781 - period 12.3 ; start 2477; 123Re

  EPIC 213809117 - EB with third object? i.e. 2526 bkjd

  EPIC 213795229

  ---

  RR Lyr

  EPIC 214238169

  EPIC 214233353

  EPIC 214204603

  EPIC 214188768

  EPIC 214173763

  EPIC 214162966

  EPIC 214160813

  EPIC 214159286

  EPIC 214139962

  EPIC 214139185

  EPIC 214136835

  EPIC 214132393

  EPIC 214093983

  EPIC 214091714

  EPIC 214088921

  EPIC 214088916

  EPIC 214079005

  EPIC 214063079

  EPIC 214051970

  EPIC 214050387

  EPIC 214049735

  EPIC 214044665

  EPIC 214029530

  EPIC 214026962

  EPIC 214024245

  EPIC 214022610

  EPIC 214021187

  EPIC 214017228

  EPIC 214012356

  EPIC 214009781

  EPIC 214009437

  EPIC 214006170

  EPIC 213999084

  EPIC 213998566

  EPIC 213987281

  EPIC 213979337

  EPIC 213963668

  EPIC 213959263

  EPIC 213951874

  EPIC 213949310

  EPIC 213946542

  EPIC 213943742

  EPIC 213943110

  EPIC 213937117

  EPIC 213934061

  EPIC 213905058

  EPIC 213901065

  EPIC 213881481

  EPIC 213873536

  EPIC 213869830

  EPIC 213865068

  EPIC 213858001

  EPIC 213857562

  EPIC 213853591

  EPIC 213848987

  EPIC 213844229

  EPIC 213840425

  EPIC 213838461

  EPIC 213836441

  EPIC 213836044

  EPIC 213832800

  EPIC 213830422 - maybe contaminated by one

  EPIC 213830059

  EPIC 213829146

  EPIC 213826072

  EPIC 213821684

  EPIC 213820374

  EPIC 213808081

  EPIC 213799940

  EPIC 213798941

  EPIC 213792360

  EPIC 213787069

  EPIC 213780654

  EPIC 213779703

  EPIC 213796278

  EPIC 213797898

  ---

  GDOR

  EPIC 214147122

  EPIC 214008881

  EPIC 213814597

  EPIC 213879374

  Other

  EPIC 213815764 - maybe single dip 2497

  EPIC 213817056 - maybe PC, 2492 ; period ~17d

  EPIC 213988451 - pulsating, but 2 dips ; 2478.6 and 2529

  EPIC 214133870 - many dips likely glitches

  EPIC 214179724 - dip 2517

  EPIC 214196024 - maybe something with 0.9d period

  EPIC 214208328 - maybe eb

  EPIC 214539533 - Looks like CV

  EPIC 214576668 - period 0.396, shallow depth PC or EB

  EPIC 216065247 - mira type star

  EPIC 216129500 - huge dip at the end

  EPIC 216142840 - processing glitch?

  EPIC 216572410 - 2491 strange rise ; glitch area I don't trust it

  Posted April 23, 2016 7:27 PM

• by JKD

  EB Candidates

  EPIC 213332545, S1 =2497.57 BKJD, Duration ~1.96 hrs, Depth ~16357 ppm, S2 =2505.59 BKJD, Duration ~4.41 hrs, Depth ~108103 ppm

  EPIC 213455199, S1 at 2540.06 BKJD, Duration ~34,32 hrs, Depth ~461348 ppm, S2 at 2548.91 BKJD, Duration ~33.83 hrs, Depth ~506573 ppm

  EPIC 213664903 supporting ED’s comment on a third object at 2497.57 BKJD, Duration ~1.47 hrs, Depth ~11700 ppm

  EPIC 213689594 another signal at 2497.56 BKJD, Duration ~1.96 hrs, Depth ~2100 ppm (maybe contamination or more likely a glitch, because its also visible in EPIC 213777861)

  EPIC 213832800 - S1 at 2488.45 BKJD, Duration ~8.33 hrs, Depth ~10%; S2 at 2543,08 BKJD, Duration ~6.86 Hrs, Depth ~0.4%

  EPIC 213840781 - maybe an EB with p ~24.7 d

  EPIC 213867148 - supporting ED’s comment as a potential EB, only one very wide signal visible, S at 2533.8 BKJD, Duration ~97 Hrs, Depth ~0.8%

  Posted April 23, 2016 9:13 PM

• by JKD

  PC Candidates

  EPIC 213357943, S1 =2497.56 BKJD, Duration ~1.96 hrs, Depth ~42329 ppm

  EPIC 214652580 maybe a PC with P ~8.9 d, Duration ~4.9 hrs, Depth ~2%, RE ~19.9 (also already marked as a pot EB)

  EPIC 214741009 likely a PC with P ~7.26 d, Duration ~2.45 hrs, Depth ~0.8%

  EPIC 214875552 S at 2519.59 BKJD, Duration ~2.45 hrs, Depth ~0.5% (20160430)

  Posted April 23, 2016 9:25 PM

• by Dolorous_Edd

  Guess what? Even more EBs and RR lyr's , hurray!

  Maybe PC

  EPIC 213187365 - single dip at 2491

  Possible PCs

  EPIC 216329749 - dunno maybe PC ; start at 2509; star 4.187

  EPIC 215847965 - possible PC? period 1.762; start 2469.8

  EPIC 214408246 - hard to say, maybe dip at 2486

  EPIC 214888033 - period ~7d; ~72Re est

  EPIC 215234145 - ~1% drop; 42Re estim. ; 1.2d period

  EPIC 215256917 - maybe dip at 2499

  EPIC 215358983 - 2% drop maybe eb's

  EPIC 215367799 - shallow depth, ~1d period

  EPIC 215389654 - 16Re estim; 23d period

  EPIC 215672017 - maybe dip at 2487.4 and period ~29.8d

  EPIC 215754710 - dip at 2508; period 6.624 maybe

  EPIC 215969174 - period 4.171d; eb most likely

  ---

  EB

  EPIC 216316812

  EPIC 216313062

  EPIC 216306336 - 50% drop

  EPIC 216272929

  EPIC 216257613

  EPIC 216254956

  EPIC 216241789 - maybe HB

  EPIC 216232932

  EPIC 216232183

  EPIC 216115076

  EPIC 216017588

  EPIC 215977694

  EPIC 215954155

  EPIC 215947143

  EPIC 215885413

  EPIC 215854473

  EPIC 215845163

  EPIC 215843342

  EPIC 215826635

  EPIC 215825200

  EPIC 215822538

  EPIC 215816368

  EPIC 215807414

  EPIC 215786841

  EPIC 215756523 - maybe transit at the end of LC

  EPIC 215746168 - 80% drop

  EPIC 215739094 - U-shaped; 32Re ; ~2-3% drop

  EPIC 215736925 - EB?

  EPIC 215716837 - D ; 20Re

  EPIC 215716548

  EPIC 215714765

  EPIC 215669570

  EPIC 215645072

  EPIC 215563359

  EPIC 215626177 - EB most likely; shallow depth 2d period

  EPIC 215553038

  EPIC 215501561

  EPIC 215482388 - HB

  EPIC 215475853

  EPIC 215475414

  EPIC 215474548 - shallow depth, ~1.209d period

  EPIC 215428655

  EPIC 215406822

  EPIC 215358813

  EPIC 215365782 - Again 80% drop

  EPIC 215353525

  EPIC 215343128

  EPIC 215307988

  EPIC 215279174

  EPIC 215253087

  EPIC 215241491 - 0.629 d period

  EPIC 215238948

  EPIC 215224181

  EPIC 215207652

  EPIC 215204996

  EPIC 215116629

  EPIC 215149130

  EPIC 215133422

  EPIC 215101303 - D

  EPIC 215086838

  EPIC 215086214

  EPIC 215067200 - nice long drop

  EPIC 215060072

  EPIC 215037076

  EPIC 215020856

  EPIC 214961418

  EPIC 214959581

  EPIC 214958958

  EPIC 214954235

  EPIC 214898046

  EPIC 214895832

  EPIC 214770974

  EPIC 214860030

  EPIC 214753294

  EPIC 214730936

  EPIC 214710365

  EPIC 214703698 - maybe 1d period

  EPIC 214702893

  EPIC 214702893

  EPIC 214690805

  EPIC 214685721

  EPIC 214676329

  EPIC 214675496

  EPIC 214673594

  EPIC 214657628 - maybe HB

  EPIC 214657222

  EPIC 214652580

  EPIC 214639958

  EPIC 214613289

  EPIC 214611894

  EPIC 214609225

  EPIC 214608706

  EPIC 214603975

  EPIC 214603920

  EPIC 214602901

  EPIC 214600459

  EPIC 214580155

  EPIC 214576668 - shallow depth, period 0.395

  EPIC 214573526

  EPIC 214559989

  EPIC 214548564

  EPIC 214541440

  EPIC 214537072

  EPIC 214512594

  EPIC 214509889

  EPIC 214439239 - altering depth

  EPIC 214417858

  EPIC 214366145

  EPIC 214335502

  EPIC 214299749

  EPIC 214249598 - well, maybe

  EPIC 214256183

  ---

  RR Lyr

  EPIC 215189451 - maybe contaminated by RR lyr

  EPIC 215092452

  EPIC 214636417

  EPIC 214635707

  EPIC 214620994

  EPIC 214591811

  EPIC 214586963

  EPIC 214561549

  EPIC 214559728

  EPIC 214554303

  EPIC 214543335

  EPIC 214540598

  EPIC 214536319

  EPIC 214528919

  EPIC 214527621 - maybe

  EPIC 214526418

  EPIC 214525180

  EPIC 214506212

  EPIC 214483828

  EPIC 214471010

  EPIC 214458054

  EPIC 214443883

  EPIC 214429467

  EPIC 214406455

  EPIC 214403114

  EPIC 214378052

  EPIC 214351555 - Maybe contaminated by one

  EPIC 214350124 - Maybe contaminated by one

  EPIC 214338814

  EPIC 214335745

  EPIC 214321580

  EPIC 214305662

  EPIC 214298393

  EPIC 214289719

  EPIC 214289002

  EPIC 214286233

  EPIC 214281812

  EPIC 214281479

  EPIC 214275983

  EPIC 214264770

  EPIC 214264769

  EPIC 214258372 - likely contaminated by one

  EPIC 214242811

  EPIC 214244591

  EPIC 214249241

  EPIC 214256837

  ---

  **GDOR /DSCT **

  EPIC 214561569

  EPIC 214245114 - maybe

  EPIC 214250802

  EPIC 214306290

  EPIC 214436324 - DSCT

  EPIC 214553583

  EPIC 214549434

  EPIC 214587047

  Other

  EPIC 214325145 - rise at 2487

  EPIC 214450179 - long dip at 2475

  EPIC 214459768 - dip at 2481

  EPIC 214514995 - maybe dip at 2546

  EPIC 214623776 - maybe dip at 2509

  EPIC 214651596 - maybe dip at 2492

  EPIC 215082803 - strange LC in shape of arc

  EPIC 214764920 - maybe Mira type

  EPIC 214835068 - maybe dip 2476

  EPIC 215080287 - dip at 2494

  EPIC 215144248 - LPV or Mira type?

  EPIC 215409200 - dip d2488.7d

  EPCI 215487620 - LPV or Mira type?

  EPIC 215533966 - maybe dip at 2485.6

  EPIC 215590205 - dip 2543.5

  EPIC 215761637 - maybe dip at 2498

  EPIC 215881928 - WTF?? is this? never seen such LC before

  EPIC 215894766 - maybe dip at 2501

  EPIC 215899602 - looks like DNA helix

  EPIC 215921457 - maybe dip at 2539

  EPIC 216005035 - looks like backwards RR lyr

  EPIC 216385027 - dip at 2546

  EPIC 216405287 - dip at 2495

  EPIC 216414229 - dip 2509

  Posted April 24, 2016 9:01 PM

• by ajamyajax

  Re 213809117 from Ivan's list: regarding an EB with a third object, I think this could be an issue with the corrective software because these added events appear around 2516-2517 and continue to the end of the LC. This is about the same region that extra K2 jitters in C7 start and with about the same interval too (see link below, Figure C7-RollDrift and Figure C7-MAR).

  Also these really aren't visible in my MC data as shown (not better, just closer to the original pdc data). And I should mention these events aren't periodic as shown either, that is just my transit software's adjustment for possible TTV data.

  Of course it would be great if this not a glitch and there are one or more additional objects here.. We should check this LC again in others corrective data (when available) and maybe that will help prove one case or the other.

  s1=2469.41 p1=1.43979 d1=0.22 (5.28 hours)
  
  s2=2470.13 p2=1.43979 d2=0.22 (5.28 hours)
  

  ttv3 = [2515.90,2517.35,2518.78,2520.30,2521.63,2523.099,2524.58,2525.94,2527.39,2528.88,2530.22,2531.755,2533.15,2534.68,2535.98,2537.50,2538.95,2540.39,2541.84,2543.19,2544.75,2546.22,2547.65,2548.89]
  
  ttv4 = [2516.65,2518.09,2519.53,2520.97,2522.42,2523.84,2525.31,2526.60,2528.03,2529.47,2530.94,2532.43,2534.02,2535.49,2536.82,2538.10,2539.66,2541.12,2542.51,2544.03,2545.48,2546.895,2548.33,2549.62]
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213809117 , 2MASS J19320314-2812447 , 7.476 , 7.495 , 7.498 , -0.019 , -0.003 , ('A1V', 2.2) , ('B8V', 3.4)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213809117 293.0131 -28.2124 0.17 8.248 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213809117,2MASS J19320314-2812447,293.013110,-28.212447,6554.00,3.35,1.92,8.248,-0.500,-11.000,
  

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.01 Variable V5572 Sgr -- 19 32 03.10 -28 12 45.0 Sgr EA 1.43979 7.60 - 7.95 V
  

  From Simbad:

  Listed as V* V5572 Sgr -- Eclipsing binary of Algol type (detached), Proper motions mas/yr: -0.5 -11.0, Spectral type: B8V

  http://keplerscience.arc.nasa.gov/k2-data-release-notes.html#k2-campaign-7

  
  

  Posted April 24, 2016 11:49 PM

• by ajamyajax

  Re 219388192 from Hans Martin's list: looks pretty convincing as an inflated hot Jupiter planet candidate. Another busy field of stars, so tried to allow for some dilution that could reduce the transit duration. Will clean up the plot with more corrected data and check the alternating fit again then also.

  s1=2470.99 p1=5.2928 d1=0.15 (3.6 hours or less)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219388192 , 2MASS J19173402-1652177 , 11.073 , 10.734 , 10.666 , 0.339 , 0.068 , ('G6V', 0.97) , ('G0V', 1.09)

  au min-max 0.055 0.07
  
  stellar diameter in solar units min-max 1.025 1.375
  
  stellar mass in solar units min-max 0.79 1.635
  
  period in days min-max 5.284 5.302
  
  duration in hours min-max 3.504 3.699
  

  Semi-Major Axis a (A.U.) = 0.061
  
  Stellar diameter ratio = 1.17
  
  Stellar mass ratio = 1.092
  
  Period ~= 5.292 days
  
  Duration ~= 3.6008 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219388192 289.3918 -16.8716 0.04 12.336 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219388192,2MASS J19173402-1652177,289.391806,-16.871611,5885.00,1.17,1.04,12.336,-1.200,-21.600,
  

  

  Posted April 24, 2016 11:53 PM

• by ajamyajax

  Re 213589632 from Ivan's list: and as mentioned by Ivan, this one seems to be stellar. My guess is a 0.85-0.95 M_sol primary and a much smaller companion.

  And not shown but I think it is interesting that the transit does not align exactly with the flux cycle but is a bit later in time, which could support this idea: not synchronized and less influence on the primary is visible in the changes in brightness. And with that there is a chance for a HJ also, but maybe only if the star is smaller than estimates here.

  s1=2469.682 p1=1.70895 d1=0.10375 (2.49 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213589632 , 2MASS J19161817-2854168 , 12.806 , 12.371 , 12.280 , 0.435 , 0.091 , ('K3V', 0.81) , ('K0V', 0.89)

  au min-max 0.03 0.03
  
  stellar diameter in solar units min-max 1.175 1.28
  
  stellar mass in solar units min-max 1.22 1.245
  
  period in days min-max 1.701 1.718
  
  duration in hours min-max 2.39 2.589
  

  Semi-Major Axis a (A.U.) = 0.03
  
  Stellar diameter ratio = 1.23
  
  Stellar mass ratio = 1.235
  
  Period ~= 1.708 days
  
  Duration ~= 2.4922 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213589632 289.0757 -28.9047 0.13 14.162 7
  
  213590120 289.0561 -28.9030 62.19 16.373 7
  
  213591325 289.1143 -28.8993 123.07 13.878 7
  
  213600477 289.0898 -28.8691 135.58 13.554 7
  
  213600378 289.0537 -28.8694 144.81 13.345 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213589632,2MASS J19161817-2854168,289.075739,-28.904693,5355.00,0.92,0.91,14.162,7.800,-9.300,
  

  

  Posted April 26, 2016 1:35 PM

• by Dolorous_Edd

  EPIC 214258372

  Looks like it could be contaminated by RR lyr

  Listed under GO7086 Discovery and Vetting of K2 Exoplanets

  Looks like star with spots, but the other signal with ~0.6d period doesn't look like it belong to the star

  Checked VSX, no known RR lyr nearby

  

  Posted April 26, 2016 7:26 PM

• by ajamyajax in response to Dolorous_Edd's comment.

  Seems like we could have plenty of that in this campaign, looking toward the galactic center and all:
  http://keplerscience.arc.nasa.gov/K2/Fields.shtml

  I hope to see a few high proper motion stars too just for a thrill or a reminder that the supermassive black hole at the center of our galaxy is in this direction also. Although Kepler probably can't see stars at ~8000 parsecs, even if there weren't billions of other stars in the way.

  https://en.wikipedia.org/wiki/Sagittarius_A*

  Right ascension 17h 45m 40.0409s, Declination −29° 0′ 28.118″, Distance 7,940 ± 420 pc
  
  (2MASS J17454004-2900281)

  Posted April 26, 2016 11:08 PM

• by ajamyajax

  Re 219069169 from Han Martin's list: yes a heartbeat feature as HM mentioned and other stellar characteristics suggest a binary here. And a bright target at 9.592 KepMag, too. The stellar estimates vary quite a bit as they often do in binary configurations.

  And in at least the heartbeat study mentioned below, A- or F-type primary component stars were prevalent as we seem to have in this system.

  s1=2482.42 p1=14.132 d1=0.145 (3.48 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219069169 , 2MASS J19001309-1735357 , 8.658 , 8.580 , 8.536 , 0.078 , 0.044 , ('A8V', 1.67) , ('A9V', 1.66)

  au min-max 0.11 0.115
  
  stellar diameter in solar units min-max 0.74 0.815
  
  stellar mass in solar units min-max 0.89 1.015
  
  period in days min-max 14.125 14.139
  
  duration in hours min-max 3.382 3.566
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219069169 285.0546 -17.5933 0.12 9.592 7
  
  219069315 285.0715 -17.5930 58.11 12.600 7
  
  219054413 285.0550 -17.6255 115.97 12.678 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219069169,2MASS J19001309-1735357,285.054568,-17.593288,6270.00,3.29,1.81,9.592,5.300,2.700,
  

  Listed as HD 176291 -- Star on Simbad, Proper motions mas/yr: 5.3 2.7, Spectral type: B9IV, 19 00 13.0919 -17 35 35.815

  "HEARTBEAT STARS: SPECTROSCOPIC ORBITAL SOLUTIONS FOR SIX ECCENTRIC BINARY SYSTEMS"
  
  http://arxiv.org/pdf/1506.06196v1.pdf

  And this could be related as well, possibly demonstrating a higher chance of less stable atmospheres in these types of stars:

  "Differential rotation in K, G, F and A stars"
  
  http://arxiv.org/pdf/1604.07003v1.pdf

  

  Also noting there is a CV 7.27 arc minutes away per VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  7.27 Variable [PK2008] J190039.83-173205.5 -- 19 00 39.83 -17 32 05.5 Sgr CV: -- 16.8 - ? R

  Posted April 27, 2016 1:48 PM

• by ajamyajax

  Re 216494238 from Ivan's list: and a decent chance for a Jupiter class planet candidate around a subgiant star. The data quality could be better but another one to look at later with more corrected data. The period and duration observed are consistent with a 1.82 R_sol estimate, but both could be slightly larger with some (probably) typical C7 blending. Edit: although differences in mass estimates are a bit of a binary concern, where a combined mass with a small stellar companion could be showing in the duration-based calculation.

  s1=2474.61 p1=19.882 d1=0.315 (7.56 hours or more)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216494238 , 2MASS J19262288-2214514 , 11.141 , 10.854 , 10.765 , 0.287 , 0.089 , ('G1V', 1.07) , ('G9V', 0.91)

  au min-max 0.165 0.175
  
  stellar diameter in solar units min-max 1.74 1.85
  
  stellar mass in solar units min-max 1.515 1.81
  
  period in days min-max 19.875 19.889
  
  duration in hours min-max 7.465 7.658
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216494238 291.5953 -22.2477 0.19 12.302 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216494238,2MASS J19262288-2214514,291.595341,-22.247662,5993.00,1.82,1.25,12.302,7.700,-13.000,
  

  

  Posted April 27, 2016 1:52 PM

• by ajamyajax

  Re 218864897 from Hans Martin's list: this target is probably a slightly eccentric binary. Also note the transit eclipses are aligned with the flux cycle minima which helps that cause.

  s1=2474.86 p1=8.871 d1=0.25 (6.0 hours)
  
  s2=2470.673 p2=8.871 d2=0.25 (6.0 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218864897 , 2MASS J18502159-1800232 , 11.487 , 11.232 , 11.082 , 0.255 , 0.15 , ('F9V', 1.14) , ('K5V', 0.75)

  au min-max 0.095 0.095
  
  stellar diameter in solar units min-max 1.78 1.835
  
  stellar mass in solar units min-max 1.455 1.455
  
  period in days min-max 8.866 8.866
  
  duration in hours min-max 5.913 6.096
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218864897 282.5900 -18.0065 0.10 12.783 7
  
  218856959 282.5740 -18.0218 77.77 12.461 7
  
  218865279 282.6171 -18.0057 92.79 14.487 7
  
  218859202 282.5653 -18.0175 93.44 11.916 7
  
  218851295 282.5731 -18.0327 110.75 11.864 7
  
  218881993 282.6008 -17.9747 120.20 13.045 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218864897,2MASS J18502159-1800232,282.590009,-18.006473,6222.00,2.42,1.58,12.783,3.400,-6.700,
  

  

  Posted April 28, 2016 1:28 AM

• by ajamyajax

  Re 216468514 from Ivan's list: mentioned as a possible EB, but an inflated HJ planet candidate looks more favorable. But another one where the observed duration seems blended and maybe less than it should be. 1.4x R_sol seems to work however. MC data used for this fit.

  s1=2471.522 p1=3.3142 d1=0.13125 (3.15 hours or more)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216468514 , 2MASS J18595649-2217363 , 11.564 , 11.257 , 11.210 , 0.307 , 0.047 , ('G4V', 0.99) , ('F0V', 1.58)

  au min-max 0.045 0.05
  
  stellar diameter in solar units min-max 1.335 1.57
  
  stellar mass in solar units min-max 1.1 1.525
  
  period in days min-max 3.307 3.324
  
  duration in hours min-max 3.501 3.699
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216468514 284.9854 -22.2934 0.07 12.749 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216468514,2MASS J18595649-2217363,284.985378,-22.293402,5948.00,1.46,1.13,12.749,-8.700,-2.100,
  

  
  

  Posted April 28, 2016 1:30 AM

• by Dolorous_Edd

  pictures time! although they are all look the same, target star with hell of a lot of stars around

  EPIC 216468514

  CFHT G-band

  

  Posted April 28, 2016 12:56 PM

• by Dolorous_Edd

  EPIC 229228348 from Hans Martin's list and ajamyajax mention

  CFHT G-band

  

  Posted April 28, 2016 9:04 PM

• by ajamyajax in response to Dolorous_Edd's comment.

  Looking like they are all going to be like this. Do you know if we can at least get some proper motions of the nearby 2MASS stars?

  Posted April 28, 2016 11:49 PM

• by ajamyajax

  Re 213664903 from Ivan's and JKD's list and a third object at 2497: that transit-looking feature is only in the MAST data. So my guess is even if blended the duration seems like it might be too short for a third object, and we should be able to see similar transit repeats.

  s1=2469.612 p1=6.531 d1=0.552 (13.25 hours +/-)
  
  s2=2472.865 p2=6.531 d2=0.552 (13.25 hours +/-)
  

  s3=2497.57 p3=? d3=0.06 (1.44 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213664903 , 2MASS J19060918-2839337 , 11.726 , 11.110 , 10.967 , 0.616 , 0.143 , ('K6V', 0.7) , ('K5V', 0.75)

  Semi-Major Axis a (A.U.) = 0.02
  
  Stellar diameter ratio = 0.64
  
  Stellar mass ratio = 0.68
  
  Period ~= 1.291 days
  
  Duration ~= 1.4411 hours
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213664903,2MASS J19060918-2839337,286.538297,-28.659392,4711.00,0.64,0.68,13.141,-34.800,56.700,

  Posted April 28, 2016 11:50 PM

• by ajamyajax

  Re 218711655 from Hans Martin's list: appears to be a blended binary. MAST data used for this fit.

  s1=2469.59 p1=1.1577 d1=0.075833 (1.82 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218711655 , 2MASS J19015453-1817540 , 10.149 , 9.920 , 9.853 , 0.229 , 0.067 , ('F8V', 1.18) , ('G0V', 1.09)

  au min-max 0.02 0.02
  
  stellar diameter in solar units min-max 0.83 0.935
  
  stellar mass in solar units min-max 0.785 0.81
  
  period in days min-max 1.148 1.166
  
  duration in hours min-max 1.721 1.919
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218711655 285.4772 -18.2984 0.16 11.334 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218711655,2MASS J19015453-1817540,285.477175,-18.298364,6160.00,1.51,1.23,11.334,-16.900,-19.300,

  Listed as TYC 6286-2288-1 -- Star on Simbad

  

  Posted April 28, 2016 11:51 PM

• by ajamyajax

  Re EPIC216414930 and EPIC218131080 are in this paper:

  HATS-11b and HATS-12b: Two transiting Hot Jupiters orbiting sub-solar metallicity stars selected for the K2 Campaign 7
  
  http://arxiv.org/abs/1603.02894

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216414930 , 2MASS J19173618-2223236 , 12.647 , 12.315 , 12.243 , 0.332 , 0.072 , ('G6V', 0.97) , ('G1V', 1.07)
  
  218131080 , 2MASS J19164857-1921212 , 11.725 , 11.507 , 11.391 , 0.218 , 0.116 , ('F7V', 1.21) , ('K3V', 0.81)

  epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
  
  216414930,6164.00,1.18,0.87,12.243,4.500,-21.500,742.10
  
  218131080,6790.00,1.71,1.48,11.391,6.200,5.200,796.10

  Update: these values are newer and looks like previous k2_dist distance values were removed, and for all the C7 targets I've looked at anyway:
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216414930,2MASS J19173618-2223236,289.400759,-22.389926,6164.00,1.18,0.87,13.737,4.500,-21.500,
  
  218131080,2MASS J19164857-1921212,289.202397,-19.355908,6790.00,1.71,1.48,12.700,6.200,5.200,

  Posted April 28, 2016 11:53 PM

• by Dolorous_Edd

  213664903 from Ivan's and JKD's list and a third object at 2497

  Is a glitch area, most likely , I have seen a few of them

  Looking like they are all going to be like this. Do you know if we can at least get some proper motions of the nearby 2MASS stars?

  Try USNO B1 catalog

  Posted April 28, 2016 11:54 PM

• by ajamyajax

  Also noting some duplicate 2MASS and color values in the C7 data:

  214677539 , 2MASS J19121180-2554212 , 9.581 , 9.399 , 9.243 , 0.182 , 0.156 , 'F5V'
  
  214677624 , 2MASS J19121180-2554212 , 9.581 , 9.399 , 9.243 , 0.182 , 0.156 , 'F5V'
  

  214121478 , 2MASS J19143954-2719145 , 7.959 , 7.943 , 7.933 , 0.016 , 0.01 , 'A3V'
  
  214121667 , 2MASS J19143954-2719145 , 7.959 , 7.943 , 7.933 , 0.016 , 0.01 , 'A3V'
  

  213919915 , 2MASS J19321887-2753040 , 8.211 , 7.902 , 7.830 , 0.309 , 0.072 , 'G4V'
  
  213920015 , 2MASS J19321887-2753040 , 8.211 , 7.902 , 7.830 , 0.309 , 0.072 , 'G4V'
  

  214881902 , 2MASS J19163910-2525289 , 8.890 , 8.705 , 8.698 , 0.185 , 0.007 , 'F5V'
  
  214882226 , 2MASS J19163910-2525289 , 8.890 , 8.705 , 8.698 , 0.185 , 0.007 , 'F5V'
  

  215632069 , 2MASS J18494929-2350101 , 6.222 , 5.655 , 5.370 , 0.567 , 0.285 , 'K6V'
  
  215632123 , 2MASS J18494929-2350101 , 6.222 , 5.655 , 5.370 , 0.567 , 0.285 , 'K6V'
  

  219039523 , 2MASS J19164074-1739261 , 7.918 , 7.662 , 7.612 , 0.256 , 0.05 , 'F9V'
  
  219039768 , 2MASS J19164074-1739261 , 7.918 , 7.662 , 7.612 , 0.256 , 0.05 , 'F9V'
  

  Posted April 28, 2016 11:55 PM

• by ajamyajax in response to Dolorous_Edd's comment.

  Try USNO B1 catalog

  Ok, thanks.

  Posted April 28, 2016 11:57 PM

• by ajamyajax

  Re 218709665 from Hans Martin's list: a fairly deep stellar-looking transit that would be ~18Re if a 1.1 R_sol star. And Huber/NEA have a larger radius giant or subgiant here. But looked and no sign of transit contamination in nearby EPICs. MAST data used for this fit.

  s1=2470.304 p1=1.9363 d1=0.097 (2.32 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218709665 , 2MASS J18472383-1818074 , 11.745 , 11.402 , 11.354 , 0.343 , 0.048 , ('G9V', 0.91) , ('F1V', 1.5)

  au min-max 0.03 0.035
  
  stellar diameter in solar units min-max 0.965 1.23
  
  stellar mass in solar units min-max 0.955 1.535
  
  period in days min-max 1.927 1.946
  
  duration in hours min-max 2.223 2.419
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218709665 281.8493 -18.3021 0.18 13.112 7
  
  218707586 281.8350 -18.3060 51.01 12.386 7
  
  218706313 281.8768 -18.3084 96.59 11.944 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218709665,2MASS J18472383-1818074,281.849337,-18.302065,5621.00,2.13,0.99,13.112,8.900,-1.800,
  

  

  Posted April 29, 2016 4:58 PM

• by ajamyajax

  Re 216334329 from Ivan's list: sparse data and only three transit events, but looks rather stellar. A wide range for the stellar estimates also. MAST data used for this fit as well.

  s1=2483.77 p1=28.073 d1=0.156 (3.744 hours or more)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216334329 , 2MASS J19121838-2232037 , 11.698 , 11.413 , 11.268 , 0.285 , 0.145 , ('G1V', 1.07) , ('K5V', 0.75)

  au min-max 0.155 0.165
  
  stellar diameter in solar units min-max 0.57 0.63
  
  stellar mass in solar units min-max 0.63 0.76
  
  period in days min-max 28.081 28.081
  
  duration in hours min-max 3.675 3.837
  

  From NEA, K2 Targets within search area
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216334329 288.0767 -22.5344 0.11 12.896
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216334329,2MASS J19121838-2232037,288.076670,-22.534388,5932.00,1.79,1.21,12.896,12.500,-1.500,

  

  Posted April 29, 2016 5:00 PM

• by arvintan

  Hey guys! Need any help? 😄 Seems like you've already gone through the whole list in just under a week.

  Posted April 29, 2016 5:07 PM

• by ajamyajax in response to arvintan's comment.

  Hi Arvin, good to see you again! And yes Hans Martin and Ivan are really good at finding K2 candidates of all types, and fast.. But of course there is always something more to find. Enjoy the search, I hope. mark

  Posted April 29, 2016 5:12 PM

• by arvintan in response to ajamyajax's comment.

  Nice to see you again as well, Mark! I missed working with you guys and gals. I regret not being able to tag along with Campaigns 4-6.

  Anyway, speaking of finding something more, check this one out. EPIC 219701147. I haven't checked if it's contaminated but seems to me it's behaving strangely. At first look it seems to be pulsating regularly but at closer look the pulsations seem to be varying from short to long to short. Max period is greatest at ~2488-2496 BJD. Is this something new or just common? Be kind to me guys. It's been months since I last looked at a lightcurve. Lol

  Posted April 29, 2016 6:21 PM

• by ajamyajax in response to arvintan's comment.

  Re 219701147: I've seen several of those and believe they are corrective software issues. Here is a look at my also somewhat ugly minimally corrected data of the same LC, and you will see what I think is a (short) periodic variable. Edit: could be a BY Draconis-type variable. Hope this helps.

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219701147 , 2MASS J19172359-1603471 , 11.436 , 11.005 , 10.853 , 0.431 , 0.152 , ('K1V', 0.86) , ('K6V', 0.7)

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219701147,2MASS J19172359-1603471,289.348327,-16.063105,5059.00,2.22,0.90,12.826,-9.900,-21.900,
  

  

  Posted April 29, 2016 7:09 PM

• by ajamyajax

  Re 218589724 from Hans Martin's list: this target looks like an eccentric binary. The shallow transit secondary helped me to constrain the period and duration in the MAST data somewhat. Also the different depths in the primary transit are a corrective software issue, I believe -- at a glance they look even in my MC data amidst the noise.

  s1=2473.73 p1=45.40 d1=0.40 (9.6 hours)
  
  s2=2499.12 p2=45.40 d2=0.40 (9.6 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218589724 , 2MASS J19065073-1831351 , 11.551 , 11.571 , 11.499 , -0.02 , 0.072 , ('A1V', 2.2) , ('G1V', 1.07)

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218589724,2MASS J19065073-1831351,286.711449,-18.526455,9384.00,2.08,2.23,11.965,5.100,-6.300,

  

  Posted April 29, 2016 7:12 PM

• by ajamyajax

  Re 216231580 from Ivan's list: and as Ivan noted, looks fairly large for a PC but could still be possible... 1.32 R_sol estimate for this fit which is a bit more than Huber/NEA, but this does allow for some blending. Any smaller radius would be even better for the PC chances of course. Will clean up the fit and re-visit with more corrected data.

  s1=2469.51 p1=3.907 d1=0.15 (3.6 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216231580 , 2MASS J19403768-2243179 , 13.493 , 13.185 , 13.091 , 0.308 , 0.094 , ('G4V', 0.99) , ('K2V', 0.85)

  au min-max 0.05 0.055
  
  stellar diameter in solar units min-max 1.26 1.465
  
  stellar mass in solar units min-max 1.09 1.46
  
  period in days min-max 3.899 3.912
  
  duration in hours min-max 3.5 3.697
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216231580 295.1570 -22.7217 0.04 14.771 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216231580,2MASS J19403768-2243179,295.157007,-22.721690,6004.00,1.23,1.04,14.771,1.900,-11.300,
  

  
  

  Also as seen on Simbad here:

  194.78 arcseconds from this target:
  
  HD 185535 -- High proper-motion Star, Proper motions mas/yr: -28.24 -189.38, Spectral type: G5V, 19 40 23.71266 -22 43 42.5397

  302.84 arcseconds from this target:
  
  2MASS J19401579-2243198 -- High proper-motion Star, Proper motions mas/yr: 6.659 -211.895, 19 40 15.792 -22 43 19.84

  And I hope these are at some distance, because they might suggest a large mass object of some type is near their location... But they are probably local is my guess -- without more research.

  Posted April 29, 2016 7:17 PM

• by JKD

  EPIC 214860030 - maybe a MPC or an EB with an 3rd object

  S1 at 2472.47 BKJD, P1 ~27.05 d, Duration ~8.82 hrs, Depth ~3.5%

  S2 at 2488.63 BKJD, P2 ~54.1 d, Duration ~7.84 hrs,, Depth ~18%

  S3 at 2515,70 BKJD, P3 ~??? d, Duration ~4.90 hrs, Depth ~????%

  Posted April 29, 2016 11:32 PM

• by ajebson

  Finally managed to update my tools so I can browse the light curves. Still pretty primitive, and not yet integrated with my catalogue code and stellar modelling stuff but slowly getting there 😃

  Just to prove it, here's the non-detrended, unfolded curve for 216231580 😉

  

  --- Tony

  Posted April 30, 2016 7:41 AM

• by zoo3hans in response to JKD's comment.

  Dear JKD

  EPIC 214860030 BKJD 2515.7 is just an uncomplete instance of the primary eclipse of this EB. We have:

  secondary: 2472.5, 2499.55, 2526.6

  primary: 2488.65, 2515.7, 2542.7

  Period of EB: P=27.05 days.

  Posted April 30, 2016 9:44 AM

• by ajamyajax in response to ajebson's comment.

  Tony, great to see your independent views and charts again also! Re 216231580 what do you think of the PC chances and/or do you see any different stellar parameters? This candidate is right on the PC or EB border in my view. (And yep, I do take all this seriously. 😃 )

  Posted April 30, 2016 3:19 PM

• by ajamyajax in response to zoo3hans's comment.

  Re 214860030 from JKD's and Ivan's lists: yes in support of HM's comment this looks like an eccentric binary, or is contamination from one since the coordinates are just 'near' several dim stars with a brighter star in the vicinity (could be error there, don't know). But as HM mentioned I also believe the middle primary transit event is shorter in depth than the others from a (you-guessed-it) another small corrective software issue. My MC data isn't any help here though; too messy this time. Also, this chart just to show the eccentric transit offsets.

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214860030 , 2MASS J19201211-2528345 , 14.195 , 13.596 , 13.286 , 0.599 , 0.31 , ('K5V', 0.75) , ('M4V', 0.24)

  au min-max 0.19 0.215
  
  stellar diameter in solar units min-max 1.355 1.575
  
  stellar mass in solar units min-max 1.25 1.81
  
  period in days min-max 27.056 27.069
  
  duration in hours min-max 6.868 7.057
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214860030 290.0505 -25.4763 0.15 16.598 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214860030,2MASS J19201211-2528345,290.050488,-25.476261,3848.00,0.36,0.40,16.598,,,

  

  Posted April 30, 2016 3:24 PM

• by arvintan

  Any ideas on what's going on with this one? EPIC 229228335

  Has fewer data points than your typical LCs and most of these points suggest bright events. I'm thinking this is a bad data set. Curious though how this one came to be.

  Posted April 30, 2016 5:47 PM

• by arvintan in response to zoo3hans's comment.

  EPIC 219515616

  Aside from it possibly being an EB, there could be something transiting at 2484.3-2485.3 BJD, about 20 hours long. Or it could just be an artifact of the pulsation.

  Posted April 30, 2016 6:08 PM

• by ajamyajax in response to arvintan's comment.

  Re 229228335: looks like an ordinary star, so this could be just another corrective software issue. Compare your LC with my MC data, which is also fubar I think. But what is happening are the 2516-and-on glitches I believe. I mean there is a chance this is a wild flare event, but the times are just too coincidental. See an earlier post for another possible glitch example like this (the third object in a binary post) and a bit more K2 satellite information. Also if you see any more weird-looking LC's, this cause is a good first guess I believe.

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  

  213484851 , 2MASS J19210057-2915357 , 12.682 , 12.273 , 12.148 , 0.409 , 0.125 , ('K2V', 0.85) , ('K3V', 0.81)

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213484851,2MASS J19210057-2915357,290.252357,-29.259914,5351.00,0.90,0.96,14.305,6.500,-2.400,
  

  

  Posted April 30, 2016 6:51 PM

• by zoo3hans in response to arvintan's comment.

  Dear Arvin

  yes, now that you mention it, I remember that I thought the same. Maybe it's indeed a real dip there. EPIC 219515616 , dip at BKJD 2484.3-2485.3 (marked in green in the graph below).

  

  Posted April 30, 2016 6:58 PM

• by ajamyajax in response to zoo3hans's comment.

  Re 219515616 and possible event ~ 2484.3: didn't see anything there myself. Maybe someone else will. My guess is just an artifact or a transit-like display seen only in your viewer.

  s1=2470.19 p1=4.434 d1=0.10 (2.4 hours)
  
  s2=2472.407 p2=4.434 d2=0.10 (2.4 hours)

  

  Posted May 1, 2016 1:23 PM

• by ajamyajax

  Re 218300572 from Hans Martin's list: using a 1.66 R_sol star radius from Huber/NEA, a grazing gas giant seems kind of possible here... But these eclipses are all at the flux minima plus the other stellar estimates I get vary, and there is a hint of a secondary maybe. So my guess is stellar. But another look with more corrected data later could help.

  s1=2468.587 p1=1.5901 d1=0.102 (2.45 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218300572 , 2MASS J18483825-1903038 , 10.788 , 10.494 , 10.409 , 0.294 , 0.085 , ('G2V', 1.0) , ('G8V', 0.94)

  au min-max 0.025 0.03
  
  stellar diameter in solar units min-max 1.035 1.355
  
  stellar mass in solar units min-max 0.815 1.44
  
  period in days min-max 1.582 1.599
  
  duration in hours min-max 2.351 2.547
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218300572 282.1594 -19.0511 0.20 11.919 7
  
  218300504 282.1998 -19.0512 137.56 12.587 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218300572,2MASS J18483825-1903038,282.159375,-19.051050,6137.00,1.66,1.22,11.919,0.500,3.800,
  

  From Simbad, 51.80 arcsecs away: HD 173916 -- Star, Proper motions mas/yr: 3.20 -0.60, Spectral type: A2V, 18 48 40.8535 -19 02 27.437

  

  Posted May 1, 2016 1:27 PM

• by ajamyajax

  Re 216155756 from Ivan's list: as Hans Martin mentioned the transits here indicate an eccentric binary. And not shown here, but they are very shallow so this LC is probably contaminated from another EB.

  s1=2469.70 p1=9.102 d1=0.15 (3.6 hours)
  
  s2=2475.16 p2=9.102 d2=0.15 (3.6 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216155756 , 2MASS J19150542-2251378 , 10.188 , 9.893 , 9.796 , 0.295 , 0.097 , ('G2V', 1.0) , ('K1V', 0.86)

  au min-max 0.075 0.09
  
  stellar diameter in solar units min-max 0.815 1.025
  
  stellar mass in solar units min-max 0.68 1.175
  
  period in days min-max 9.097 9.099
  
  duration in hours min-max 3.502 3.695
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216155756 288.7726 -22.8606 0.18 11.306 7
  
  216164553 288.7502 -22.8446 93.87 17.265 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216155756,2MASS J19150542-2251378,288.772584,-22.860552,5931.00,1.89,1.18,11.306,1.800,-20.300,
  

  Listed as TYC 6874-221-1 -- Star on Simbad.

  Posted May 1, 2016 1:28 PM

• by zoo3hans in response to ajamyajax's comment.

  Dear Mark

  I added a graph of the LC portion in question to clarify somewhat the sitiuation. We speak of the green part of the LC.

  Yours, Hans Martin

  Posted May 1, 2016 4:24 PM

• by arvintan in response to zoo3hans's comment.

  From Han's EPIC 219420915, I got similar period and duration. Here's an attempt at phase folding this one. V-shape makes me think of possible contamination or stellar nature.
  

  Posted May 1, 2016 6:17 PM

• by ajamyajax in response to zoo3hans's comment.

  Ok HM, I see what you both saw now. The Huber/NEA giant star values below and a duration of 24 hours would produce a short period estimate for this object however (even if binary masses were combined; tested this calc with several circumbinary systems and worked ok there). But other scenarios might work better.

  Semi-Major Axis a (A.U.) = 0.025
  
  Stellar diameter ratio = 11.24
  
  Stellar mass ratio = 0.94
  
  Period ~= 1.525 days
  
  Duration ~= 24.0194 hours
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219515616 , 2MASS J19164132-1633323 , 12.978 , 12.291 , 12.152 , 0.687 , 0.139 , ('M8V', 0.082) , ('K5V', 0.75)

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219515616,2MASS J19164132-1633323,289.172207,-16.559070,4437.00,11.24,0.94,15.123,-0.200,-27.000,

  Posted May 1, 2016 6:47 PM

• by ajamyajax

  Re 218210199 from Hans Martin's list: another V-shaped fit in a blended background that is on the border object-wise, in my opinion. With the Huber/NEA value of 1.44 R_sol my radius estimate is around 16.36Re. But there are other possible transit(s) which would definitely help the PC cause. Will look again with more corrected data.

  s1=2468.57 p1=1.9864 d1=0.095 (2.28 hours or more)
  
  s2=2471.59 p2=9.927 d2=0.15 (3.6 hours or more)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218210199 , 2MASS J19125150-1912473 , 12.720 , 12.410 , 12.314 , 0.31 , 0.096 , ('G6V', 0.97) , ('K1V', 0.86)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218210199 288.2146 -19.2132 0.12 13.848 7
  
  218197771 288.1837 -19.2355 132.29 8.085 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218210199,2MASS J19125150-1912473,288.214607,-19.213167,6178.00,1.44,1.16,13.848,1.900,-4.100,
  

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  1.02 Variable ASAS J191253-1911.8 -- 19 12 53.12 -19 11 50.5 Sgr MISC 45.833332 13.14 (0.29) V

  From Simbad, 132.38 arcsecs from this target:
  HD 179266 -- Star, Proper motions mas/yr: -120.56 -124.51, Spectral type: G0V

  

  Posted May 1, 2016 6:51 PM

• by ajamyajax

  Re 215969174 from Ivan's list: and yes another candidate that could be a PC or an EB primary. Although maybe more of a binary chance here with a MAST data odd even plot showing a possible offset. But still a PC chance. Also MC data for these fits because more even on average. And 1.35 R_sol for this radius estimate.

  s1=2468.938 p1=4.175 d1=0.14 (3.36 hours or more)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215969174 , 2MASS J19255488-2312100 , 13.181 , 12.855 , 12.809 , 0.326 , 0.046 , ('G8V', 0.94) , ('F0V', 1.58)

  au min-max 0.05 0.06
  
  stellar diameter in solar units min-max 1.1 1.395
  
  stellar mass in solar units min-max 0.955 1.66
  
  period in days min-max 4.166 4.181
  
  duration in hours min-max 3.264 3.458
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215969174 291.4787 -23.2028 0.05 14.300 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215969174,2MASS J19255488-2312100,291.478687,-23.202793,6165.00,1.35,1.07,14.300,-1.500,-7.500,
  

  
  

  Posted May 1, 2016 6:53 PM

• by ajebson in response to ajamyajax's comment.

  On EPIC 216231580, I've now got my code working for estimating stellar parameters:

  

  Ignoring the "giant" row (which needs to use a different stellar model that I haven't written yet 😉 ), it looks like a late G class ...

  Note: I've assumed the metallicity of -0.1, which I think is okay for the solar neighbourhood. A bigger problem is I haven't corrected for extinction (need an API to get it from the web for a particular RA/Dec)

  I haven't looked at the transits yet, as I'm focussing on getting the stellar parameter estimation going first (next up is doing an MCMC fit to the Dartmouth isochrones).

  --- Tony

  Posted May 2, 2016 10:08 AM

• by ajamyajax in response to ajebson's comment.

  Very nice compilation. Late G (0.94-0.96 M_Sol) would be in line with the colors estimates I get for 216231580 also, and near the Huber/NEA value of 1.04. I hope your radius values are closer than mine of 1.32 or Huber/NEA at 1.23 also, because that would definitely help the Jupiter cause. And I look forward to seeing your next coding results already. 😃

  Posted May 2, 2016 12:49 PM

• by ajamyajax

  Re 216116973 from Ivan's list and HM's mention: yes hopes for a nice HJ candidate here also, but there appears to be a significant secondary at the half period. Seems a bit deep for an albedo effect eclipse from a luminous planet, but guess we'll have to wait and see.

  s1=2468.80 p1=4.1395 d1=0.13 (3.12 hours)
  
  s2=2470.87 p2=4.1395 d2=0.13 (3.12 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216116973 , 2MASS J19023359-2255510 , 10.820 , 10.507 , 10.403 , 0.313 , 0.104 , ('G6V', 0.97) , ('K2V', 0.85)

  au min-max 0.045 0.055
  
  stellar diameter in solar units min-max 0.925 1.2
  
  stellar mass in solar units min-max 0.71 1.3
  
  period in days min-max 4.132 4.148
  
  duration in hours min-max 3.022 3.217
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216116973 285.6400 -22.9309 0.15 12.092 7
  
  216107143 285.6384 -22.9488 64.79 14.096 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216116973,2MASS J19023359-2255510,285.639981,-22.930863,5760.00,1.31,1.09,12.092,-16.000,-12.800,
  

  

  Posted May 2, 2016 12:55 PM

• by ajamyajax

  Re 217671466 from Hans Martin's list: and this target confirmed as HATS-9 b, but the good news is my radius estimates for this planet (and Huber/NEA's) look too large -- like some other Jupiter class candidates here perhaps. So will work at dialing some of those down in future estimates if the colors suggest a smaller star.

  EPIC 217671466 is confirmed planet HATS-9 b, P=1.9153073, D=0.1457 days/3.497 hrs, 1.065 R_Jup, 11.94Re -- 1.503 R_Sol, 1.03 M_sol
  
  http://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=HATS-9+b&type=CONFIRMED_PLANET

  s1=2469.174 p1=1.9154 d1=0.143 (3.43 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217671466 , 2MASS J19231442-2009587 , 11.885 , 11.558 , 11.479 , 0.327 , 0.079 , ('G6V', 0.97) , ('G6V', 0.97)

  au min-max 0.035 0.035
  
  stellar diameter in solar units min-max 1.705 1.82
  
  stellar mass in solar units min-max 1.545 1.575
  
  period in days min-max 1.906 1.924
  
  duration in hours min-max 3.331 3.529
  

  Semi-Major Axis a (A.U.) = 0.035
  
  Stellar diameter ratio = 1.76
  
  Stellar mass ratio = 1.55
  
  Period ~= 1.913 days
  
  Duration ~= 3.4332 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217671466 290.8101 -20.1663 0.06 13.095 7
  
  217651782 290.8142 -20.2008 124.91 11.886 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217671466,2MASS J19231442-2009587,290.810104,-20.166317,5897.00,1.92,1.17,13.095,0.300,-1.900,
  

  
  

  Posted May 2, 2016 1:00 PM

• by ajebson in response to ajamyajax's comment.

  When I correct for extinction, I think 216231580 will become a bit earlier ... so it might be ~1.04 but I'd be surprised if it was much earlier than that. I've got my API for getting extinction data working (from NASA/IPAC ), so just need to update the UI to show the results. Hopefully on Weds/Thurs.

  --- Tony

  Posted May 3, 2016 9:23 AM

• by ajamyajax in response to ajebson's comment.

  All right, and thanks for the link. Probably well after you before I am using this data though.

  Posted May 3, 2016 8:09 PM

• by ajamyajax

  Re 216050437 from Ivan's list: sparse data but appears to be a BGEB. Will keep trying. 😃

  s1=2475.25 p1=14.942 d1=0.15 (3.6 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216050437 , 2MASS J19342785-2303105 , 11.238 , 10.996 , 10.891 , 0.242 , 0.105 , ('F9V', 1.14) , ('K2V', 0.85)

  au min-max 0.11 0.11
  
  stellar diameter in solar units min-max 0.725 0.765
  
  stellar mass in solar units min-max 0.795 0.795
  
  period in days min-max 14.945 14.945
  
  duration in hours min-max 3.506 3.699
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216050437,2MASS J19342785-2303105,293.616061,-23.052948,6523.00,1.69,1.43,12.326,2.500,-6.200,
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216050437 293.6161 -23.0529 0.22 12.326 7
  

  

  Posted May 3, 2016 8:11 PM

• by ajamyajax

  Re 217393088 from Hans Martin's list: a very nice planetary fit here that could be an inflated hot Jupiter. Using the Huber/NEA value of 1.31 R_sol suggests a PC radius around 14.8Re +/-.

  s1=2469.425 p1=1.3198 d1=0.12 (2.88 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217393088 , 2MASS J19174538-2039156 , 14.279 , 13.965 , 13.971 , 0.314 , -0.006 , ('G6V', 0.97) , ('B6V', 4.0)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217393088 289.4391 -20.6544 0.09 15.293 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217393088,2MASS J19174538-2039156,289.439109,-20.654375,5981.00,1.31,1.05,15.293,-0.800,-5.300,
  

  

  Posted May 3, 2016 8:13 PM

• by JKD

  EPIC 215494096- PC
  S1 at 2538.35 BKJD, P1 ~???, Duration ~1.47 hrs, Depth ~1.6%, ( ? RE ~121 ?)

  Posted May 3, 2016 9:10 PM

• by ajamyajax

  Re 213817056 from Ivan's list and my transit observations: maybe a blended mini gas giant planet candidate here. 0.82 R_sol estimate.

  s1=2478.94 p1=13.61 d1=0.15 (3.6 hours or less)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213817056 , 2MASS J18543518-2811194 , 11.101 , 10.610 , 10.455 , 0.491 , 0.155 , ('K3V', 0.81) , ('K6V', 0.7)

  au min-max 0.09 0.11
  
  stellar diameter in solar units min-max 0.655 0.84
  
  stellar mass in solar units min-max 0.525 0.96
  
  period in days min-max 13.6 13.612
  
  duration in hours min-max 3.512 3.696
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213817056 283.6466 -28.1888 0.15 12.964 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213817056,2MASS J18543518-2811194,283.646594,-28.188760,5051.00,0.82,0.85,12.964,-29.200,-21.900,
  

  

  Posted May 4, 2016 2:52 PM

• by ajamyajax

  Re 217231249 from Hans Martin's list: a fairly deep transit and a wide range of stellar estimates suggest a binary in this light curve. But possible limb darkening is interesting. Also noting the transits are independent of the flux cycle.

  s1=2471.97 p1=4.832 d1=0.22 (5.28 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217231249 , 2MASS J19125497-2056220 , 12.677 , 12.355 , 12.208 , 0.322 , 0.147 , ('G5V', 0.98) , ('K5V', 0.75)

  au min-max 0.06 0.065
  
  stellar diameter in solar units min-max 1.53 1.85
  
  stellar mass in solar units min-max 1.23 1.575
  
  period in days min-max 4.823 4.84
  
  duration in hours min-max 4.384 4.901
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217231249 288.2290 -20.9394 0.21 13.838 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217231249,2MASS J19125497-2056220,288.229046,-20.939439,5950.00,1.80,0.93,13.838,2.900,7.500,
  

  

  Posted May 4, 2016 2:54 PM

• by ajamyajax

  Re 216018037 from Ivan's list: a fine small dwarf binary best seen in min corrected data, but there appears to be a third transit in the later times here also. But this is that 2516+ BJD glitch again, I believe.

  Also visual neighbor 216017588 has the same transits and is only 8.10 arcseconds away. The primary transit depths are about the same for both targets at ~3.4%. However 216018037 has the cleaner light curve and transits and appears to be the binary source. Also note these targets have dramatically different proper motions, if correct. The KepMags are identical so have to wonder about that.

  s1=2469.86 p1=1.791 d1=0.29583 (7.1 hours +/-)
  
  s2=2468.9645 p2=1.791 d2=0.29583 (7.1 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216018037 , 2MASS J18481537-2306460 , 10.699 , 10.084 , 9.803 , 0.615 , 0.281 , ('K6V', 0.7) , ('M3V', 0.4)
  
  216017588 , 2MASS J18481483-2306489 , 10.949 , 10.249 , 10.050 , 0.7 , 0.199 , ('M8V', 0.082) , ('K9V', 0.6)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216018037 282.0641 -23.1128 0.09 12.504 7
  
  216017588 282.0618 -23.1136 8.10 12.504 7
  
  216012188 282.1054 -23.1236 142.24 13.165 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216018037,2MASS J18481537-2306460,282.064080,-23.112782,3814.00,0.34,0.37,12.504,73.200,11.800,
  
  216017588,2MASS J18481483-2306489,282.061837,-23.113589,3967.00,0.45,0.51,12.504,-94.600,-22.700,

  
  
  

  Posted May 4, 2016 2:56 PM

• by ajebson in response to ajamyajax's comment.

  Here's the values taking extinction into account ... (though I haven't scaled it for distance yet, especially not for distance guessed from proper motion:

  

  As expected, a little earlier, but a radius still only ~1.0 Earth

  Edit: I still need to sanity check the extinction scaling for each filter and clean up the UI but MCMC fitting to evolution grids is next 😉

  --- Tony

  Posted May 4, 2016 8:59 PM

• by ajamyajax in response to ajebson's comment.

  Ok, plugging ~1.0 Sun for 216231580 into my fit's simple planetary radius calculation produces ~12.68Re (or 1.12x Rj) +/- which is Jupiter friendly of course.
  Hope it has a nice run as a planetary candidate.

  

  Posted May 5, 2016 12:24 AM

• by ajamyajax

  Re 217084873 from Hans Martin's list: this target looks like it could be contaminated by at least one eccentric binary based on the shallow transit depths seen here. And there seem to a number of eccentric EB's in this campaign too.

  s1=2469.37 p1=12.90 d1=0.23 (5.52 hours)
  
  s2=2473.657 p2=12.90 d2=0.23 (5.52 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217084873 , 2MASS J18531091-2111548 , 13.003 , 12.578 , 12.499 , 0.425 , 0.079 , ('K1V', 0.86) , ('G5V', 0.98)

  au min-max 0.115 0.13
  
  stellar diameter in solar units min-max 1.36 1.59
  
  stellar mass in solar units min-max 1.22 1.76
  
  period in days min-max 12.896 12.905
  
  duration in hours min-max 5.423 5.618
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217084873 283.2955 -21.1986 0.07 14.434 7
  
  217095684 283.2752 -21.1796 96.48 14.061 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217084873,2MASS J18531091-2111548,283.295491,-21.198581,5312.00,9.03,0.90,14.434,1.100,2.200,
  

  

  Posted May 5, 2016 12:32 AM

• by ajamyajax

  Re EPIC 214121667 - same as 214121478? from Ivan's list: well they have the same 2MASS and colors, and appearance at a glance anyway. There are some differences in the NEA values though.

  Also, these EPICs are mentioned by our Yale friends in this study:
  

  # Summary of K2 Program GO7078
  
  Title: Searching For Planets In Binary Stars
  
  PI: Wang, Ji (Yale University)
  
  CoIs: Fischer, Debra Ann; Huang, Xu
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214121667 , 2MASS J19143954-2719145 , 7.959 , 7.943 , 7.933 , 0.016 , 0.01 , ('A3V', 2.0) , ('B8V', 3.4)
  
  214121478 , 2MASS J19143954-2719145 , 7.959 , 7.943 , 7.933 , 0.016 , 0.01 , ('A3V', 2.0) , ('B8V', 3.4)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214121667 288.6644 -27.3203 0.08 9.486 7
  
  214121478 288.6648 -27.3208 2.27 8.779 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214121667,2MASS J19143954-2719145,288.664400,-27.320278,8924.00,2.38,2.35,9.486,,,
  
  214121478,2MASS J19143954-2719145,288.664821,-27.320849,8610.00,1.90,2.00,8.779,9.500,-24.300,
  

  Posted May 5, 2016 12:35 AM

• by ajamyajax

  Re 217149884 from Hans Martin's list: a mostly U-shaped fit which helps, but also a deep 3% transit that would be nearly 20Re in radius using the Huber/NEA 1.05 R_sol value.

  s1=2482.07 p1=16.689 d1=0.22 (5.28 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217149884 , 2MASS J19223838-2105018 , 13.055 , 12.703 , 12.660 , 0.352 , 0.043 , ('G8V', 0.94) , ('A8V', 1.67)

  au min-max 0.125 0.15
  
  stellar diameter in solar units min-max 1.09 1.355
  
  stellar mass in solar units min-max 0.935 1.615
  
  period in days min-max 16.685 16.697
  
  duration in hours min-max 5.181 5.371
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217149884 290.6600 -21.0839 0.16 14.216 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217149884,2MASS J19223838-2105018,290.659957,-21.083879,5886.00,1.05,0.91,14.216,-8.200,-17.300,
  

  

  Posted May 5, 2016 12:37 AM

• by JKD

  EPIC 215717520 - maybe true or a glitch

  An interesting signal at 2524.87 BKJD, Duration ~6.86 hrs, Depth ~4.5%. Although it is only partly visible and next to a „glitch“ it seems to be real.

  Posted May 5, 2016 8:09 PM

• by zoo3hans in response to JKD's comment.

  Dear JKD

  yes, I thought the same. EPIC 215717520 dip at BKJD 2524.95.

  Posted May 5, 2016 8:26 PM

• by JKD

  EPIC 215894766 pot. PC at2501.33 BKJD, Duration ~4.9 hrs, Depth ~2.5%

  Posted May 5, 2016 9:07 PM

• by zoo3hans in response to JKD's comment.

  Yes, Ivan has reported this as well. EPIC 215894766 , dip at BKJD 2501.39.

  Posted May 5, 2016 9:17 PM

• by JKD

  EPIC 215918208 - likely a PC at 2537.83 BKJD, Duration ~5.88 hrs, Depth ~0.2%

  Posted May 5, 2016 10:10 PM

• by ajamyajax

  Re 215894766 from Ivan's list and JKD mention: only a partial transit event in MAST, but looks complete in that other dataset so could be real enough. Fairly deep and V-shaped though, so my guess is stellar with a period long enough that a repeat would be out of view unfortunately.

  s1=2501.381 p1=? d1=0.20 (4.8 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215894766 , 2MASS J18423472-2320275 , 11.568 , 11.209 , 11.071 , 0.359 , 0.138 , ('G8V', 0.94) , ('K6V', 0.7)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215894766 280.6447 -23.3410 0.14 13.061 7
  
  215887090 280.6103 -23.3551 124.49 12.595 7
  
  215909187 280.6178 -23.3140 131.60 12.991 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215894766,2MASS J18423472-2320275,280.644675,-23.340969,5267.00,2.37,1.06,13.061,16.900,7.600,
  

  

  Posted May 6, 2016 2:21 AM

• by ajamyajax

  And in my opinion anyway EPIC 215717520 and 215918208 could be anything, difficult to tell. Suggest looking again with more corrected data.

  Posted May 6, 2016 2:22 AM

• by ajamyajax

  Re 216472905 from Hans Martin's list: looks like a close or contact binary with a primary transit depth ~7.3% in MC data. Also noting that MAST has shallower transit depths, but they are less consistent so not sure about that correction.

  s1=2468.671 p1=0.443465 d1=0.0875 (2.1 hours +/-)
  
  s2=2468.892 p2=0.443465 d2=0.0875 (2.1 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216472905 , 2MASS J18533153-2217079 , 12.170 , 11.551 , 11.437 , 0.619 , 0.114 , ('K6V', 0.7) , ('K3V', 0.81)

  au min-max 0.01 0.01
  
  stellar diameter in solar units min-max 0.745 0.945
  
  stellar mass in solar units min-max 0.65 0.71
  
  period in days min-max 0.433 0.453
  
  duration in hours min-max 1.2 1.458
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216472905,2MASS J18533153-2217079,283.381381,-22.285553,4704.00,14.09,0.90,13.905,-10.900,0.400,
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216472905 283.3814 -22.2856 0.18 13.905 7
  
  216474689 283.3711 -22.2824 36.08 14.137 7
  

  

  Posted May 6, 2016 2:25 AM

• by ajamyajax

  Re 216468514 from Hans Martin's list: this target looks promising as a Jupiter class planet candidate around 12.57Re using the Huber/NEA value of 1.46 R_sol. Or less, in radius calcs with other stellar estimates. And MC data used for this fit also (often MAST is better for this, but sometimes not).

  s1=2471.531 p1=3.3134 d1=0.13 (3.12 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216468514 , 2MASS J18595649-2217363 , 11.564 , 11.257 , 11.210 , 0.307 , 0.047 , ('G4V', 0.99) , ('F0V', 1.58)

  au min-max 0.04 0.05
  
  stellar diameter in solar units min-max 1.025 1.365
  
  stellar mass in solar units min-max 0.775 1.525
  
  period in days min-max 3.307 3.323
  
  duration in hours min-max 3.023 3.22
  

  From K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216468514 284.9854 -22.2934 0.07 12.749 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216468514,2MASS J18595649-2217363,284.985378,-22.293402,5948.00,1.46,1.13,12.749,-8.700,-2.100,
  

  
  

  Posted May 6, 2016 2:29 AM

• by ajebson in response to ajamyajax's comment.

  I think I've now got the basics back working again for K2. So for 216231580, I get the following:

  Period: 3.9057
  Radius: 12.55 Re

  Note: I'm not happy with the transit fit ... doesn't look like the limb darkening and/or inclination are correct

  Parameters overview:
  

  Stellar parameters from photometry:
  

  MCMC Transit fit:
  

  I still have some work to do though, as there is a big discrepancy between my values from photometry and those from the EPIC catalogue, which has a Teff of 6004C and a larger radius of 1.23Re. I also need incorporate myu 2MASS estimation into the more general scheme.

  Partly this is down to extinction, where they use an E(B-V) of 0.155 whereas from IPAC I get 0.0926 .. but that doesn't account for it all, especially as I'm adopting their [Fe/H] values.

  Guess I'd better do the code for fitting to the evolution grids, 'cos otherwise I'm clueless as to why the catalogue has such different results.

  --- Tony

  Posted May 7, 2016 7:08 PM

• by ajamyajax in response to ajebson's comment.

  If it helps, this might summarize what they were thinking:

  "The K2 Ecliptic Plane Input Catalog (EPIC) and Stellar Classifications of 119,000 Targets in Campaigns 1-7"
  
  Daniel Huber, Stephen T. Bryson, Michael R. Haas, Thomas Barclay, Steve B. Howell, Sanjib Sharma, Dennis Stello, Susan E. Thompson
  
  http://arxiv.org/pdf/1512.02643v1.pdf

  My two cents/pence: the C7 radius values seem a bit inflated to me in general though while the masses remain rather standard. I mean I see giants or subgiants but the transit durations don't seem to support a star that large. Unless every target is extremely blended perhaps. We know there is some of that of course. I suppose many of these stars could be considered evolved.

  Posted May 8, 2016 1:14 PM

• by ajamyajax

  Re 213840781 from Ivan's list: just adding to a few more identifications, this target looks like a binary as mentioned. The Huber/NEA radius values indicate a giant or subgiant at 4.41 R_sol.

  s1=2477.66 p1=12.366 d1=0.13 (3.12 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213840781 , 2MASS J19221466-2807044 , 12.342 , 11.926 , 11.787 , 0.416 , 0.139 , ('K1V', 0.86) , ('K5V', 0.75)

  au min-max 0.085 0.09
  
  stellar diameter in solar units min-max 0.585 0.655
  
  stellar mass in solar units min-max 0.535 0.635
  
  period in days min-max 12.375 12.376
  
  duration in hours min-max 3.031 3.213
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213840781 290.5611 -28.1179 0.10 13.727 7
  
  213836439 290.5383 -28.1307 85.83 12.725 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213840781,2MASS J19221466-2807044,290.561123,-28.117920,5252.00,4.41,0.91,13.727,7.200,-2.700,

  

  Posted May 8, 2016 1:16 PM

• by ajamyajax

  Re 216442060 from Hans Martin's list: also looks like another binary with a somewhat blended secondary at the half period here. The stellar estimates do vary a bit and the primary transit depth are fairly deep at ~1.4-1.5% for what they are. For example, at 1.63 R_sol an object radius estimate would be around 21.35Re.

  s1=2468.89 p1=5.2015 d1=0.12 (2.88 hours)
  
  s2=2471.49 p2=5.2015 d2=0.12 (2.88 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216442060 , 2MASS J19240996-2220271 , 11.815 , 11.603 , 11.532 , 0.212 , 0.071 , ('F6V', 1.25) , ('G1V', 1.07)

  au min-max 0.05 0.06
  
  stellar diameter in solar units min-max 0.75 0.965
  
  stellar mass in solar units min-max 0.615 1.065
  
  period in days min-max 5.202 5.207
  
  duration in hours min-max 2.78 2.98
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216442060,2MASS J19240996-2220271,291.041532,-22.340890,6953.00,1.63,1.48,12.796,-3.100,-9.700,

  

  Posted May 8, 2016 1:19 PM

• by ajamyajax

  Re 216442180 from Hans Martin's list: could be a blended binary with visible secondary and a shallow overall transit depth.

  s1=2469.523 p1=1.5673 d1=0.15 (3.6 hours or less)
  
  s2=2470.307 p2=1.5673 d2=0.15 (3.6 hours or less)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216442180 , 2MASS J18533600-2220263 , 10.959 , 10.708 , 10.673 , 0.251 , 0.035 , ('F9V', 1.14) , ('A4V', 1.91)

  au min-max 0.03 0.03
  
  stellar diameter in solar units min-max 1.445 1.85
  
  stellar mass in solar units min-max 1.45 1.485
  
  period in days min-max 1.557 1.576
  
  duration in hours min-max 2.702 3.459
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216442180 283.4000 -22.3407 0.18
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216442180,2MASS J18533600-2220263,283.400044,-22.340669,6241.00,1.61,1.29,12.107,9.100,4.100,

  On Simbad, 253.10 arcsecs away, V* V5545 Sgr -- Semi-regular pulsating Star , 18 53 52.84 -22 22 03.9

  

  Posted May 8, 2016 1:20 PM

• by ajamyajax

  Re 213563657 from Ivan's list and HM's mention: fairly deep primary transit (~3%) with a ragged secondary also present. Also noting the eclipses are just a bit off the flux cycle in timing meaning they move slightly over time.

  s1=2471.307 p1=3.4121 d1=0.16 (3.84 hours +/-)
  
  s2=2473.013 p2=3.4121 d2=0.14 (3.36 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213563657 , 2MASS J19224494-2859276 , 12.933 , 12.505 , 12.409 , 0.428 , 0.096 , ('K1V', 0.86) , ('K1V', 0.86)

  au min-max 0.045 0.05
  
  stellar diameter in solar units min-max 1.385 1.625
  
  stellar mass in solar units min-max 1.04 1.44
  
  period in days min-max 3.403 3.421
  
  duration in hours min-max 3.741 3.938
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213563657 290.6873 -28.9910 0.10 14.316 7
  
  213552626 290.6748 -29.0278 138.23 14.380 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213563657,2MASS J19224494-2859276,290.687273,-28.990984,5408.00,2.35,0.91,14.316,0.300,-7.300,1329

  

  Posted May 8, 2016 1:21 PM

• by JKD

  EPIC 216129500 - significant degree of intensity at S ~2548.9 BKJD, Duration ~180 hrs, Depth min 75% (already mentioned by DE on page 1)

  Posted May 8, 2016 9:12 PM

• by ajamyajax in response to JKD's comment.

  Re 216129500 from Ivan's list and JKD's mention: a hot massive star known for changes in brightness; see info and links here.

  Per Wiki:

  "R Coronae Borealis is a peculiar low-mass yellow supergiant star, and is the prototype of the rare RCB class of variable stars, which fade by several magnitudes at irregular intervals..."

  https://en.wikipedia.org/wiki/R_Coronae_Borealis

  Title: A K2 Survey of Hot Massive Stars during Campaign C7
  
  PI: Gies, Douglas Russell (Georgia State University)
  
  http://keplerscience.arc.nasa.gov/data/k2-programs/GO7042.txt

  From Simbad:

  Listed as V* V348 Sgr -- Post-AGB Star (proto-PN), Spectral type: B0/1?I?e

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range

  0.00 Variable V0348 Sgr 000-BCC-948 18 40 19.93 -22 54 29.3 Sgr RCB -- 11.2 - 19.0: V

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=28048

  Posted May 8, 2016 11:35 PM

• by ajamyajax

  Re 216313062 from Hans Martin's list: and as HM mentioned there are secondary transits here. Also a nice U-shaped fit, but note plenty deep and stellar estimates are all on the larger side. MC data used for this fit.

  s1=2472.106 p1=5.193 d1=0.26 (6.24 hours +/-)
  
  s2=2469.509 p2=5.193 d2=0.26 (6.24 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216313062 , 2MASS J19243809-2234222 , 7.533 , 7.621 , 7.562 , -0.088 , 0.059 , ('B6V', 4.0) , ('F6V', 1.25)

  au min-max 0.075 0.09
  
  stellar diameter in solar units min-max 2.49 3.09
  
  stellar mass in solar units min-max 2.08 3.62
  
  period in days min-max 5.183 5.202
  
  duration in hours min-max 6.14 6.339
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216313062 291.1587 -22.5728 0.09 7.698 7
  
  216329591 291.1548 -22.5430 108.14 12.430 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216313062,2MASS J19243809-2234222,291.158717,-22.572821,9791.00,2.40,2.45,7.698,-4.000,-18.400,226.8

  Listed as HD 182251 -- Star on Simbad, Proper motions mas/yr: -4.0 -18.4, Spectral type: B9.5III (giant)

  

  Posted May 8, 2016 11:37 PM

• by ajamyajax

  Re 216316812 from Hans Martin's list: more fairly large stellar estimates but if we assume a star of 3.0 R_sol or smaller, a high impact gas giant seems possible here. And including blending, that might account for a shorter duration observed than expected. But a stellar companion is also possible given these dimensions.

  s1=2469.24 p1==2.5401 d1=0.13 (3.12 hours or more)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216316812 , 2MASS J19133883-2233578 , 7.761 , 7.815 , 7.775 , -0.054 , 0.04 , ('B8V', 3.4) , ('A7V', 1.76)

  au min-max 0.035 0.045
  
  stellar diameter in solar units min-max 1.165 1.605
  
  stellar mass in solar units min-max 0.88 1.895
  
  period in days min-max 2.533 2.55
  
  duration in hours min-max 3.02 3.22
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216316812 288.4118 -22.5661 0.21 8.016 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216316812,2MASS J19133883-2233578,288.411835,-22.566052,10733.00,3.32,3.12,8.016,-1.900,-6.500,380.1

  Listed as HD 179478 -- Star on Simbad, Proper motions mas/yr: -1.9 -6.5, Spectral type: B8V

  

  Posted May 9, 2016 5:14 PM

• by ajamyajax

  Re 215501561 from Ivan's list and HM's mention: this target listed as a giant or subgiant at 7.88 R_sol by Huber/NEA, but everything else seems to indicate a smaller star or binary system. My guess is a binary with a V-shaped fit, and at 1.2 R_sol the transiting object radius would be ~15.7Re. There is a possible small secondary here but we should check that again with more corrected data.

  s1=2469.32 p1=1.98606 d1=0.11167 (2.68 hours +/-)
  
  s2=2470.313 p2=1.98606 d2=0.11167 (2.68 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215501561 , 2MASS J18552315-2405113 , 11.181 , 10.801 , 10.694 , 0.38 , 0.107 , ('G9V', 0.91) , ('K2V', 0.85)

  au min-max 0.03 0.035
  
  stellar diameter in solar units min-max 1.095 1.38
  
  stellar mass in solar units min-max 0.905 1.46
  
  period in days min-max 1.979 1.995
  
  duration in hours min-max 2.581 2.778
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215501561 283.8465 -24.0865 0.09 12.556 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215501561,2MASS J18552315-2405113,283.846475,-24.086490,5428.00,7.88,0.90,12.556,-7.700,3.500,2060

  
  

  Posted May 9, 2016 5:16 PM

• by ajamyajax

  Re 215816368 from Ivan's list and HM's mention: could be a Jupiter class planet candidate with an optimistic view of a smaller 0.82 R_sol dwarf or so in line with the colors. But note other stellar values are once again larger.

  s1=2471.56 p1=10.143 d1=0.21 (5.04 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215816368 , 2MASS J19433920-2329131 , 14.462 , 14.044 , 13.878 , 0.418 , 0.166 , ('K1V', 0.86) , ('K6V', 0.7)

  au min-max 0.09 0.11
  
  stellar diameter in solar units min-max 1.235 1.565
  
  stellar mass in solar units min-max 0.945 1.725
  
  period in days min-max 10.145 10.151
  
  duration in hours min-max 4.941 5.138
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215816368 295.9133 -23.4870 0.01 15.628 7
  
  215834357 295.9153 -23.4529 122.94 12.748 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215816368,2MASS J19433920-2329131,295.913301,-23.487002,5546.00,1.80,0.90,15.628,6.100,4.300,2286

  

  Posted May 9, 2016 8:06 PM

• by ajamyajax

  Re 215954155 from Hans Martin's list: this target listed as a giant on Simbad and seems to have fairly large stellar estimates all around. And 3.38 R_sol produces a transit object radius estimate of ~33Re. 1.83 R_sol would be ~17.9Re, but the fit is V-shaped which means larger if high-impact. Also a slightly eccentric and blended secondary could be present. But nearby 215951426 shows no obvious signs of transit contamination.

  s1=2470.315 p1=4.027 d1=0.202 (4.85 hours +/-)
  
  s2=2472.36 p2=4.027 d2=0.202 (4.85 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215954155 , 2MASS J18434093-2313504 , 8.092 , 8.054 , 8.009 , 0.038 , 0.045 , ('A7V', 1.76) , ('A9V', 1.66)

  au min-max 0.055 0.055
  
  stellar diameter in solar units min-max 1.825 1.83
  
  stellar mass in solar units min-max 1.37 1.375
  
  period in days min-max 4.018 4.025
  
  duration in hours min-max 4.754 4.758
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215954155 280.9205 -23.2307 0.10 8.751 7
  
  215951426 280.9036 -23.2359 59.01 15.995 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215954155,2MASS J18434093-2313504,280.920507,-23.230674,8592.00,3.38,2.58,8.751,0.300,-1.400,417.3

  Listed as HD 172906 -- Star on Simbad, Proper motions mas/yr: 0.3 -1.4, Spectral type: B9III (giant)

  

  Posted May 9, 2016 8:07 PM

• by ajamyajax

  Re 215367799: this target appears to be contaminated by probable EB 215365782, which is only 31.25 arcsecs away.

  EB 215365782 ephemeris:
  

  s1=2469.43 p1=1.49851 d1=0.205 (4.92 hours +/-)
  
  s2=2468.68 p2=1.49851 d2=0.205 (4.92 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215367799 , 2MASS J19344545-2421591 , 11.435 , 11.134 , 11.034 , 0.301 , 0.1 , ('G3V', 1.0) , ('K3V', 0.81)
  
  215365782 , 2MASS J19344346-2422144 , 10.376 , 10.024 , 9.864 , 0.352 , 0.16 , G , ('G8V', 0.94) , ('K6V', 0.7)

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215367799,2MASS J19344545-2421591,293.689387,-24.366416,6007.00,1.40,1.15,12.708,11.600,-7.300,537.1
  
  215365782,2MASS J19344346-2422144,293.681143,-24.370670,6045.00,1.47,1.11,11.578,-0.400,-12.800,325.7

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215367799 293.6894 -24.3664 0.07 12.708 7
  
  215365782 293.6811 -24.3707 31.25 11.578 7
  

  EB 215365782 listed as TYC 6889-302-1 -- Star suspected of Variability on Simbad, Proper motions mas/yr: -0.4 -12.8, 19 34 43.474 -24 22 14.41

  

  

  Posted May 10, 2016 2:08 PM

• by ajamyajax

  Re 215389654 from Ivan's list and HM's mention: another nice U-shaped and a fairly deep transit. In contrast with other recent candidates, this long of a duration and this period work better with a subgiant than the smaller K-dwarf indicated. But an ~1.8 R_sol estimate would produce a transiting object of ~37.5Re, which is definitely stellar.

  s1=2476.932 p1=23.512 d1=0.35 (8.4 hours or less)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215389654 , 2MASS J18541190-2419148 , 11.717 , 11.311 , 11.173 , 0.406 , 0.138 , ('K2V', 0.85) , ('K6V', 0.7)

  au min-max 0.17 0.195
  
  stellar diameter in solar units min-max 1.525 1.85
  
  stellar mass in solar units min-max 1.185 1.79
  
  period in days min-max 23.508 23.518
  
  duration in hours min-max 7.509 8.149
  

  Semi-Major Axis a (A.U.) = 0.179
  
  Stellar diameter ratio = 1.8
  
  Stellar mass ratio = 1.39
  
  Period ~= 23.501 days
  
  Duration ~= 8.4019 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215389654 283.5496 -24.3208 0.02 13.229 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215389654,2MASS J18541190-2419148,283.549607,-24.320801,5172.00,0.79,0.86,13.229,28.000,-42.400,275.8

  

  Posted May 11, 2016 8:24 PM

• by ajamyajax

  Re 215358983 on Ivan's list and HM's mention (update): this target's LC looks better in more corrected data. And the transit observed is U-shaped, but also has a fairly deep transit at ~2.14%. With a 1.88 R_sol estimate, the companion could be ~30Re.

  s1=2470.436 p1=6.4213 d1=0.25083 (6.05 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215358983 , 2MASS J19375524-2423058 , 12.689 , 12.366 , 12.328 , 0.323 , 0.038 , ('G5V', 0.98) , ('A7V', 1.76)

  Semi-Major Axis a (A.U.) = 0.071
  
  Stellar diameter ratio = 1.88
  
  Stellar mass ratio = 1.16
  
  Period ~= 6.429 days
  
  Duration ~= 6.0507 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215358983 294.4802 -24.3849 0.16 13.786 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215358983,2MASS J19375524-2423058,294.480211,-24.384943,6216.00,1.42,1.16,13.786,2.400,-2.300,950.3

  

  Posted May 11, 2016 8:26 PM

• by ajamyajax

  Re 215101303 from Ivan's list and HM's mention: maybe another possible Jupiter-class planet candidate here in my opinion also. Needed to use a small star estimate of 0.68 R_sol to get this radius estimate though. But a small dwarf seems possible anyway. Another take on the crowded C7 field issue is perhaps blended light boosts the other stellar values.

  s1=2472.635 p1=15.206 d1=0.1458 (3.5 hours or more)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215101303 , 2MASS J19173875-2456090 , 13.756 , 13.418 , 13.306 , 0.338 , 0.112 , ('G6V', 0.97) , ('K3V', 0.81)

  Semi-Major Axis a (A.U.) = 0.105
  
  Stellar diameter ratio = 0.68
  
  Stellar mass ratio = 0.67
  
  Period ~= 15.204 days
  
  Duration ~= 3.5012 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215101303 289.4115 -24.9359 0.17 14.891
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215101303,2MASS J19173875-2456090,289.411479,-24.935858,5906.00,1.38,0.99,14.891,5.600,-7.100,1352

  
  

  Posted May 11, 2016 8:29 PM

• by JKD

  EPIC 216529679 a pot PC

  Signal ~2540.10 BKJD, Duration ~8.82 hrs, Depth 0.35%

  Posted May 11, 2016 8:41 PM

• by JKD

  EPIC 216756275 maybe a PC (already mentioned on Page 1 by zoo3hans)

  Maybe an EB: Signal ~2510.05 BKJD, Duration ~10.29 hrs, Depth ~8.5%

  Posted May 11, 2016 9:11 PM

• by JKD

  EPIC 216786105 - Pot. PC

  Signal ~2524.36 BKJD, Duration ~17.65 hrs, Depth ~0.2%, P ~????

  Posted May 11, 2016 9:24 PM

• by ajamyajax

  Re 216756275 from Hans Martin's list and JKD's mention: a tiny dwarf according to Huber/NEA values at 0.18 R_sol helps here. And this is speculative since the observed could be a glitch, but even with a transit depth of ~4% this could be a Neptune candidate with a very long period from a model fit and a duration only estimate.

  s1=2510.076 p1=? d1=0.39 (9.36 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216756275 , 2MASS J19004384-2146526 , 16.066 , 15.543 , 15.306 , 0.523 , 0.237 , ('K3V', 0.81) , ('M3V', 0.4)

  Semi-Major Axis a (A.U.) = 2.4
  
  Stellar diameter ratio = 0.18
  
  Stellar mass ratio = 0.15
  
  Period ~= 3506.365 days
  
  Duration ~= 9.36 hours
  

  For Reference this period ~= 9.6 years
  
  Jupiter P=11.8 years, 5.20 AU
  
  Saturn P=29.5 years, 9.54 AU
  
  Neptune P=165 years, 30.06 AU
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216756275 285.1827 -21.7813 0.06 17.989 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216756275,2MASS J19004384-2146526,285.182687,-21.781288,3255.00,0.18,0.15,17.989,,,201.8±4666(?)

  

  Posted May 12, 2016 4:07 PM

• by ajamyajax

  Re 214741009 from Ivan's list and HM's and JKD's mention: another larger star radius value by Huber/NEA with a much shorter duration transit and different stellar estimates. And as was mentioned by the transit finders, this one looks like an EB and could be a blended binary. But with a ~0.75 R_sol estimate, a grazing gas giant is also possible.

  s1=2468.59 p1=7.2685 d1=0.11583 (2.78 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214741009 , 2MASS J18442777-2545133 , 12.430 , 11.916 , 11.788 , 0.514 , 0.128 , ('K3V', 0.81) , ('K4V', 0.78)

  au min-max 0.06 0.07
  
  stellar diameter in solar units min-max 0.625 0.775
  
  stellar mass in solar units min-max 0.545 0.865
  
  period in days min-max 7.261 7.273
  
  duration in hours min-max 2.681 2.868
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214741009 281.1157 -25.7537 0.20 14.012 7
  
  214731764 281.1124 -25.7754 78.76 11.965 7
  
  214741841 281.0855 -25.7517 98.36 13.803 7
  
  214738063* 281.0824 -25.7606 110.92 9.529 7
  
  214727446 281.0904 -25.7857 141.42 13.734 7
  
  214723998 281.1229 -25.7939 146.45 13.234 7
  
  214739296 281.1720 -25.7577 182.94 14.115 7
  
  214747815 281.1730 -25.7377 194.41 14.357 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214741009,2MASS J18442777-2545133,281.115750,-25.753732,4995.00,3.50,0.92,14.012,2.200,-14.600,1513±2613(?)

  Per Simbad 155.98 arcsecs away, CCDM J18443-2546AB -- Double or multiple star, Spectral type: K1III, 18 44 16.9 -25 46 06

  And bright neighbor 214738063 has possible similar transit contamination, but really isn't conclusive.

  

  Posted May 12, 2016 4:11 PM

• by ajamyajax

  Re 214888033 from Ivan's list and HM's mention: a wide range of stellar estimates and a shallow V-shaped fit suggests a blended binary here also.

  s1=2473.89 p1=7.4575 d1=0.10 (2.4 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214888033 , 2MASS J18433035-2524397 , 12.313 , 11.883 , 11.755 , 0.43 , 0.128 , ('K1V', 0.86) , ('K4V', 0.78)

  au min-max 0.055 0.065
  
  stellar diameter in solar units min-max 0.48 0.61
  
  stellar mass in solar units min-max 0.4 0.66
  
  period in days min-max 7.449 7.451
  
  duration in hours min-max 2.305 2.489
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214888033 280.8765 -25.4110 0.16 13.890 7
  
  214889119 280.8612 -25.4085 50.63 13.564 7
  
  214881119 280.9057 -25.4272 111.31 13.301 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214888033,2MASS J18433035-2524397,280.876513,-25.411043,5227.00,9.12,0.91,13.890,2.200,-2.400,3657±343.6

  

  Posted May 12, 2016 7:14 PM

• by ajamyajax

  Re 214611894 from Ivan's list and Hans Martin's mention: sparse data, but as noted by HM this could be a Jupiter class planet candidate when using a smaller 0.68 R_sol estimate. Note there is a slight offset in the alternating fits. But a half period fit did not reveal a secondary in this data. And despite the longer list of nearby EPICs, none show any sign of a similar ephemeris transit contamination.

  s1=2471.29 p1=21.567 d1=0.16 (3.84 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214611894 , 2MASS J18454575-2603548 , 10.484 , 10.157 , 10.034 , 0.327 , 0.123 , ('G6V', 0.97) , ('K3V', 0.81)

  au min-max 0.125 0.145
  
  stellar diameter in solar units min-max 0.61 0.74
  
  stellar mass in solar units min-max 0.56 0.875
  
  period in days min-max 21.559 21.57
  
  duration in hours min-max 3.747 3.931
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214611894 281.4407 -26.0652 0.16 11.872 7
  
  214611660 281.4562 -26.0658 50.33 13.672 7
  
  214619414 281.4491 -26.0472 70.34 13.908 7
  
  214602239 281.4467 -26.0889 87.52 10.753 7
  
  214622537 281.4552 -26.0396 103.49 14.100 7
  
  214605552 281.4747 -26.0808 123.59 12.747 7
  
  214627034 281.4329 -26.0286 134.14 13.514 7
  
  214626691 281.4282 -26.0295 134.70 13.876 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214611894,2MASS J18454575-2603548,281.440652,-26.065204,5397.00,2.00,1.10,11.872,-10.900,14.800,425±172

  
  

  Posted May 12, 2016 7:18 PM

• by JKD

  EPIC 217084873 already mentioned by zoo3hans list (page 1) and ajamyajax mention (page 7). IMO we have

  S1 at ~2473.66 BKJD, P1 ~8.59 d and

  S2 at 2495.21 BKJD and

  S3 at 2525.04 BKJD

  It’s not obvious, whether S2 and S3 is one object with P ~29.83 d or there are two objects with similar values Duration (~6.37 vs ~6.86 hrs) and Depth (~3300 vs. 2600 ppm)

  In case these signals are independent, it might be a 3 PC

  Posted May 13, 2016 8:39 PM

• by JKD

  EPIC 217086535 - PC with signal at

  S ~2509.71 BKJD, Duration ~8.82 hrs, Depth ~0.4%

  Might be a #Ring Candidate , very symmetric LC,

  Ingress of Ring centered at 2509.656 BKJD, Egress centered at 2509.778 BKJD

  Posted May 14, 2016 8:47 PM

• by JKD

  EPIC 217231249 - already mentioned by zoo3hans (page 1) and ajamyajax (page 7)
  I’m supporting the idea of a PC with p ~4.83 d vs. an EB

  Posted May 14, 2016 9:27 PM

• by JKD

  EPIC 217294389 - Planet Candidate (PC)

  S at 2499.93 BKJD, P = ???, Duration ~6.86 hrs, Depth ~0.2%

  Posted May 14, 2016 9:55 PM

• by JKD

  EPIC 217294389 - pot PC at

  S ~2488.51 BKJD, P ~??? d, Duration ~8.82 hrs, Depth ~0.3%

  Posted May 14, 2016 10:34 PM

• by ajamyajax

  Re 213936801: looks contaminated by probable EB 213936662, which is only 28.75 arcsecs away. And note both targets are considered giants or subgiants by Huber/NEA and thought to be at some distance, too. Also note this contamination is limited even though this deep-transit binary is one of five nearby K2 targets. EB 213936662 is the dimmest of the bunch however, so maybe that could explain it.

  ***Also 213936801 was spotted by Hans Martin and EB 213936662 was spotted by Ivan ***

  EB 213936662's emphemeris:
  
  s1=2468.998 p1=2.6001 d1=0.13 (3.12 hours +/-)
  
  s2=2470.298 p2=2.6001 d2=0.11 (2.64 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213936801 , 2MASS J19204513-2750060 , 11.293 , 10.689 , 10.498 , 0.604 , 0.191 , ('K5V', 0.75) , ('K8V', 0.62)
  
  213936662 , 2MASS J19204729-2750075 , 12.531 , 11.995 , 11.862 , 0.536 , 0.133 , ('K3V', 0.81) , ('K6V', 0.7)

  au min-max 0.04 0.045
  
  stellar diameter in solar units min-max 1.305 1.57
  
  stellar mass in solar units min-max 1.255 1.81
  
  period in days min-max 2.592 2.61
  
  duration in hours min-max 3.022 3.22
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213936801 290.1881 -27.8350 0.07 13.231 7
  
  213936662 290.1971 -27.8354 28.75 14.325 7
  
  213944052 290.1836 -27.8140 76.90 13.410 7
  
  213925429 290.1805 -27.8682 121.97 11.789 7
  
  213926096 290.1661 -27.8662 132.36 11.166 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213936801,2MASS J19204513-2750060,290.188081,-27.834990,4574.00,11.66,1.37,13.231,-3.800,-5.700,2602±147.8
  
  213936662,2MASS J19204729-2750075,290.197099,-27.835390,4864.00,9.53,0.97,14.325,-3.800,3.100,4021±1009

  
  

  Posted May 16, 2016 2:32 PM

• by JKD

  EPIC 217792851 - maybe a PC

  S at 2474.89 BKJD, P =???, Duration ~2.45 hrs, Depth ~0.5%

  Posted May 16, 2016 6:07 PM

• by JKD

  EPIC 218187050 - pot PC (also mentioned by zoo3hans on page 1)

  S at 2512.04 BKJD, P = ???, Duration ~13.73 hrs, Depth ~0.2%

  Posted May 16, 2016 6:50 PM

• by JKD

  EPIC 218204665 - pot PC

  S at 2535.87 BKJD, P =???, Duration ~2.94 hrs, Depth ~0.15%

  Posted May 16, 2016 8:58 PM

• by JKD

  EPIC 218704575 interesting upside-down signals starting at 2469.99 BKJD, P =14.09 d, Duration ~22.55 hrs, Intensity Increase ~0.6% (already mentioned on page 1 by zoo3hans)

  Posted May 18, 2016 6:53 PM

• by JKD

  EPIC 218751675 - looks like an EB candidate

  S1 at 2479.36 BKJD, P =???; Duration ~9.31 hrs, Depth ~0.2%

  S2 at 2502.28 BKJD, P =???, Duration ~8.82 hrs, Depth ~0.35%

  Posted May 18, 2016 7:05 PM

• by JKD

  EPIC 218838325 - maybe a long distant PC

  Signal ~2470.63 BKJD, P =???, Duration ~24.51 hrs, Depth ~0.16%, R ~6.76 RE

  Posted May 18, 2016 7:30 PM

• by JKD

  EPIC 218850937 - transit or glitch next to a break 2541.63 BKJD, Duration ~5.88 hrs, Depth ~0.2%

  update 2016-05-26: unfortunately not visible in SAP Flux -likely not a PC

  Posted May 18, 2016 7:38 PM

• by zoo3hans

  We have now the corrected LC's from Al Schmitt and Andrew Vanderburg.

  So I start again from the end and list additional candidates not mentioned before (to my knowledge):

  PC candidates:

  EPIC 213220822 Already mentioned by Ivan P=6.48125 days, starting at BKJD 2469.7, depth 0.007, duration about 4.5 hours.

  EPIC 213391329 Already mentioned by Ivan P=4.43 days, depth 0.018, duration about 5 hours.

  EPIC 213498963 Already mentioned by Ivan P=5.361 days, starting at BKJD 2473.17, depth 0.0065, duration about 8 hours, U-shaped.

  EPIC 214173069 I agree with Ivan. P=8.773 days, starting at BKJD 2470.92, depth 0.001, duration about 4 hours.

  EPIC 215079410 Maybe single transit at BKJD 2494.04, depth 0.003, duration about 46 hours.

  EPIC 215086199 Maybe P=42.67 days, at BKJD 2493.25 and 2535.92, depth 0.005, duration about 4 hours.

  EPIC 215090200 P=2.483 days, starting at BKJD 2469.4, depth 0.0025, duration about 5 hours.

  EPIC 215169384 P=40.61 days, eccentrical orbit, starting at BKJD 2489.38, depth 0.0005, duration about 5 hours.

  EPIC 215364084 P=2.74 days, starting at BKJD 2467.27, depth 0.002, duration about 5.5 hours.

  EPIC 215395410 Maybe single transit at BKJD 2478.21, depth 0.0004, duration about 8 hours.

  EPIC 215460540 Several single transits possible here: at BKJD 2475.89, depth 0.0004, duration about 24.5 hours, at BKJD 2506.77, depth 0.0004, duration 8 hours, at BKJD 2513.23, depth 0.0005, duration 6 hours, at BKJD 2535.4, depth 0.0003, duration 25 hours.

  EPIC 215626177 Mentioned by Ivan on page 1, P=2.077 days, starting at BKJD 2470.11, depth 0.0013, duration about 4 hours.

  EPIC 215682672 P=1.961475 days, starting at BKJD 2469.4, depth 0.00016, duration about 1 hour.

  EPIC 215854715 P=11.12 days, starting at BKJD 2477.08, depth 0.0003, duration about 4 hours.

  EPIC 215921981 Maybe single transit at BKJD 2495.6, depth 0.0007, duration about 4 hours, V-shaped though.

  EPIC 216008129 P=22.77 days, depth 0.0013, duration about 4.5 hours, fairly U-shaped.

  EPIC 216111905 P=3.019 days, starting at BKJD 2468.47, depth 0.0008, duration about 4 hours.

  EPIC 216166748 P=19.6825 days, starting at BKJD 2470.36, depth 0.0005, druarion about 5 hours.

  EPIC 216766690 P=38.36 days, starting at BKJD 2494.89, depth 0.0027, duration about 11 hours.

  EPIC 216831785 Single transit at BKJD 2505.1, depth 0.0004, duration about 21.5 hours.

  EPIC 216876207 P=32.3 days, starting at BKJD 2474.62, depth 0.008, duration about 6.5 hours.

  EPIC 216892056 P=2.78565 days, starting at BKJD 2470.05, depth 0.0012, duration about 2 hours.

  EPIC 216915207 P=0.5474 days, starting at BKJD 2468.77, depth 0.007, duration 1.5 hours.

  EPIC 217026897 P=75.7 days, starting at BKJD 2472.5, depth 0.002, duration about 4.5 hours. Other dips as well.

  EPIC 217106897 P=21.5 days, starting at BKJD 2473.28, depth 0.0008, duration about 6 hours.

  EPIC 217192839 Probably a multiplanet system. P1=16.035 days, starting at BKJD 2471.3, depth 0.00009, duration 4.5 hours. P2=26.805 days, starting at BKJD 2474.91, depth 0.0007, duration about 4 hours.

  EPIC 217274918 P=25.62 days, starting at BKJD 2476.5, depth 0.0023, duration about 7.5 days. The transit shape has interesting "wings", maybe a somewhat extended source?

  EPIC 217855533 P=21.59 days, starting at BKJD 2487.39, depth 0.00015 (!), duration about 5.5 hours.

  EPIC 217977895 P=21.7 days, starting at BKJD 2481.38, depth 0.0005, duration about 4.5 hours.

  EPIC 218088350 Maybe single transit at BKJD 2483.01, depth 0.0007, duration about 4.5 hours.

  EPIC 218170789 P=3.0413 days, starting at BKJD 2473.46, depth 0.0009, duration about 3.5 hours.

  EPIC 218414730 Maybe single long transit at BKJD 2480.15, depth 0.0011, duration about 17.5 hours.

  EPIC 218858534 I agree with JDK, P=44.55 days, starting at BKJD 2492.71, depth 0.0014, duration about 12 hours.

  EPIC 218916923 I agree with JDK, P=28.375 days, starting at BKJD 2492.84, depth 0.012, duration about 6 hours.

  EPIC 218998314 Maybe single transit at BKJD 2527.51, depth 0.003, duration about 4 hours.

  EPIC 219111248 P=4.36 days, starting at BKJD 2468.69, depth 0.0024, duration about 3.5 hours.

  EPIC 219588098 Maybe single transit at BKJD 2493.09, depth 0.0009, duration about 6.5 hours.

  EPIC 219670379 Maybe single transit at BKJD 2522.81, depth 0.003, duration about 9 hours.

  EB candidates:

  EPIC 213601365 (already mentioned on page_1 by Ivan) The secondary show interesting halo, it seems to be a somewaht extended source (rings? debris disk?).

  EPIC 215039888 P=1.806 days, starting at BKJD 2469.28, depth 0.0005, duration about 12 hours.

  EPIC 215472928 Maybe single eclipse at BKJD 2544.6, depth 0.0295, duration about 5 hours, (radius 29.51 R_Earth).

  EPIC 216439618 P=3.725 days. There seem to be smaller dips inbetween.

  EPIC 216684660 P=7.923 days. Alternating depths.

  EPIC 218212249 P=1.987 days, starting at BKJD 2470.13, depth 0.0035, duration about 6 hours. It looks a bit contaminated though, R_star=11.927 R_so.

  EPIC 219610822 P=29.52 days. Primaries starting at BKJD 2470.91. Probably contamination by a BGEB.

  EPIC 219747794 P=34.385 days, starting at BKJD 2474.17, depth 0.022, duration 4 hours, R=67.11 R_Earth, R_primary_star=4.034 R_sol.

  Other:

  EPIC 215078929 Maybe single transit at BKJD 2493.8, depth 0.006, duration about 39 hours. Probably contamination or glitch since I see it also on EPIC 215076898

  EPIC 215660649 Maybe single transit at BKJD 2539.4, depth 0.0009, duration about 5 hours, but probably glitch since I see it also on EPIC 215605388

  Posted May 18, 2016 7:44 PM

• by JKD

  EPIC 218858534 - PC

  Signal at 2492.69 BKJD, Period =44.49 d, Duration ~13.73 hrs, Depth ~0.15%

  EPIC 218901862 - PC

  Signal at 2511.77 BKJD, Period =??? d, Duration ~11.27 hrs, Depth ~0.7%

  EPIC 218916923 - PC with 3 repeats

  Signal at 2492.80 BKJD, P = 28.39 d, Duration ~5.88 hrs, Depth ~1.1%, R ~10.3 RE

  EPIC 218998353 - PC

  Signal at 2498.78 BKJD, P = ???, Duration ~3.92 hrs, Depth ~0.36 %, R ~3.27 RE

  EPIC 219069169 - a HB binary (already mention by zoo3hans on page 1)

  EPIC 219240689 - Likely an EB (already mentioned by zoo3hans on page 1)

  Signal at 2532.65 BKJD, P =???, Duration ~39.72 hrs, Depth ~2.5 %

  Posted May 18, 2016 7:44 PM

• by ajamyajax

  Regarding more corrected data,

  Thank you Andrew!! You are a gentleman and a scholar.

  Al also, of course. 😃 Appreciate both your work.

  Posted May 18, 2016 9:44 PM

• by ajamyajax

  Re 218704575 from Hans Martin's list and JKD's mention: this interesting "inverse transit" system appears to be a hot A-type star,
  which are the often the primary components of heartbeat binaries per a study mentioned previously (listed again below).

  The light curve has no periodic drop-in-flux (transit), but neither did heartbeat candidate and SB1 system KIC 9899216 discussed in the study. My guess is the companion is small and not transiting, but is still causing the A-type primary to brighten during the closest pass of an eccentric orbit. And every event is very similar in a binary kind of way, so perhaps we can rule out novae and microlensing also.

  s1=2470.01 p1=14.09 d1=0.95 (22.8 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218704575 , 2MASS J19032246-1818422 , 9.921 , 9.920 , 9.839 , 0.001 , 0.081 , ('A4V', 1.91) , ('G6V', 0.97)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218704575 285.8436 -18.3118 0.15 10.444 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218704575,2MASS J19032246-1818422,285.843615,-18.311761,8079.00,2.27,1.99,10.444,-5.300,-7.100,534.2±197.8

  Listed as HD 176954 -- Star on Simbad, Proper motions mas/yr: -4.30 -14.00, Spectral type: A0V, 19 03 22.4702 -18 18 42.384

  "HEARTBEAT STARS: SPECTROSCOPIC ORBITAL SOLUTIONS FOR SIX ECCENTRIC BINARY SYSTEMS"
  
  http://arxiv.org/pdf/1506.06196v1.pdf

  

  Posted May 18, 2016 9:45 PM

• by Dolorous_Edd

  PC

  EPIC 214787262 - period 8.241 , possible very small planet or contamination , 2MASS J19163558-2538417 -- High proper-motion Star;

  EPIC 214785795 - period 8.321; 250Re est

  EPIC 214419545 - maybe 9.399p; start from 2479.3

  EPIC 214234110 - speculative , but lets say 4.636 period; start at 2480

  EPIC 214173069 - 8.773; start 2479

  EPIC 213929381 - maybe dip at 2501

  EPIC 213905611 - maybe dips, see 2480, 2499

  EPIC 213817056 - mentioned on page 1 , period ~13.612

  EPIC 213748480 - period 3.129

  EPIC 213498963 - 5.361p est rad ~70Re so maybe EB

  EPIC 213220822 - maybe dips with 6.485 d period for example see 2476

  EPIC 213365915 - maybe dip at 2529

  EPIC 213593701 - maybe dip at 2524

  EPIC 213391329 - dips with 24.442d period

  EPIC 214262871 - W-shaped dip at 2494, maybe with ring or moon

  EPIC 214503319 - dip d2488

  EPIC 214562632 - maybe dip at 2522

  EPIC 214627034 - dip d2494

  EB

  EPIC 214669044 - 11.793 ; looks like contamination from EB

  EPIC 214648242

  EPIC 213703832 - period 0.515

  EPIC 213631028

  EPIC 213450150 - maybe dip at 2533

  EPIC 214022154 - single dip 2524

  RR Lyr

  EPIC 214771966

  EPIC 213820864 - Maybe contaminated by rr Lyr

  EPIC 213510672 - Maybe contaminated by rr Lyr

  EPIC 213626158 - Maybe contaminated by rr Lyr

  Other

  EPIC 213589823 - inverse transit at 2484

  EPIC 213729000 - dip 2533

  Posted May 19, 2016 1:05 PM

• by JKD

  EPIC 219605568 - PC

  Signal at 2500.61 BKJD, P =???, Duration ~8.33 hrs, Depth ~0.38%

  EPIC 219610822 - pot. EB with P~29.54d or contamination (already mentioned by zoo3hans on page 12)

  EPIC 219624311 - interesting system with an obvious P =3.84 d (mentioned by zoo3hans on page 1) probably overlapping with other signals, as Flux intensities are varying from ~3% to 12%

  Posted May 19, 2016 7:39 PM

• by ajamyajax

  Just another look at some previous list candidates with more corrected data:

  Re 219256848 from Hans Martin's list: limited stellar information available here like colors and so forth, but looks like this one could be a blended binary in Andrew's more corrected data.

  s1=2471.85 p1=20.938 d1=0.15 (3.6 hours +/-)

  au min-max 0.11 0.14
  
  stellar diameter in solar units min-max 0.52 0.695
  
  stellar mass in solar units min-max 0.405 0.835
  
  period in days min-max 20.938 20.939
  
  duration in hours min-max 3.523 3.7
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219256848 285.6788 -17.1773 0.12
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219256848,,285.678827,-17.177281,,,,13.068,27.800,13.600,

  

  Posted May 20, 2016 3:21 AM

• by ajamyajax

  Re 217084873 from Hans Martin's list revisited: thought this an eccentric binary maybe, but the transits here looks better with more corrected data so maybe at least two super-Neptunes here if not a giant star. 0.99 R_sol estimate.

  s1=2473.64 p1=8.6018 d1=0.16 (3.84 hours)
  
  s2=2495.202 p2=29.85 d2=0.242 (5.81 hours)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217084873 , 2MASS J18531091-2111548 , 13.003 , 12.578 , 12.499 , 0.425 , 0.079 , ('K1V', 0.86) , ('G5V', 0.98)

  Semi-Major Axis a (A.U.) = 0.079
  
  Stellar diameter ratio = 0.99
  
  Stellar mass ratio = 0.886
  
  Period ~= 8.6 days
  
  Duration ~= 3.8406 hours
  

  Semi-Major Axis a (A.U.) = 0.181
  
  Stellar diameter ratio = 0.99
  
  Stellar mass ratio = 0.886
  
  Period ~= 29.856 days
  
  Duration ~= 5.8154 hours
  

  Semi-Major Axis a (A.U.) = 0.086
  
  Stellar diameter ratio = 0.99
  
  Stellar mass ratio = 0.886
  
  Period ~= 9.752 days
  
  Duration ~= 4.005 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217084873 283.2955 -21.1986 0.07 14.434 7
  
  217095684 283.2752 -21.1796 96.48 14.061 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217084873,2MASS J18531091-2111548,283.295491,-21.198581,5312.00,9.03,0.90,14.434,1.100,2.200,5203±341.4
  

  
  

  Posted May 20, 2016 3:26 AM

• by ajamyajax

  Re 215717520 from JKD's list and HM's mention: this single transit looks better in more corrected data as shown. There isn't much stellar information available though, but using a 0.70 R_sol star estimate a gas giant planet candidate is certainly possible. Also there is no sign of transit contamination in nearby 215720390 which helps the PC cause.

  s1=2524.957 p1=536.483 d1=0.4854 (11.65 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215717520 , 2MASS J18430900-2340240 , 11.298 , 10.636 , 10.502 , 0.662 , 0.134 , ('M7V', 0.098) , ('K6V', 0.7)

  Semi-Major Axis a (A.U.) = 1.147
  
  Stellar diameter ratio = 0.7
  
  Stellar mass ratio = 0.7
  
  Period ~= 536.483 days
  
  Duration ~= 11.6501 hours
  

  For Reference this period ~= 1.47 years
  
  Jupiter P=11.8 years, 5.20 AU
  
  Saturn P=29.5 years, 9.54 AU
  
  Neptune P=165 years, 30.06 AU
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215717520 280.7875 -23.6734 0.15 12.920 7
  
  215720390 280.7963 -23.6681 34.61 13.650 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215717520,2MASS J18430900-2340240,280.787512,-23.673360,,,,12.920,-11.100,-32.300,

  

  Posted May 20, 2016 3:28 AM

• by JKD

  EPIC 219670379 - likely a PC (recently marked by zoo3hans at page 12)

  My data are: S ~2522. 83 BKJD, P =???, Duration ~4.90 hrs, Depth ~0.2% R ~10.88 RE

  EPIC 219725781 - PC signal next to a glitch area

  S at 2495.28 BKJD, P =???; Duration ~8.33 hrs, Depth ~0.45 %

  EPIC 219747794 - (already mentioned by zoo3hans on page 129

  S at 2474.177 BKJF, P ~34.372, Duration ~3.42 hrs, Depth ~2.3%

  EPIC 214611894 - EB (already contrarry discussed on page 1 and 11)

  IMO it looks like an EB with P ~21.55 d

  Posted May 20, 2016 9:09 PM

• by ajamyajax

  Re 214576668 from Ivan's list: this one appears to be a blended or a close contact binary. There are no signs of contamination in any of the nearby EPICs though, so must be from another source if blended.

  s1=2468.773 p1=0.39593 d1=0.0675 (1.62 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214576668 , 2MASS J18462924-2609064 , 12.157 , 11.544 , 11.434 , 0.613 , 0.11 , ('K6V', 0.7) , ('K4V', 0.78)

  au min-max 0.01 0.01
  
  stellar diameter in solar units min-max 1.055 1.19
  
  stellar mass in solar units min-max 0.81 0.895
  
  period in days min-max 0.386 0.406
  
  duration in hours min-max 1.52 1.635
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214576668 281.6218 -26.1518 0.12 14.185 7
  
  214578099 281.6271 -26.1483 21.16 13.831 7
  
  214575825 281.6134 -26.1539 28.30 13.013 7
  
  214574549 281.6409 -26.1571 64.50 10.624 7
  
  214568779 281.6254 -26.1713 71.16 13.883 7
  
  214575323 281.6482 -26.1552 86.07 13.262 7
  
  214571442 281.6519 -26.1650 108.15 13.796 7
  
  214575894 281.5880 -26.1538 109.58 12.962 7
  
  214574267 281.5822 -26.1578 129.89 13.038 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214576668,2MASS J18462924-2609064,281.621836,-26.151794,4481.00,0.61,0.69,14.185,-17.400,0.900,216.1±1984(?)

  

  Posted May 21, 2016 12:15 AM

• by ajamyajax

  Re 214611894 revisited with more corrected data: looks like there is an eccentric secondary transit here, so this target is probably a binary or a blended one.

  s1=2471.29 p1=21.567 d1=0.16 (3.84 hours +/-)
  
  s2=2476.257 p2=21.567 d2=0.16 (3.84 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214611894 , 2MASS J18454575-2603548 , 10.484 , 10.157 , 10.034 , 0.327 , 0.123 , ('G6V', 0.97) , ('K3V', 0.81)

  au min-max 0.125 0.145
  
  stellar diameter in solar units min-max 0.61 0.74
  
  stellar mass in solar units min-max 0.56 0.875
  
  period in days min-max 21.559 21.57
  
  duration in hours min-max 3.747 3.931
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214611894 281.4407 -26.0652 0.16 11.872 7
  
  214611660 281.4562 -26.0658 50.33 13.672 7
  
  214619414 281.4491 -26.0472 70.34 13.908 7
  
  214602239 281.4467 -26.0889 87.52 10.753 7
  
  214622537 281.4552 -26.0396 103.49 14.100 7
  
  214605552 281.4747 -26.0808 123.59 12.747 7
  
  214627034 281.4329 -26.0286 134.14 13.514 7
  
  214626691 281.4282 -26.0295 134.70 13.876 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214611894,2MASS J18454575-2603548,281.440652,-26.065204,5397.00,2.00,1.10,11.872,-10.900,14.800,425±172

  

  Posted May 21, 2016 12:17 AM

• by ajamyajax

  Re 219535682 from Hans Martin's list: looks like a blended binary in Andrew's more corrected data, which is deeper than MAST too. So perhaps this is the actual EB or a binary is close by.

  s1=2471.088 p1=2.6256 d1=0.15 (3.6 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219535682 , 2MASS J19112976-1630277 , 15.786 , 15.203 , 14.900 , 0.583 , 0.303 , ('K5V', 0.75) , ('M4V', 0.24)

  au min-max 0.04 0.045
  
  stellar diameter in solar units min-max 1.495 1.785
  
  stellar mass in solar units min-max 1.23 1.775
  
  period in days min-max 2.617 2.636
  
  duration in hours min-max 3.502 3.7
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219535682 287.8740 -16.5077 0.04 18.125 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219535682,2MASS J19112976-1630277,287.874012,-16.507698,2503.00,0.11,0.09,18.125,,,89.38±4590(?)

  

  Posted May 21, 2016 12:18 AM

• by ajamyajax

  Re 214419545 from Ivan's list: possible blended super-Earth candidate in this fairly busy light curve and stellar neighborhood. 0.79 R_sol estimate. But even using the 1.13 R_Sol Huber/NEA value yields a radius estimate less than 2Re.

  s1=2469.934 p1=9.404 d1=0.13 (3.12 hours or less)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214419545 , 2MASS J18534430-2632189 , 10.120 , 9.803 , 9.681 , 0.317 , 0.122 , ('G5V', 0.98) , ('K3V', 0.81)

  au min-max 0.085 0.085
  
  stellar diameter in solar units min-max 0.77 0.815
  
  stellar mass in solar units min-max 0.925 0.925
  
  period in days min-max 9.411 9.411
  
  duration in hours min-max 3.034 3.212
  

  Semi-Major Axis a (A.U.) = 0.085
  
  Stellar diameter ratio = 0.79
  
  Stellar mass ratio = 0.917
  
  Period ~= 9.402 days
  
  Duration ~= 3.1212 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214419545 283.4346 -26.5386 0.13 11.458 7

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214419545,2MASS J18534430-2632189,283.434640,-26.538600,5794.00,1.75,1.13,11.458,-8.100,-28.300,326.7±114

  

  Posted May 21, 2016 12:20 AM

• by ajamyajax

  Re 217192839 from Hans Martin's list: as HM mentioned, looks like a multiplanet system with two good sub-Neptune PCs. Edit: one could be toward the super-Earth size, but seems unusual that a rocky planet would orbit outside a mini gas giant so figure blending could especially increase that radii a bit. 0.63 R_sol estimate.

  s1=2471.30 p1=16.03 d1=0.13 (3.12 hours or more)
  
  s2=2474.91 p2=26.81 d2=0.137 (3.29 hours or more)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217192839 , 2MASS J19120646-2100274 , 10.970 , 10.390 , 10.302 , 0.58 , 0.088 , ('K5V', 0.75) , ('G9V', 0.91)

  au min-max 0.095 0.115
  
  stellar diameter in solar units min-max 0.505 0.645
  
  stellar mass in solar units min-max 0.445 0.79
  
  period in days min-max 16.026 16.032
  
  duration in hours min-max 3.033 3.213
  

  au min-max 0.16 0.16
  
  stellar diameter in solar units min-max 0.61 0.7
  
  stellar mass in solar units min-max 0.76 0.76
  
  period in days min-max 26.814 26.814
  
  duration in hours min-max 3.639 4.175
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217192839 288.0269 -21.0076 0.17 12.601 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217192839,2MASS J19120646-2100274,288.026925,-21.007642,4563.00,0.63,0.70,12.601,-32.900,16.500,127.1±25.36

  Also on Simbad, 222.12 arcsecs away: [VV2006] J191154.1-210244 -- Quasar, 19 11 53.9374 -21 02 43.802

  
  

  Posted May 21, 2016 12:22 AM

• by Dolorous_Edd

  214669044 - probably contaminat

  214690121 - dips see 2512; 2537

  214722449 - dip d2491

  214753294 - eb

  214785795 -

  214787262 - 8.236

  214834031 - eb; period 1.351

  214918279 - a bit wierd

  214951008 - maybe dip 2486

  214888033 - 7.460

  Posted May 21, 2016 3:00 PM

• by Dolorous_Edd

  215065770 - dip 2493

  Epic 215104732 - outburst 2484

  Posted May 21, 2016 3:08 PM

• by ajamyajax

  Re 218858534 from JKD's list and HM's mention: looks like a mid F-type star or hotter here, so a PC is possible in the sub-Saturn desert or better hopefully meaning a larger radius. A glitch in the transit area is a bit of a worry though since this transit not too visible in the MAST data.

  s1=2492.703 p1=44.55 d1=0.45 (10.8 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218858534 , 2MASS J19062151-1801075 , 11.288 , 11.092 , 11.109 , 0.196 , -0.017 , ('F5V', 1.32) , ('B3V', 5.4)

  au min-max 0.28 0.295
  
  stellar diameter in solar units min-max 1.75 1.85
  
  stellar mass in solar units min-max 1.475 1.725
  
  period in days min-max 44.542 44.559
  
  duration in hours min-max 9.912 10.478
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218858534 286.5897 -18.0188 0.12 11.969 7

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218858534,2MASS J19062151-1801075,286.589670,-18.018782,6483.00,1.45,1.17,11.969,-26.000,6.800,518.4±110.6

  

  Posted May 21, 2016 5:36 PM

• by ajamyajax

  Re 214787262 from Ivan's list: a nice find and interesting possible small planet candidate system in my opinion. This nearby dwarf with a high proper motion as Ivan mentioned is also a very small star at ~0.21-0.34 R_sol. Even if a bit larger than this high range radius estimate of 0.34 or so, a PC here would be Earth-size or less considering the average blended transit fit. Also noting that nearby target 214783220 shows no sign of transit contamination which helps.

  s1=2469.06 p1=8.238 d1=0.0667 (1.6 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214787262 , 2MASS J19163558-2538417 , 9.697 , 9.102 , 8.852 , 0.595 , 0.25 , ('K5V', 0.75) , ('M2V', 0.5)
  
  214783220 , 2MASS J19164007-2539154 , 13.331 , 12.797 , 12.551 , 0.534 , 0.246 , ('K3V', 0.81) , ('M2V', 0.5)

  au min-max 0.06 0.06
  
  stellar diameter in solar units min-max 0.345 0.345
  
  stellar mass in solar units min-max 0.425 0.425
  
  period in days min-max 8.234 8.234
  
  duration in hours min-max 1.685 1.685
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214787262 289.1483 -25.6450 0.13 12.533 7
  
  214783220 289.1670 -25.6543 69.34 15.320 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214787262,2MASS J19163558-2538417,289.148311,-25.644965,3432.00,0.21,0.20,12.533,28.600,-177.600,33.42±14.38
  
  214783220,2MASS J19164007-2539154,289.166991,-25.654271,3502.00,0.23,0.23,15.320,-62.400,-36.400,101.9±30.95

  Listed a 2MASS J19163558-2538417 -- High proper-motion Star on Simbad, Proper motions mas/yr: 59.0 -316.0

  

  Posted May 21, 2016 5:38 PM

• by ajamyajax

  Re 219610822 from Hans Martin's list and JKD's mention: this target looks like an eccentric EB where a binary transit already suggested. But no sign of contamination in the nearby EPICs.

  s1=2470.92 p1=29.55 d1=0.23 (5.52 hours)
  
  s2=2482.02 p2=29.55 d2=0.25 (6.0 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219610822 , 2MASS J19144049-1618344 , 12.001 , 11.566 , 11.423 , 0.435 , 0.143 , ('K3V', 0.81) , ('K5V', 0.75)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219610822 288.6687 -16.3096 0.16 13.411 7
  
  219604603 288.6763 -16.3261 65.06 13.831 7
  
  219605174 288.6572 -16.3246 67.20 12.362 7
  
  219618103 288.6596 -16.2899 77.46 16.342 7
  
  219605568 288.6861 -16.3235 78.27 13.882 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219610822,2MASS J19144049-1618344,288.668716,-16.309557,5210.00,3.73,0.90,13.411,3.100,-16.400,1381±1938(?)

  

  Posted May 22, 2016 4:11 PM

• by ajamyajax

  Re 219624311 from Hans Martin's list and JKD's mention: this transit seems to be the primary of a contaminating binary. And could be one at some distance with the uneven depth transits that also vary in different corrective data.

  s1=2470.555 p1=3.8492 d1=0.14 (3.36 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219624311 , 2MASS J19174392-1616246 , 15.500 , 14.810 , 14.548 , 0.69 , 0.262 , ('M8V', 0.082) , ('M3V', 0.4)

  au min-max 0.045 0.055
  
  stellar diameter in solar units min-max 1.075 1.39
  
  stellar mass in solar units min-max 0.82 1.505
  
  period in days min-max 3.84 3.859
  
  duration in hours min-max 3.261 3.459
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219624311 289.4330 -16.2735 0.04 17.999 7
  
  219628385 289.4743 -16.2627 147.92 12.247 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219624311,2MASS J19174392-1616246,289.433006,-16.273508,4513.00,0.60,0.70,17.999,,,1037±6325(?)

  

  Posted May 22, 2016 4:13 PM

• by ajamyajax

  Re 215067200 from Ivan's list: this very bright and hot target (5.921 KepMag, ~9210 Teff) is considered a double or multiple star, and the one stellar transit event looks best in MAST data. Also, and not surprising from such a bright source, it is contaminating ALL of the nearby K2 targets listed below to some degree. Edit: and not shown, but there are a half dozen or so EPICs within the same distance that do not show any of this transit contamination.

  s1=2493.82 p1=? d1=1.7 (40.8 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215067200 , 2MASS J18444960-2500394 , 5.640 , 5.602 , 5.613 , 0.038 , -0.011 , ('A7V', 1.76) , ('B5V', 4.6)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215067200 281.2067 -25.0109 0.12 5.921 7
  
  215076352 281.1836 -24.9906 104.93 13.752 7
  
  215080287 281.2017 -24.9818 106.05 14.082 7
  
  215076898 281.2340 -24.9894 118.12 13.547 7
  
  215055883 281.1792 -25.0360 127.21 12.855 7
  
  215078929 281.1795 -24.9849 128.94 14.025 7
  
  215078215 281.2367 -24.9865 131.64 14.014 7
  
  215079348 281.2367 -24.9840 137.81 14.041 7
  
  215078060 281.2428 -24.9868 146.41 13.155 7
  
  215051970 281.2386 -25.0446 159.87 14.254 7
  
  215087961 281.2096 -24.9651 165.21 12.682 7
  
  215078516 281.1638 -24.9858 166.54 11.847 7
  
  215065770 281.1517 -25.0142 179.71 12.681 7
  
  215089329 281.2220 -24.9621 182.72 13.896 7
  
  215088152 281.1816 -24.9647 185.39 13.453 7
  
  215090439 281.2272 -24.9595 196.85 13.983 7
  
  215049290 281.2493 -25.0504 198.87 11.531 7
  
  215067774 281.2706 -25.0096 208.64 13.190 7
  
  215079410 281.2640 -24.9838 211.01 13.664 7
  
  215039579 281.1851 -25.0719 230.54 13.488 7
  
  215096838 281.2167 -24.9455 237.76 9.207 7
  
  215043440 281.1506 -25.0634 262.95 13.990 7
  
  215097921 281.1668 -24.9431 276.63 14.019 7
  
  215082811 281.2838 -24.9764 280.68 12.407 7
  
  215060000 281.1088 -25.0269 324.40 14.392 7
  
  215050244 281.1065 -25.0485 353.64 14.016 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215067200,2MASS J18444960-2500394,281.206665,-25.010914,9210.00,4.33,3.01,5.921,1.420,-22.540,177.3±11.63

  Listed as HD 173117 -- Double or multiple star on Simbad, Proper motions mas/yr: 1.42 -22.54, Spectral type: B8III (giant)

  

  Posted May 22, 2016 4:15 PM

• by ajamyajax

  Re 219747794 from Hans Martin's list: this faint target looks rather stellar in transit shape and depth. Although if a 0.67 R_sol star, a radius estimate for a transiting object here is ~10.9Re. There are no signs of transit contamination in the nearby EPICs, but there is a bright possible binary only 139.68 arcsecs away (see Aladin Lite image; it's below our target). 219734360 is closer however and shows no similar transit events, but perhaps the aperture angle makes a difference.

  s1=2474.167 p1=34.386 d1=0.195 (4.68 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219747794 , 2MASS J19174230-1555462 , 15.873 , 15.274 , 15.139 , 0.599 , 0.135 , ('K5V', 0.75) , ('K6V', 0.7)

  au min-max 0.175 0.175
  
  stellar diameter in solar units min-max 0.66 0.68
  
  stellar mass in solar units min-max 0.605 0.605
  
  period in days min-max 34.377 34.377
  
  duration in hours min-max 4.615 4.754
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219747794 289.4263 -15.9295 0.11 17.713 7
  
  219737920 289.4593 -15.9582 154.08 13.915 7
  
  219734360 289.3971 -15.9686 173.19 13.098 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219747794,2MASS J19174230-1555462,289.426269,-15.929511,5052.00,4.03,0.91,17.713,,,8504±3833

  From Simbad:
  
  25.88 arcsecs: TYC 6296-1040-1 -- Star, Proper motions mas/yr: 8.5 0.0, 19 17 42.0415 -15 55 20.614
  
  139.68 arcsecs: CCDM J19177-1558A -- Double or multiple star, 19 17 39.96 -15 58 01.7
  
  139.68 arcsecs: HD 180562 -- Star, Proper motions mas/yr: 24.48 -19.13, Spectral type: A3/5V+A2/3V
  

  
  

  Posted May 22, 2016 4:17 PM

• by ajamyajax

  Re 214785795 from Ivan's list: well this target indicated as a 46.04 R_sol giant by Huber/NEA, but only seems to be a slightly eccentric blended binary here, judging by the slight offset and matching shallow depth transits. Also no obvious sign of these transits in any of the nearby EPICs.

  s1=2472.475 p1=8.234 d1=0.16 (3.84 hours)
  
  s2=2476.655 p2=8.234 d2=0.16 (3.84 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214785795 , 2MASS J18460055-2538544 , 10.494 , 9.624 , 9.352 , 0.87 , 0.272 , ('L1V', '...') , ('M3V', 0.4)

  au min-max 0.07 0.09
  
  stellar diameter in solar units min-max 0.895 1.21
  
  stellar mass in solar units min-max 0.675 1.435
  
  period in days min-max 8.224 8.235
  
  duration in hours min-max 3.744 3.939
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214785795 281.5026 -25.6486 0.20 13.249 7
  
  214783968 281.4852 -25.6526 58.18 14.228 7
  
  214776552 281.4931 -25.6701 83.40 12.234 7
  
  214791447 281.4686 -25.6351 120.39 13.017 7
  
  214785947 281.4642 -25.6482 124.49 13.972 7
  
  214770352 281.5155 -25.6847 136.72 12.404 7
  
  214788609 281.4603 -25.6418 139.29 12.838 7
  
  214794287 281.4629 -25.6283 147.94 13.398 7
  
  214802000 281.4843 -25.6103 149.94 11.990 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214785795,2MASS J18460055-2538544,281.502559,-25.648559,3862.00,46.04,1.06,13.249,-4.800,5.800,5352±2456

  Also noting an inverse transit, glitch, or flare at 2475.893 BKJD, duration ~= 0.12
  
  And 214783968 has a similar event around 2475.6.

  
  

  Posted May 23, 2016 12:45 AM

• by ajamyajax

  Re 218916923 from JKD's list and HM's mention: looks good as a possible Jupiter class planet candidate, 0.93 R_sol estimate.

  s1=2492.818 p1=28.382 d1=0.2175 (5.22 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218916923 , 2MASS J19161596-1754384 , 10.177 , 9.768 , 9.660 , 0.409 , 0.108 , ('K2V', 0.85) , ('K2V', 0.85)

  Semi-Major Axis a (A.U.) = 0.18
  
  Stellar diameter ratio = 0.93
  
  Stellar mass ratio = 0.965
  
  Period ~= 28.371 days
  
  Duration ~= 5.2201 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218916923 289.0665 -17.9107 0.12 11.470 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218916923,2MASS J19161596-1754384,289.066532,-17.910689,5388.00,0.89,0.95,11.470,34.700,-8.200,169±257.3

  Listed as TYC 6300-2008-1 -- Star on Simbad, Proper motions mas/yr: 34.7 -8.2, 19 16 15.968 -17 54 38.48

  

  Posted May 23, 2016 12:47 AM

• by ajamyajax

  Re 214234110 from Ivan's list and considered speculative.. This periodic transit is shallow and very blended for a near Sun-size star, so it could be anything including a high-impact small planet candidate.

  s1=2470.888 p1=4.6369 d1=0.08 (1.92 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214234110 , 2MASS J19133053-2701010 , 10.418 , 10.114 , 10.021 , 0.304 , 0.093 , ('G3V', 1.0) , ('K0V', 0.89)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214234110 288.3772 -27.0169 0.18 11.624 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214234110,2MASS J19133053-2701010,288.377158,-27.016935,5689.00,0.98,0.99,11.624,14.600,-58.400,203.9±74.71

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  4.21 Variable ASAS J191328-2705.2 -- 19 13 27.83 -27 05 10.9 Sgr MISC 39.072674 10.54 (0.08) V

  Listed as TYC 6882-198-1 -- Star on Simbad, Proper motions mas/yr: 14.6 -58.4, 19 13 30.518 -27 01 00.97

  

  Posted May 23, 2016 4:28 PM

• by ajamyajax

  Re 219111248 from Hans Martin's list: this target could have a nice small star planet candidate, maybe 1.97Re with a 0.52 R_sol estimate or less.

  s1=2468.69 p1=4.361 d1=0.08 (1.92 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219111248 , 2MASS J19151074-1730050 , 12.489 , 11.847 , 11.623 , 0.642 , 0.224 , ('M7V', 0.098) , ('M0V', 0.58)

  au min-max 0.04 0.045
  
  stellar diameter in solar units min-max 0.47 0.585
  
  stellar mass in solar units min-max 0.45 0.64
  
  period in days min-max 4.356 4.358
  
  duration in hours min-max 1.822 2.017
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219111248 288.7948 -17.5014 0.09 14.766 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219111248,2MASS J19151074-1730050,288.794777,-17.501388,3840.00,0.39,0.43,14.766,51.200,20.400,131.4±31.59

  

  Posted May 23, 2016 4:31 PM

• by ajamyajax

  Re 214173069 from Ivan's list: this target also looks good as a mini gas giant planet candidate. There are some faint signs of blending but that's about it. And consistent stellar parameters around 0.70 R_sol with the mass being a bit more.

  s1=2470.91 p1=8.777 d1=0.12 (2.88 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214173069 , 2MASS J18520762-2710499 , 11.151 , 10.664 , 10.514 , 0.487 , 0.15 , ('K2V', 0.85) , ('K5V', 0.75)

  au min-max 0.065 0.08
  
  stellar diameter in solar units min-max 0.58 0.76
  
  stellar mass in solar units min-max 0.475 0.885
  
  period in days min-max 8.77 8.785
  
  duration in hours min-max 2.787 2.979
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214173069 283.0318 -27.1805 0.22 12.928 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214173069,2MASS J18520762-2710499,283.031757,-27.180546,4659.00,0.70,0.78,12.928,-9.400,-37.100,160.1±29.22

  

  Posted May 23, 2016 4:33 PM

• by ajamyajax

  Re 218212249 from Hans Martin's list: this target an EB already known as V1120 Sgr. Also best visible in min corrected data as shown here. And there might be some faint contamination of the two nearby EPICs.

  s1=2470.121 p1=1.98727 d1=0.262 (6.29 hours +/-)
  
  s2=2469.128 p2=1.98727 d2=0.262 (6.29 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218212249 , 2MASS J19153261-1912346 , 11.031 , 10.383 , 10.223 , 0.648 , 0.16 , ('M7V', 0.098) , ('K6V', 0.7)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218212249 288.8859 -19.2096 0.08 13.115 7
  
  218203322 288.9103 -19.2255 100.70 12.569 7
  
  218222249 288.8549 -19.1915 123.99 13.296 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218212249,2MASS J19153261-1912346,288.885916,-19.209616,4539.00,11.93,1.20,13.115,-8.500,2.000,2370±1275

  Per VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable V1120 Sgr 000-BFF-577 19 15 32.62 -19 12 34.6 Sgr EA/SD 1.987048 14.7 - 16.8 p
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=28820

  Listed as V* V1120 Sgr -- Eclipsing binary of Algol type (detached) on Simbad, 19 15 32.62 -19 12 34.6

  

  Posted May 24, 2016 2:25 PM

• by ajamyajax

  Re 213748480 from Ivan's list: seems blended with more of a V-shape and a wide range of larger stellar estimates for a shallow and short duration transit.

  s1=2471.191 p1=3.1291 d1=0.1033 (2.48 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213748480 , 2MASS J18480500-2823469 , 11.350 , 11.271 , 11.273 , 0.079 , -0.002 , ('F0V', 1.58) , ('B7V', 3.9)

  au min-max 0.035 0.045
  
  stellar diameter in solar units min-max 0.74 1.025
  
  stellar mass in solar units min-max 0.585 1.245
  
  period in days min-max 3.124 3.137
  
  duration in hours min-max 2.341 2.538
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213748480 282.0208 -28.3963 0.10 12.034 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213748480,2MASS J18480500-2823469,282.020810,-28.396325,7852.00,1.99,1.83,12.034,2.000,-2.300,890.5±341

  Listed as TYC 6871-1154-1 -- Star on Simbad, Proper motions mas/yr: 2.0 -2.3, 18 48 04.994 -28 23 46.77

  

  Posted May 24, 2016 2:26 PM

• by ajamyajax

  Re 218170789 from Hans Martin's list: also blended, but could be ok as a possible planet candidate with the assistance of consistent stellar estimates. 0.80 R_sol used for this fit.

  s1=2473.46 p1=3.0412 d1=0.10 (2.4 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218170789 , 2MASS J18510667-1917041 , 11.290 , 10.771 , 10.627 , 0.519 , 0.144 , ('K3V', 0.81) , ('K5V', 0.75)

  au min-max 0.035 0.04
  
  stellar diameter in solar units min-max 0.745 0.92
  
  stellar mass in solar units min-max 0.615 0.925
  
  period in days min-max 3.037 3.05
  
  duration in hours min-max 2.301 2.497
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218170789 282.7778 -19.2845 0.13 12.890 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218170789,2MASS J18510667-1917041,282.777832,-19.284481,4862.00,0.80,0.85,12.890,4.800,-30.700,222.3±692.5(?)

  

  Posted May 24, 2016 2:27 PM

• by ajamyajax

  Re 213498963 from Ivan's list and HM's mention: finally another longer duration transit that seems to support the giant or subgiant stellar values published. I only get a modest 1.95 R_sol estimate though, but the duration could be longer if blended. And even with a somewhat noisy U-shape, the fit seems to be on the stellar side.. This would only be larger with the Huber/NEA value too as Ivan noted (up to 70Re). Also the nearby EPICs show no sign of this transit in the way of contamination.

  s1=2473.167 p1=5.3635 d1=0.28 (6.72 hours or more)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213498963 , 2MASS J19202635-2912395 , 12.410 , 11.842 , 11.743 , 0.568 , 0.099 , ('K6V', 0.7) , ('K3V', 0.81)

  Semi-Major Axis a (A.U.) = 0.055
  
  Stellar diameter ratio = 1.95
  
  Stellar mass ratio = 0.787
  
  Period ~= 5.369 days
  
  Duration ~= 6.7258 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213498963 290.1098 -29.2110 0.04 14.098 7
  
  213500295 290.0825 -29.2060 87.66 13.335 7
  
  213507221 290.1390 -29.1822 138.48 12.446 7
  
  213494473 290.1506 -29.2264 139.65 13.538 7
  
  213493223 290.0693 -29.2307 145.66 12.119 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213498963,2MASS J19202635-2912395,290.109800,-29.211010,4841.00,7.80,0.94,14.098,2.300,-7.700,3040±2621

  

  Posted May 24, 2016 2:30 PM

• by zoo3hans

  Again I'd like to thank Mark for his enormous effort to uncover good candidates.

  I realized that Andrew has now his corrected LC's also online and with a detrended version too. Maybe it's interesting to check that as well in some cases.

  For example EPIC 213498963 looks like this:

  

  Posted May 24, 2016 4:12 PM

• by Dolorous_Edd

  EPIC 213391329 maybe sort of interesting

  Could be gas giant around red dwarf, could also be contamination since region is rather crowded

  IMO likely contamination because at least few stars are well within the aperture

  Posted May 24, 2016 8:12 PM

• by ajamyajax in response to Dolorous_Edd's comment.

  Re 213391329 from Ivan's list and HM's mention: well, the fit looks rather stellar. So whether this is could be a high impact gas giant or not depends on which stellar estimate you favor. With the Huber/NEA value of 0.28 R_sol the transiting object might be 5.5Re or more, if a grazing PC. A higher R_sol like my quick 0.77 calc nets you a 15Re object. So take your pick I suppose.

  s1=2469.54 p1=24.421 d1=0.197 (4.73 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213391329 , 2MASS J19233315-2935337 , 14.348 , 13.806 , 13.595 , 0.542 , 0.211 , ('K3V', 0.81) , ('M1V', 0.52)

  Semi-Major Axis a (A.U.) = 0.142
  
  Stellar diameter ratio = 0.77
  
  Stellar mass ratio = 0.6337
  
  Period ~= 24.422 days
  
  Duration ~= 4.7301 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213391329 290.8881 -29.5927 0.13 16.248 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213391329,2MASS J19233315-2935337,290.888134,-29.592722,3640.00,0.28,0.30,16.248,28.000,40.000,204.5±72.63

  Also noting an asteroid, glitch, or flare at 2533.51 BKJD with a duration ~= 0.45

  

  Posted May 24, 2016 11:55 PM

• by ajamyajax

  Re 219240689 from Hans Martin's and JKD's lists: probably a binary as mentioned; has only one long flat transit (not pictured). The star is considered a giant or subgiant by Huber/NEA at 8.98 R_sol. There are no signs of transit contamination in the nearby EPICs though.

  s1=2532.68 p1=? d1=1.64375 (38.5 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219240689 , 2MASS J19161979-1712499 , 12.388 , 11.853 , 11.720 , 0.535 , 0.133 , ('K3V', 0.81) , ('K6V', 0.7)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219240689 289.0825 -17.2139 0.07 14.121 7
  
  219239645 289.0920 -17.2162 33.69 13.850 7
  
  219234319 289.0878 -17.2282 54.65 13.692 7
  
  219232086 289.0897 -17.2332 73.80 15.605 7
  
  219252105 289.0634 -17.1880 114.02 17.357 7
  
  219225128 289.0942 -17.2491 133.00 14.097 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219240689,2MASS J19161979-1712499,289.082509,-17.213884,4953.00,8.98,0.90,14.121,-7.100,-3.700,3788±3282

  Posted May 26, 2016 1:02 PM

• by ajamyajax

  Re 217977895 from Hans Martin's list: a busy and interesting neighborhood, but this target could be a mini gas giant -> a Neptune planet candidate starting at 0.87 R_sol. The nearby EPICs did not show any obvious signs of other transits.

  s1=2481.365 p1=21.70 d1=0.18 (4.32 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217977895 , 2MASS J19093901-1937369 , 11.481 , 11.111 , 11.046 , 0.37 , 0.065 , ('G9V', 0.91) , ('F9V', 1.14)
  
  217976219 , 2MASS J19090821-1937479 , 14.520 , 13.543 , 12.915 , 0.977 , 0.628 , M , ('L2V', '...') , ('L2V', '...')
  
  218038089 , 2MASS J19091919-1931140 , 11.152 , 10.798 , 10.798 , 0.354 , 0.0 , K , ('G8V', 0.94) , ('B7V', 3.9)
  
  217930911 , 2MASS J19091291-1942355 , 10.765 , 10.527 , 10.460 , 0.238 , 0.067 , F , ('G0V', 1.09) , ('G0V', 1.09)
  

  au min-max 0.155 0.155
  
  stellar diameter in solar units min-max 0.85 0.885
  
  stellar mass in solar units min-max 1.055 1.055
  
  period in days min-max 21.7 21.7
  
  duration in hours min-max 4.235 4.41
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217977895 287.4126 -19.6269 0.16 12.745 7
  
  217974025 287.4209 -19.6338 37.52 13.177 7
  
  217935281 287.3394 -19.7022 367.35 11.968 7
  
  217976219 287.2842 -19.6300 435.42 15.902 7
  
  217999387 287.5402 -19.5889 453.96 11.980 7
  
  218038089 287.3300 -19.5206 474.33 12.285 7
  
  217930911 287.3038 -19.7099 474.52 11.854 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217977895,2MASS J19093901-1937369,287.412572,-19.626937,5645.00,1.75,1.04,12.745,-7.900,0.500,617.1±1022(?)
  
  217976219,2MASS J19090821-1937479,287.284218,-19.629990,3453.00,90.18,1.06,15.902,,7166±3458,
  
  218038089,2MASS J19091919-1931140,287.329974,-19.520558,5785.00,1.03,0.97,12.285,1.900,-30.000,324.4±152.3
  
  217930911,2MASS J19091291-1942355,287.303842,-19.709855,6289.00,2.18,1.49,11.854,-0.400,-6.300, 607.3±238.7
  

  Per VSX:
  
  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.62 Variable V1093 Sgr 000-BFF-550 19 09 41.00 -19 38 01.3 Sgr RRAB 0.6389498 13.1 - 14.4 p

  Per Simbad:
  36.90 arcsecs: V* V1093 Sgr -- Variable Star of RR Lyr type, 19 09 41.0 -19 38 01
  

  435.40 arcsecs: 2MASS J19090821-1937479 -- Brown Dwarf (M<0.08solMass) , Proper motions mas/yr: 54 148, Spectral type: L1, 19 09 08.21 -19 37 48.0 (J19090821-19374800)
  

  474.66 arcsecs: LHS 5344 -- High proper-motion Star, Proper motions mas/yr: -320 -364, Spectral type: M, 19 10 12.59 -19 37 19.5 (J19101259-1937195)

  

  Posted May 26, 2016 1:03 PM

• by ajamyajax

  Re 213220822 from Ivan's list: this periodic transit varies in depth and could be a blend. The star radii and mass estimates have a wide range also.

  s1=2469.705 p1=6.4835 d1=0.15 (3.6 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213220822 , 2MASS J19093171-3014277 , 13.886 , 13.223 , 12.974 , 0.663 , 0.249 , ('M7V', 0.098) , ('M2V', 0.5)

  au min-max 0.06 0.075
  
  stellar diameter in solar units min-max 0.91 1.2
  
  stellar mass in solar units min-max 0.685 1.34
  
  period in days min-max 6.479 6.493
  
  duration in hours min-max 3.5 3.698
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213220822 287.3821 -30.2410 0.07 16.297
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213220822,2MASS J19093171-3014277,287.382098,-30.241019,3764.00,0.36,0.39,16.297,41.200,6.300,223.8±50.89

  

  Posted May 26, 2016 1:06 PM

• by ajamyajax

  Re 217855533 from Hans Martin's list: this target doesn't seem to have any colors or NEA stellar information available, but this star is listed as an F7/F6 variable or subgiant. So using that for maybe 1.28 M_sol and with a radius starting there also, this could be a planet candidate up to ~8.7 R_sol.

  s1=2487.377 p1=21.591 d1=0.18 (4.32 hours +/-)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217855533 290.0518 -19.8431 0.08 10.043 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217855533,,290.051805,-19.843121,,,,10.043,-8.600,-13.800,

  Listed as HD 181196 -- Star on Simbad, Proper motions mas/yr: -8.6 -13.8, Spectral type: F5/6IV/V, 19 20 12.4380 -19 50 35.184

  

  Posted May 26, 2016 1:08 PM

• by ajamyajax

  Re 214669044 from Ivan's list and as Ivan mentioned: this target is contaminated from an EB only 89.48 arcsecs away. Also looks like this 8.707 Kepmag binary is contaminating nearby 214676535 as well, but that is all from this list.

  EB 214675496 ephemeris:
  
  s1=2475.51 p1=11.79 d1=0.33 (7.92 hours +/-)
  
  s2=2468.85 p2=11.79 d2=0.30 (7.2 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214669044 , 2MASS J19110204-2555346 , 11.757 , 11.639 , 11.630 , 0.118 , 0.009 , ('F0V', 1.58) , ('B8V', 3.4)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214669044 287.7586 -25.9263 0.14 12.398 7
  
  214675496 287.7368 -25.9110 89.39 8.707 7
  
  214676535 287.7333 -25.9084 104.09 17.164 7
  
  214683683 287.8391 -25.8909 290.24 16.820 7
  
  214668554 287.8699 -25.9275 360.50 15.915 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214669044,2MASS J19110204-2555346,287.758562,-25.926280,7841.00,2.06,1.84,12.398,0.300,0.600,1067±419.7

  From VSX:
  
  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  

  1.49 Variable V5570 Sgr -- 19 10 56.83 -25 54 39.6 Sgr EA 11.7902 8.60 - 9.05 V
  

  From Simbad 89.49 arcsecs: V* V5570 Sgr -- Eclipsing binary of Algol type (detached), Proper motions mas/yr: -2.8 -7.5, Spectral type: B9V, 19 10 56.8364 -25 54 39.593

  

  Posted May 26, 2016 8:48 PM

• by ajamyajax

  Re 214729274 from Ivan's list: also found was a neat small star eccentric binary. And 410.12 arcsecs away, 214729331 looks like a beautiful RR Lyr, as shown below.

  s1=2487.394 p1=25.376 d1=0.14 (3.36 hours)
  
  s2=2471.42 p2=25.376 d2=0.14 (3.36 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214729274 , 2MASS J19110270-2546527 , 11.794 , 11.142 , 10.987 , 0.652 , 0.155 , ('M7V', 0.098) , ('K6V', 0.7)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214729274 287.7613 -25.7813 0.13 13.715 7
  
  214775703 287.7451 -25.6721 396.72 10.369 7
  
  214729331 287.8878 -25.7812 410.12 16.081 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214729274,2MASS J19110270-2546527,287.761284,-25.781332,4185.00,0.53,0.60,13.715,20.200,-35.600,146.2±23.6

  
  

  From VSX:
  
  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable V0863 Sgr 000-BFF-342 19 11 33.08 -25 46 52.3 Sgr RRAB 0.5156861 15.1 - 15.7 p
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=28563

  Posted May 26, 2016 8:51 PM

• by ajamyajax

  Re 217274918 from Hans Martin's list: a decent chance of a mini-Neptune planet candidate, if we can keep the stellar estimate on the small side around 0.76 R_sol. Another giant or subgiant is also possible, but didn't see any sign of this in the transit anyway. The nearby EPIC shows no sign of transit contamination but of course that is still possible here.

  s1=2476.5 p1=25.62 d1=0.19 (4.56 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217274918 , 2MASS J18555772-2051434 , 12.271 , 11.759 , 11.562 , 0.512 , 0.197 , ('K3V', 0.81) , ('K9V', 0.6)

  au min-max 0.135 0.175
  
  stellar diameter in solar units min-max 0.665 0.89
  
  stellar mass in solar units min-max 0.5 1.09
  
  period in days min-max 25.611 25.622
  
  duration in hours min-max 4.464 4.652
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217274918 283.9905 -20.8621 0.20 14.034 7
  
  217295838 283.9889 -20.8251 133.15 14.194 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217274918,2MASS J18555772-2051434,283.990533,-20.862055,4926.00,9.59,0.94,14.034,4.300,2.600,3622±688.6

  

  Posted May 28, 2016 1:47 PM

• by ajamyajax

  Re 214918279 from Ivan's list: a nice periodic brightening event here with A-type or hotter components, so this one could be a heartbeat binary candidate. Note the similar proper motion neighbor, so seems like these could be companions whether they are eclipsing or not.

  s1=2469.74 p1=3.285 d1=1.25 (30.0 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214918279 , 2MASS J19162390-2520318 , 8.430 , 8.448 , 8.439 , -0.018 , 0.009 , ('A1V', 2.2) , ('B8V', 3.4)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214918279 289.0996 -25.3422 0.10 8.744 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214918279,2MASS J19162390-2520318,289.099602,-25.342171,9526.00,2.07,2.29,8.744,-1.200,-17.800,288.5±102.5

  Listed as HD 180132 -- Star on Simbad, Proper motions mas/yr: -1.2 -17.8, Spectral type: B9/A0V
  
  And 21.50 arcsecs away: CD-25 13879 -- Star, Proper motions mas/yr: -0.1 -17.1, Spectral type: A0, 19 16 22.6097 -25 20 19.492

  
  

  Credit: Aladin Lite

  Posted May 28, 2016 1:50 PM

• by ajamyajax

  Re 213455199 from Ivan's list: maybe a very eccentric binary here with two stars of similar size. Although none of the nearby EPICs show any sign of these transits.

  s1=2540.06 p1=? d1=1.3 (31.2 hours)
  
  s2=2548.905 p2=? d2=1.35 (32.4 hours)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213455199 , 2MASS J19191556-2921496 , 12.119 , 11.608 , 11.470 , 0.511 , 0.138 , ('K3V', 0.81) , ('K6V', 0.7)

  From NEA, K2 Targets within search area:
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  213455199 289.8149 -29.3638 0.11 13.745 7
  
  213457213 289.8396 -29.3564 82.06 12.307 7
  
  213458704 289.8452 -29.3512 105.44 12.592 7
  
  213460379 289.7867 -29.3454 110.44 10.683 7
  
  213462874 289.7834 -29.3367 138.80 12.752 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213455199,2MASS J19191556-2921496,289.814864,-29.363799,4980.00,9.79,0.92,13.745,2.300,2.300,3555±470.6

  

  Posted May 30, 2016 7:06 PM

• by ajamyajax

  Re 213063050 from Ivan's list: this appears to be the second star in a double system and could be RR Lyr contamination per the MAST data anyway. No other possible transits were evident though.

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213063050 , 2MASS J19044408-3056456 , 10.767 , 10.536 , 10.514 , 0.231 , 0.022 , ('F8V', 1.18) , ('B9.5V', 2.5)
  
  213062557 , 2MASS J19044515-3056552 , 8.629 , 8.607 , 8.600 , 0.022 , 0.007 , ('A4V', 1.91) , ('B8V', 3.4)

  From NEA, K2 Targets within search area:
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  213063050 286.1837 -30.9460 0.02 11.744 7
  
  213062557 286.1882 -30.9486 16.75 8.859 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213063050,2MASS J19044408-3056456,286.183696,-30.946006,6456.00,1.66,1.40,11.744,-10.100,-2.900,476.5±230.2
  
  213062557,2MASS J19044515-3056552,286.188157,-30.948648,9368.00,2.92,2.64,8.859,-1.500,-8.000,445.5±188.1

  On Simbad 3.79 arcsecs away: CD-31 16312B -- Star in double system, Spectral type: B7V, 19 04 44.0 -30 56 42
  
  16.69 arcsecs away HD 177138 -- Star, Proper motions mas/yr: -1.5 -8.0, Spectral type: B9IV, 19 04 45.1538 -30 56 55.124

  

  Posted May 30, 2016 7:07 PM

• by ajamyajax

  Re 217106897 from Hans Martin's list: a possible but intriguing multi-planet system, with the P=21.5x object maybe showing significant TTV with periods intervals from ~21.445-21.63 days. Also limited data but if generally correct that means a larger unseen third object could be perturbing its orbit the most as it is 'sandwiched' between two or more other masses..

  This could be similar to PH's confirmed Kepler-289 d (KIC 7303287/KOI 1353), but the narrower TTV range here suggests a smaller or more distant outer planet more likely than the Jupiter in the Kepler-289 system. But will work on that some more later.

  http://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=Kepler-289+d&type=CONFIRMED_PLANET

  Also and not shown -- both fits here are very blended or high-impact, but the smaller object could be a super-Earth and the middle object a mini-Neptune if a smaller 0.77 R_sol star. Once again there is no transit evidence to support a giant or subgiant star here except for possible contamination. But with that considered, this system could make for an interesting follow-up.

  s1=2473.28 p1=21.523 d1=0.175 (4.2 hours +/-)
  
  s2=2475.484 p2=15.49 d2=0.1567 (3.76 hours +/-)
  

  ttv1 = [2473.28,2494.77,2516.214,2537.845]
  
  ttv2 = [2475.484,2490.97,2506.46,2521.956]

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217106897 , 2MASS J18460076-2109354 , 10.211 , 9.910 , 9.741 , 0.301 , 0.169 , ('G3V', 1.0) , ('K7V', 0.64)

  Semi-Major Axis a (A.U.) = 0.141
  
  Stellar diameter ratio = 0.77
  
  Stellar mass ratio = 0.8
  
  Period ~= 21.529 days
  
  Duration ~= 4.1964 hours
  

  Semi-Major Axis a (A.U.) = 0.113
  
  Stellar diameter ratio = 0.77
  
  Stellar mass ratio = 0.8
  
  Period ~= 15.491 days
  
  Duration ~= 3.7604 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217106897 281.5032 -21.1599 0.13 11.787 7
  
  217114168 281.5346 -21.1471 115.09 14.162 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217106897,2MASS J18460076-2109354,281.503175,-21.159872,5483.00,3.26,1.53,11.787,9.100,-8.100,581.7±129.7

  
  

  Posted May 30, 2016 7:11 PM

• by ajamyajax

  Re 217026897 from Hans Martin's list: this target looks an interesting eccentric binary with possible ETV, but they are faint -- so blending could be a factor. But there might be a third companion star here also.

  s1=2472.49 p1=10.816 d1=0.1625 (3.9 hours +/-)
  
  s2=2478.875 p2=10.816 d2=0.1625 (3.9 hours +/-)
  

  ttv1 = [2472.49,2483.29,2494.12,2504.945,2515.725,2526.563,2537.403,2548.191]
  
  ttv2 = [2478.875,2489.691,2500.507,2511.313,2522.11,2532.905,2543.735]

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217026897 , 2MASS J18442366-2118025 , 11.510 , 11.109 , 11.021 , 0.401 , 0.088 , ('K0V', 0.89) , ('G9V', 0.91)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217026897 281.0986 -21.3007 0.11 13.321 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217026897,2MASS J18442366-2118025,281.098574,-21.300719,5443.00,0.88,0.90,13.321,-17.000,-35.300,303.1±360.7

  Per Simbad 110.81 arcsecs away: C* 2646 -- Carbon Star, 18 44 16.8 -21 18 58

  

  Note the above transits not corrected or aligned for ETV as shown.

  Posted June 1, 2016 4:03 PM

• by ajamyajax

  Re 213669594 from Ivan's list: not shown but a fair number of RR Lyrae in the vicinity, so contamination seems likely. MAST data does show more variation here but still not very clean. Also nearby 213673071 shows similar possible contamination. Nearby 213677234 has more detail, so could be contamination from a close source or is the real thing.

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213669594 , 2MASS J18474163-2838392 , 16.564 , 17.143 , 17.023 , -0.579 , 0.12 , ('', 0.0) , ('K3V', 0.81)

  From NEA, K2 Targets within search area:
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  213669594 281.9235 -28.6442 0.21 18.109 7
  
  213673071 281.8995 -28.6329 86.02 17.536 7
  
  213677234 281.9388 -28.6194 101.73 17.706 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213669594,2MASS J18474163-2838392,281.923460,-28.644245,,,,18.109,,,

  Per VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable [CAG2000] vs3f268 -- 18 47 41.64 -28 38 39.0 Sgr RRAB 0.57974 19.3 (0.92) B
  
  1.49 Variable [CAG2000] vs6f268 -- 18 47 35.81 -28 37 53.9 Sgr RRAB 0.52893 19.3 (1.06) B
  
  1.66 Variable [CAG2000] vs2f268 -- 18 47 45.43 -28 37 12.7 Sgr RRAB 0.51213 19.4 (1.30) B
  
  3.52 Variable [CAG2000] vs7f268 -- 18 47 25.64 -28 38 25.5 Sgr RRAB 0.45831 19.2 (1.63) B
  
  5.39 Variable [CAG2000] vs9f240 -- 18 48 01.12 -28 41 56.6 Sgr RRAB 0.60867 19.4 (0.88) B
  
  6.78 Variable [CAG2000] vs5f268 -- 18 47 46.45 -28 45 20.7 Sgr RRAB 0.66194 19.2 (0.55) B
  
  8.99 Variable [CAG2000] vs4f240 -- 18 48 22.53 -28 38 09.1 Sgr RRAB 0.55732 19.4 (0.93) B
  

  And listed at this location:

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=209185

  Posted June 1, 2016 4:06 PM

• by ajamyajax

  Re 216892056 from Hans Martin's list: sparse data but a smaller planet candidate seems possible here. Also note this is a relatively near by high proper-motion target. 0.5 R_sol shown for this PC radius estimate, but a smaller dwarf is possible. And no obvious sign of a secondary transit.

  s1=2470.05 p1=2.78552 d1=0.06875 (1.65 hours or less)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216892056 , 2MASS J19264156-2132203 , 9.971 , 9.372 , 9.129 , 0.599 , 0.243 , ('K5V', 0.75) , ('M2V', 0.5)

  au min-max 0.03 0.035
  
  stellar diameter in solar units min-max 0.47 0.615
  
  stellar mass in solar units min-max 0.465 0.74
  
  period in days min-max 2.78 2.79
  
  duration in hours min-max 1.552 1.745
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216892056 291.6732 -21.5391 0.17 12.503 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216892056,2MASS J19264156-2132203,291.673196,-21.539054,3591.00,0.29,0.29,12.503,36.600,-226.400,30.35±24.12

  Listed as LP 869-4 -- High proper-motion Star on Simbad, Proper motions mas/yr: 36 -226, 19 26 41.56 -21 32 20.3

  
  

  Posted June 1, 2016 4:10 PM

• by ajamyajax

  Re 216876207 from Hans Martin's list: fairly wide range of stellar estimates here, but they are all small dwarfs so a blended planet candidate seems possible from a mini to a super-Neptune perhaps. That is the 0.65 R_sol estimate as shown for this model fit.

  s1=2474.629 p1=32.31 d1=0.175 (4.2 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216876207 , 2MASS J18455344-2134025 , 13.800 , 13.314 , 13.064 , 0.486 , 0.25 , ('K2V', 0.85) , ('M2V', 0.5)

  au min-max 0.175 0.18
  
  stellar diameter in solar units min-max 0.625 0.67
  
  stellar mass in solar units min-max 0.685 0.745
  
  period in days min-max 32.307 32.316
  
  duration in hours min-max 4.107 4.281
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216876207 281.4727 -21.5674 0.13 15.646 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216876207,2MASS J18455344-2134025,281.472667,-21.567383,3534.00,0.24,0.24,15.646,,,133.6±7039(?)

  

  Posted June 3, 2016 5:12 PM

• by ajamyajax

  Re 216766690 from Hans Martin's list: this target appears to be a giant or subgiant with a small stellar companion, but also there is an interesting possible "limb brightening" effect here also. It could be caused by limited and sparse data however.

  s1=2494.876 p1=38.364 d1=0.49 (11.76 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216766690 , 2MASS J18544771-2145455 , 11.086 , 10.279 , 10.075 , 0.807 , 0.204 , ('L2V', '...') , ('M1V', 0.52)

  au min-max 0.27 0.32
  
  stellar diameter in solar units min-max 2.31 2.775
  
  stellar mass in solar units min-max 1.785 2.97
  
  period in days min-max 38.355 38.37
  
  duration in hours min-max 11.669 11.856
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216766690 283.6988 -21.7627 0.19 13.466 7
  
  216754815 283.7148 -21.7839 93.25 14.126 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216766690,2MASS J18544771-2145455,283.698837,-21.762659,4087.00,31.57,1.01,13.466,0.900,6.900,5366±2564

  

  Posted June 3, 2016 5:14 PM

• by ajamyajax

  Re 214834031 from Ivan's list: a nice planetary fit here I think, but this target is also surrounded by visible companions. Many of which are listed below as 2MASS objects also. But at least none of the nearby EPICs show this transit. So a PC is possible but ruling out an eclipsing binary could take some effort. An alternating fit at the half period seemed inconclusive though.

  s1=2469.54 p1=1.3528 d1=0.1145833 (2.75 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214834031 , 2MASS J18455100-2532102 , 10.889 , 10.282 , 10.151 , 0.607 , 0.131 , ('K6V', 0.7) , ('K6V', 0.7)

  au min-max 0.025 0.025
  
  stellar diameter in solar units min-max 1.435 1.54
  
  stellar mass in solar units min-max 1.125 1.155
  
  period in days min-max 1.343 1.361
  
  duration in hours min-max 2.781 2.945
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214834031 281.4625 -25.5362 0.06 12.809 7
  
  214835068 281.4515 -25.5338 36.78 13.619 7
  
  214837257 281.4739 -25.5288 45.56 13.642 7
  
  214840802 281.4641 -25.5204 57.06 12.972 7
  
  214840694 281.4874 -25.5206 98.42 13.720 7
  
  214842796 281.4346 -25.5157 116.87 14.328 7
  
  214819352 281.4593 -25.5702 122.90 13.282 7
  

  From NEA, 2MASS Objects within search area:
  
  2MASS Designation RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] J [mag] V or R [mag] Photometric flags
  
  18455100-2532102 281.462505 -25.536182 0.02 10.889 11.10 AAA
  
  18455077-2532165 281.461567 -25.537922 6.96 15.914 null CCU
  
  18455116-2532016 281.463167 -25.533785 8.90 12.838 null AAA
  
  18455045-2532165 281.460221 -25.537922 9.71 14.865 null AUU
  
  18455160-2532156 281.465002 -25.537691 9.75 14.064 null AAA
  
  18455038-2532154 281.459926 -25.537617 9.85 14.531 null UAB
  
  18455199-2532127 281.466637 -25.536875 13.64 16.430 17.80 BUU
  
  18454970-2532155 281.457094 -25.537666 18.38 16.047 17.40 ABC
  
  18454915-2532125 281.454828 -25.536814 25.05 14.254 14.90 AAA
  
  18455023-2531446 281.459324 -25.529064 27.64 16.111 17.50 AAU
  
  18455039-2532367 281.459973 -25.543528 27.69 16.317 null BBD
  
  18454897-2532187 281.454071 -25.538548 28.70 14.946 17.00 AAA
  
  18455319-2532168 281.471661 -25.538010 30.45 14.401 16.50 AAA
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214834031,2MASS J18455100-2532102,281.462509,-25.536185,4377.00,0.59,0.67,12.809,-25.100,-35.900,111.4±35.87

  

  Posted June 3, 2016 5:16 PM

• by ajamyajax

  Re 216166748 from Hans Martin's list: also has small visual companions nearby, but another chance for a PC even with a larger star. A ~0.83 R_sol estimate yields a 2.01 Re object (shown) while 2.35 R_sol produces a super-Neptune class planet perhaps.

  s1=2470.365 p1=19.68 d1=0.18 (4.32 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216166748 , 2MASS J19274127-2250263 , 10.771 , 10.466 , 10.355 , 0.305 , 0.111 , ('G3V', 1.0) , ('K4V', 0.78)

  au min-max 0.12 0.145
  
  stellar diameter in solar units min-max 0.725 0.91
  
  stellar mass in solar units min-max 0.595 1.05
  
  period in days min-max 19.681 19.684
  
  duration in hours min-max 4.227 4.408
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216166748 291.9220 -22.8407 0.10 11.884 7
  

  From NEA, 2MASS Objects within search area:
  
  2MASS Designation RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] J [mag] V or R [mag] Photometric flags
  
  19274127-2250263 291.921974 -22.840639 0.14 10.771 11.40 AAA
  
  19274151-2250295 291.922996 -22.841551 4.61 13.120 11.40 AAA
  
  19274207-2250207 291.925310 -22.839098 12.41 16.813 17.90 CCD
  
  19274048-2250165 291.918698 -22.837933 14.71 14.554 14.10 AAA
  
  19274142-2250444 291.922589 -22.845678 18.12 16.472 17.20 BCD
  
  19274209-2250115 291.925397 -22.836535 18.72 14.496 15.40 AAA
  
  19274019-2250144 291.917483 -22.837349 19.14 15.784 14.10 AAB
  
  19273982-2250248 291.915946 -22.840233 20.09 16.210 16.70 ACC
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216166748,2MASS J19274127-2250263,291.921983,-22.840676,5746.00,2.35,1.14,11.884,7.200,-4.600,587±1122(?)

  From Simbad 146.38 arcsecs away: IRAS 19247-2254 -- Infra-Red source

  

  Posted June 3, 2016 5:18 PM

• by ajamyajax

  Re 215626177 from Ivan's list and HM's mention: kind of V-shaped but this target appears to be an F-type star that could host a "hot Neptune" planet candidate. The radii estimate shown is for 1.18 R_sol star but once again a PC will work within all values or ranges here, including the 1.45 R_sol from Huber/NEA. And nearby 215608579 showed no obvious signs of this transit.

  s1=2470.12 p1=2.07671 d1=0.12 (2.88 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215626177 , 2MASS J19174416-2350512 , 11.935 , 11.625 , 11.569 , 0.31 , 0.056 , ('G6V', 0.97) , ('F5V', 1.32)

  au min-max 0.035 0.035
  
  stellar diameter in solar units min-max 1.315 1.415
  
  stellar mass in solar units min-max 1.315 1.335
  
  period in days min-max 2.07 2.086
  
  duration in hours min-max 2.784 2.98
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215626177 289.4340 -23.8476 0.09 12.964 7
  
  215608579 289.4451 -23.8796 120.94 15.510 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215626177,2MASS J19174416-2350512,289.434006,-23.847575,6097.00,1.45,1.10,12.964,7.900,1.600,658.8±261.5

  On Simbad:
  
  202.09 arcsecs away: PMN J1917-2348 -- Radio-source, 19 17 53.50 -23 48 15.1
  
  333.78 arcsecs away: V* TY Sgr -- Variable Star of Mira Cet type, 9.0 -3.3, Spectral type: M3e, 19 17 42.822 -23 56 24.64

  

  Posted June 5, 2016 2:57 PM

• by ajamyajax

  Re 216111905 from Hans Martin's list: well this target could be binary contamination based on an alternating fit at the half period, but it sure is blended.

  s1=2468.47 p1=3.0193 d1=0.11 (2.64 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216111905 , 2MASS J18452250-2256243 , 11.503 , 11.078 , 10.998 , 0.425 , 0.08 , ('K1V', 0.86) , ('G6V', 0.97)

  au min-max 0.035 0.045
  
  stellar diameter in solar units min-max 0.83 1.15
  
  stellar mass in solar units min-max 0.625 1.34
  
  period in days min-max 3.012 3.025
  
  duration in hours min-max 2.541 2.74
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216111905 281.3438 -22.9401 0.13 13.171 7
  
  216122313 281.3451 -22.9211 68.53 13.193 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216111905,2MASS J18452250-2256243,281.343762,-22.940095,5221.00,0.83,0.88,13.171,-3.800,-29.100,268.5±448.1(?)

  

  Posted June 5, 2016 2:58 PM

• by ajamyajax

  Re 216008129 from Hans Martin's list: sparse data with only two good transit events of three (the last two), but a possible PC could be here of maybe 2.36Re at 0.64 R_sol. It is indicated as a giant or subgiant at 7.69 R_sol by Huber/NEA however. And with a smooth LC the odds might favor that.

  s1=2486.80 p1=22.77 d1=0.15 (3.6 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216008129 , 2MASS J19341458-2307518 , 10.653 , 10.273 , 10.198 , 0.38 , 0.075 , ('G9V', 0.91) , ('G3V', 1.0)

  au min-max 0.12 0.145
  
  stellar diameter in solar units min-max 0.52 0.66
  
  stellar mass in solar units min-max 0.445 0.785
  
  period in days min-max 22.76 22.776
  
  duration in hours min-max 3.51 3.688
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216008129 293.5607 -23.1310 0.19 11.966 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216008129,2MASS J19341458-2307518,293.560744,-23.131034,5736.00,7.69,0.83,11.966,-3.000,-38.600,1666±49.97

  Listed as TYC 6889-1358-1 -- Star on Simbad, Proper motions mas/yr: -3.0 -38.6, 19 34 14.579 -23 07 51.73

  

  Posted June 5, 2016 3:00 PM

• by ajamyajax

  Re 215854715 from Hans Martin's list: another possible mini gas giant planet candidate with a K-dwarf size star or slightly more. 0.83 R_sol for the PC radius estimate. And the alternating fits appear to be even. Also the two nearby EPICs show no obvious sign of this transit.

  s1=2477.105 p1=11.115 d1=0.145833 (3.5 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215854715 , 2MASS J19324838-2324540 , 11.247 , 10.802 , 10.745 , 0.445 , 0.057 , ('K3V', 0.81) , ('F6V', 1.25)

  au min-max 0.095 0.1
  
  stellar diameter in solar units min-max 0.82 0.91
  
  stellar mass in solar units min-max 0.925 1.08
  
  period in days min-max 11.114 11.12
  
  duration in hours min-max 3.416 3.6
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215854715 293.2016 -23.4150 0.10 12.611 7
  
  215861293 293.2016 -23.4028 43.99 16.946 7
  
  215864012 293.1973 -23.3978 63.61 11.547 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215854715,2MASS J19324838-2324540,293.201620,-23.415019,5211.00,0.83,0.90,12.611,13.500,-33.000,237.6±336.1(?)

  

  Posted June 5, 2016 3:04 PM

• by ajamyajax

  Re 215364084 from Hans Martin's list: a longer duration transit here suggests either a binary or an evolved star of at least 1.77 R_sol. More visual neighbors could add some blending, so my guess is a somewhat larger star with a planet candidate in the sub-Saturn range. But 0.61 R_sol per Huber/NEA would be a mini gas giant planet candidate, so still a possible PC if the transit belongs to this star. And none of the nearby EPICs show any sign of this transit. Edit: And the alternating fit shown here might indicate a blended binary, but it's very close either way.

  s1=2467.23 p1=2.7438 d1=0.16 (3.84 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215364084 , 2MASS J18460309-2422271 , 11.858 , 11.353 , 11.176 , 0.505 , 0.177 , ('K3V', 0.81) , ('K7V', 0.64)

  au min-max 0.045 0.045
  
  stellar diameter in solar units min-max 1.72 1.82
  
  stellar mass in solar units min-max 1.605 1.625
  
  period in days min-max 2.735 2.752
  
  duration in hours min-max 3.743 3.94
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215364084 281.5129 -24.3742 0.10 13.535 7
  
  215365198 281.5047 -24.3718 28.16 14.800 7
  
  215368033 281.5070 -24.3659 35.49 12.962 7
  
  215356676 281.5170 -24.3899 58.19 13.713 7
  
  215357353 281.4928 -24.3884 83.42 13.719 7
  
  215362408 281.4834 -24.3778 97.55 13.630 7
  
  215369749 281.4805 -24.3622 114.61 13.313 7
  
  215360036 281.4705 -24.3829 142.48 11.911 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215364084,2MASS J18460309-2422271,281.512883,-24.374176,4461.00,0.61,0.69,13.535,-32.300,-13.400,184.2±36.33

  

  Posted June 7, 2016 6:15 PM

• by ajamyajax

  Re 215169384 from Hans Martin's list: appears to be a shallow transiting and slightly eccentric binary, nicely visible in Andrew's more corrected data. Nearby 215177411 does not show any sign of these transits.

  s1=2489.377 p1=40.61 d1=0.21 (5.04 hours +/-)
  
  s2=2508.61 p2=40.61 d2=0.21 (5.04 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215169384 , 2MASS J19042154-2447180 , 11.550 , 11.231 , 11.169 , 0.319 , 0.062 , ('G5V', 0.98) , ('F8V', 1.18)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215169384 286.0898 -24.7883 0.19 12.690 7
  
  215177411 286.1211 -24.7713 119.38 11.828 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215169384,2MASS J19042154-2447180,286.089769,-24.788345,5982.00,1.45,1.11,12.690,9.200,0.100,557±253.7

  From Simbad 166.94 arcsecs away: 2MASS J19043048-2445235 -- High proper-motion Star, 185.333 -172.222, 19 04 30.484 -24 45 23.55

  

  Posted June 7, 2016 6:16 PM

• by ajamyajax

  Re 215090200 from Hans Martin's list: said to be a 11.57 R_sol giant or subgiant, but another one that could be planetary with a smaller star. There might be faint contamination in the nearest EPICs listed below/maybe from a brighter source, but no specific evidence of that was found within the NEA maximum search range of 600 arcsecs.

  s1=2469.40 p1=2.48297 d1=0.15 (3.6 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  215090200 , 2MASS J18432108-2457361 , 9.841 , 9.227 , 9.057 , 0.614 , 0.17 , ('K6V', 0.7) , ('K7V', 0.64)

  au min-max 0.04 0.04
  
  stellar diameter in solar units min-max 1.58 1.68
  
  stellar mass in solar units min-max 1.375 1.395
  
  period in days min-max 2.474 2.492
  
  duration in hours min-max 3.5 3.698
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215090200 280.8379 -24.9600 0.20 11.846 7
  
  215088328 280.8342 -24.9643 19.43 13.334 7
  
  215079599 280.8569 -24.9834 104.56 12.843 7
  
  215096539 280.8661 -24.9462 104.79 13.626 7
  
  215078905 280.8608 -24.9849 116.68 13.987 7
  
  215077357 280.8644 -24.9884 133.88 12.917 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  215090200,2MASS J18432108-2457361,280.837858,-24.960042,4596.00,11.57,1.41,11.846,-0.300,-12.100,1351±254

  From Simbad 69.30 arcsecs away: PMN J1843-2457 -- Radio-source, 18 43 16.0 -24 57 36

  

  Posted June 7, 2016 6:18 PM

• by ajamyajax

  Re 214703698 from Ivan's list: looks like an EB or one is in range, as best seen in minimally corrected data. Nearby 214710697 shows no sign of these transits.

  s1=2468.989 p1=2.11002 d1=0.15 (3.6 hours +/-)
  
  s2=2470.044 p2=2.11002 d2=0.15 (3.6 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214703698 , 2MASS J18441314-2550348 , 12.235 , 11.654 , 11.498 , 0.581 , 0.156 , ('K5V', 0.75) , ('K6V', 0.7)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214703698 281.0548 -25.8430 0.08 14.084 7
  
  214710697 281.0482 -25.8259 65.18 13.119 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214703698,2MASS J18441314-2550348,281.054779,-25.843011,4748.00,8.87,1.00,14.084,-11.800,-1.000,3133±1892

  From Simbad:

  76.19 arcsecs away: 1RXS J184412.3-254919 -- X-ray source, 18 44 12.298 -25 49 19.49
  
  273.52 arcsecs away, CCDM J18443-2546AB -- Double or multiple star, Spectral type: K1III, 18 44 16.9 -25 46 06
  
  453.02 arcsecs away, CCDM J18447-2548AB -- Double or multiple star, Spectral type: F7/8V, 18 44 44.45223 -25 47 51.6710

  
  

  Posted June 8, 2016 2:23 AM

• by ajamyajax

  Re 216439618 from Hans Martin's list: as mentioned by HM, there is a small secondary transit here that indicates a blended binary. The two nearby EPICs show no sign of this transit. Also 216437161 is indicated as a sizable 48.62 R_sol giant; the LC is smooth in appearance.

  s1=2469.10 p1=3.7239 d1=0.14 (3.36 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216439618 , 2MASS J18540793-2220424 , 12.395 , 11.819 , 11.684 , 0.576 , 0.135 , ('K5V', 0.75) , ('K6V', 0.7)

  au min-max 0.045 0.055
  
  stellar diameter in solar units min-max 1.11 1.435
  
  stellar mass in solar units min-max 0.875 1.605
  
  period in days min-max 3.717 3.73
  
  duration in hours min-max 3.261 3.459
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216439618 283.5331 -22.3451 0.09 13.974 7
  
  216442097 283.5223 -22.3408 39.11 14.225 7
  
  216437161 283.5556 -22.3495 76.63 13.421 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216439618,2MASS J18540793-2220424,283.533078,-22.345116,4852.00,9.49,0.91,13.974,-6.400,6.500,3940±2644
  
  216442097,2MASS J18540534-2220269,283.522294,-22.340822,4934.00,2.15,1.02,14.225,14.900,4.900,1024±344.7
  
  216437161,2MASS J18541334-2220583,283.555639,-22.349547,3940.00,48.62,0.99,13.421,10.000,-2.800,7037±3014

  On Simbad, 224.84 arcsecs away, V* V5545 Sgr -- Semi-regular pulsating Star , 18 53 52.84 -22 22 03.9

  Also noting 216442097 has a flare or inverse transit type event at 2475.59 with a duration of 0.25 BKJD.

  

  Posted June 8, 2016 2:26 AM

• by ajamyajax

  Re 213601365 from Ivan's list and HM's mention: the added features noticed could be artifacts of the more corrective software, as minimally changed data only shows a regular but deep transit eccentric binary is likely here. And none of the nearby EPICs show either of these transits.

  s1=2502.955 p1=? d1=0.65 (15.6 hours +/-)
  
  s2=2471.60 p2=71.26 d2=1.85 (44.4 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213601365 , 2MASS J19211835-2851585 , 9.815 , 9.720 , 9.656 , 0.095 , 0.064 , ('A9V', 1.66) , ('F9V', 1.14)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213601365 290.3265 -28.8663 0.10 10.444 7
  
  213595642 290.3138 -28.8851 78.70 13.747 7
  
  213593495 290.2938 -28.8923 139.27 13.357 7
  
  213612948 290.3364 -28.8280 141.29 11.636 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213601365,2MASS J19211835-2851585,290.326488,-28.866274,7609.00,2.25,1.88,10.444,7.500,-4.500,502.9±227.3

  Listed as CD-29 16020 -- Star on Simbad, Proper motions mas/yr: 7.5 -4.5, 19 21 18.3605 -28 51 58.610

  

  Posted June 8, 2016 2:28 AM

• by ajamyajax

  Re 216562832 from Hans Martin's list: this target seems to be a blended binary with an alternating fit showing a small secondary transit.

  s1=2468.599 p1=0.59907 d1=0.10 (2.4 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216562832 , 2MASS J19255149-2207303 , 14.566 , 14.203 , 14.116 , 0.363 , 0.087 , ('G8V', 0.94) , ('G8V', 0.94)

  au min-max 0.015 0.015
  
  stellar diameter in solar units min-max 1.595 1.725
  
  stellar mass in solar units min-max 1.215 1.295
  
  period in days min-max 0.59 0.609
  
  duration in hours min-max 2.3 2.413
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216562832 291.4646 -22.1251 0.18 15.818 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216562832,2MASS J19255149-2207303,291.464582,-22.125146,5845.00,1.18,0.98,15.818,-7.400,-1.500,1796±783.3

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  4.52 Variable ASAS J192535-2205.3 -- 19 25 34.49 -22 05 17.6 Sgr MISC 47.157452 13.16 (0.34) V

  

  Posted June 12, 2016 3:40 PM

• by ajamyajax

  Re 216579956 from Hans Martin's list: and an interesting system that appears to be a blended close or contact binary as seen in this MAST data fit, but a chance this is an inflated HJ even with the deeper min corrected data fit that is interacting with the star's corona or something of that sort.

  0.95 R_sol estimate or a bit larger. Also neither of the two nearby EPICs show any sign of this transit.

  s1=2468.80 p1=0.705771 d1=0.08 (1.61 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216579956 , 2MASS J19132080-2205404 , 14.431 , 14.122 , 14.021 , 0.309 , 0.101 , ('G4V', 0.99) , ('K3V', 0.81)

  au min-max 0.015 0.015
  
  stellar diameter in solar units min-max 0.89 1.035
  
  stellar mass in solar units min-max 0.88 0.93
  
  period in days min-max 0.696 0.715
  
  duration in hours min-max 1.51 1.71
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216579956 288.3368 -22.0946 0.10 15.188 7
  
  216573011 288.3173 -22.1069 78.61 17.879 7
  
  216578383 288.3672 -22.0972 101.93 12.873 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216579956,2MASS J19132080-2205404,288.336770,-22.094596,6023.00,1.39,1.11,15.188,-0.300,2.300,1960±553.3

  
  

  Posted June 12, 2016 3:42 PM

• by ajamyajax

  Re 216915207 from Hans Martin's list: also an interesting and possible close or contact binary as seen in the MAST data, and with two very small dwarfs too.

  s1=2468.78 p1=0.54749 d1=0.0333 (0.8 hours +/-) --> or an interval of this period

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216915207 , 2MASS J19244405-2129511 , 13.798 , 13.246 , 12.987 , 0.552 , 0.259 , ('K4V', 0.78) , ('M3V', 0.4)

  au min-max 0.01 0.01
  
  stellar diameter in solar units min-max 0.355 0.465
  
  stellar mass in solar units min-max 0.43 0.46
  
  period in days min-max 0.539 0.557
  
  duration in hours min-max 0.702 0.897
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216915207 291.1836 -21.4975 0.21 15.892
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216915207,2MASS J19244405-2129511,291.183552,-21.497538,3532.00,0.24,0.24,15.892,,,129.8±51.88

  

  Posted June 12, 2016 3:43 PM

• by ajamyajax

  Re 218712024 from Hans Martin's list: this target could have a grazing HJ if an F-type star 1.23 or anything near the 1.54 R_sol Huber/NEA value as shown. The only negative could be some sign of an offset in a V-shaped alternating fit.

  s1=2468.895 p1=0.618757 d1=0.0725 (1.74 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218712024 , 2MASS J19115411-1817516 , 10.986 , 10.725 , 10.633 , 0.261 , 0.092 , ('G0V', 1.09) , ('K0V', 0.89)

  au min-max 0.015 0.015
  
  stellar diameter in solar units min-max 1.06 1.23
  
  stellar mass in solar units min-max 1.14 1.215
  
  period in days min-max 0.609 0.628
  
  duration in hours min-max 1.58 1.778
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218712024 287.9756 -18.2976 0.17 12.033
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218712024,2MASS J19115411-1817516,287.975594,-18.297648,6124.00,1.54,1.23,12.033,16.200,10.000,466±247.2

  

  Posted June 15, 2016 2:48 AM

• by ajamyajax

  Re 219420915 from Hans Martin's list: although a V-shaped fit, this target doesn't show any sign of a secondary and could still be a planet candidate up to ~1.5 R_sol. And nearby 219415928 didn't shown any sign of this transit.

  s1=2468.544 p1=0.515031 d1=0.07167 (1.72 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219420915 , 2MASS J19100261-1647365 , 11.601 , 11.251 , 11.135 , 0.35 , 0.116 , ('G8V', 0.94) , ('K3V', 0.81)

  au min-max 0.015 0.015
  
  stellar diameter in solar units min-max 1.31 1.515
  
  stellar mass in solar units min-max 1.635 1.765
  
  period in days min-max 0.505 0.525
  
  duration in hours min-max 1.631 1.82
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219420915 287.5109 -16.7935 0.08 12.847 7
  
  219415928 287.5275 -16.8052 71.11 14.842 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219420915,2MASS J19100261-1647365,287.510877,-16.793496,5753.00,1.02,0.94,12.847,-8.500,-27.200,378.5±227

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  5.33 Variable ASAS J190945-1644.4 -- 19 09 44.79 -16 44 24.9 Sgr MISC 23.08083 11.17 (0.12) V

  From Simbad 291.23 arcsecs away: TYC 6283-1034-1 -- Possible Red Giant Branch star, Proper motions mas/yr: -5.2 -15.5, 19 09 51.7472 -16 43 30.741

  Also noting a possible asteroid spike at 2533.275 BKJD

  

  Posted June 15, 2016 2:50 AM

• by ajamyajax

  Re 213983690 from Ivan's list and HM's mention: listed on VSX as an RR Lyrae variable and/or a short period contact binary. There is something a little different here, so maybe it is both.

  s1=2468.61921 p1=0.30679 d1=0.2 (4.8 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213983690 , 2MASS J18523806-2742048 , 12.493 , 12.253 , 12.143 , 0.24 , 0.11 , ('G0V', 1.09) , ('K2V', 0.85)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213983690 283.1586 -27.7013 0.11 13.360 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213983690,2MASS J18523806-2742048,283.158612,-27.701328,6163.00,1.13,0.86,13.360,-0.400,-32.100,667.4±91.85

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable ASAS J185238-2742.1 -- 18 52 38.07 -27 42 04.8 Sgr RRC|EC 0.30679 13.2 (0.42) V
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=112971

  

  Posted June 15, 2016 2:52 AM

• by ajamyajax

  Re 216747137 from Hans Martin's list: as mentioned by HM this looks like at least a triple system.

  s1=2468.55 p1=0.16107 d1=0.04 (0.96 hours or more) --> or an interval of this period
  
  s2=2468.96 p2=1.3817 d2=0.4 (9.6 hours or more)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216747137 , 2MASS J18521800-2147506 , 14.358 , 14.413 , 14.720 , -0.055 , -0.307 , ('B8V', 3.4) , ('', 0.0)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216747137 283.0750 -21.7974 0.05 13.869 7
  
  216739637 283.0554 -21.8109 81.59 14.118 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216747137,2MASS J18521800-2147506,283.075012,-21.797408,8197.00,3.48,0.81,13.869,7.900,-6.700,5799±343.6

  Per VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  6.56 Variable ASAS J185243-2144.5 -- 18 52 42.47 -21 44 33.7 Sgr MISC 54.938587 12.93 (0.26) V

  From Simbad:

  84.09 arcsecs away: OHIO U -282 -- Radio-source, 18 52 24.0 -21 48 00
  
  118.79 arcsecs away: IRAS 18494-2151 -- Infra-Red source, 18 52 26.3 -21 48 18

  
  

  Posted June 15, 2016 2:53 AM

• by ajamyajax

  Re 216340209 from Hans Martin's list: speculative with only two possible transit events, but maybe a blended mini gas giant planet candidate with a 1.03 R_sol star or so. With the Huber/NEA value of 1.5 R_sol, a PC radius estimate would be ~3.27Re.

  s1=2494.29 p1=36.14 d1=0.27 (6.48 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216340209 , 2MASS J19103844-2231251 , 11.298 , 11.011 , 10.906 , 0.287 , 0.105 , ('G1V', 1.07) , ('K2V', 0.85)

  au min-max 0.205 0.205
  
  stellar diameter in solar units min-max 1.02 1.045
  
  stellar mass in solar units min-max 0.88 0.88
  
  period in days min-max 36.139 36.139
  
  duration in hours min-max 6.4 6.557
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216340209 287.6601 -22.5237 0.20 12.493 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216340209,2MASS J19103844-2231251,287.660145,-22.523664,6168.00,1.50,1.19,12.493,4.800,11.800,524.8±180.5

  

  Posted June 16, 2016 5:01 PM

• by ajamyajax

  Re 213550243 from Ivan's list: and interesting as a possible heartbeat candidate because it seems to be without a hot A-F type primary.
  This target is listed as a cooler giant or subgiant by Huber/NEA. The transit duration does indeed support a larger radius primary star though. Also nearby 213548509 shows no sign of this transit.

  s1=2468.732 p1=0.31393 d1=0.167 (4.0 hours or so)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213550243 , 2MASS J19062908-2902093 , 9.902 , 9.480 , 9.351 , 0.422 , 0.129 , ('K1V', 0.86) , ('K4V', 0.78)

  Semi-Major Axis a (A.U.) = 0.009
  
  Stellar diameter ratio = 3.12
  
  Stellar mass ratio = 0.89
  
  Period ~= 0.314 days
  
  Duration ~= 4.0102 hours
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213550243 286.6211 -29.0360 0.18 11.241 7
  
  213548509 286.6148 -29.0418 28.85 15.378 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213550243,2MASS J19062908-2902093,286.621072,-29.035956,5324.00,2.23,0.89,11.241,-42.000,-33.600,348.1±65.04

  Listed as TYC 6885-1397-1 -- Star on Simbad

  

  Posted June 16, 2016 5:02 PM

• by ajamyajax

  Re 214001428 from Ivan's list: a very faint target at 17.889 Kepmag and listed as an RR Lyrae on VSX, but the best option here with MAST data shows this target as a blended source at best. And not shown accordingly, but hopefully the info and link below will sort of paint the picture.

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214001428 , 2MASS J18500141-2739041 , 16.364 , 16.248 , 15.416 , 0.116 , 0.832 , ('F0V', 1.58) , ('', 0.0)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214001428 282.5059 -27.6512 0.14 17.889 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214001428,2MASS J18500141-2739041,282.505914,-27.651163,,,,17.889,,,

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable [CAG2000] vs5f178 -- 18 50 01.42 -27 39 04.2 Sgr RRC 0.31270 18.5 (0.40) B
  
  1.43 Variable ASAS J185002-2737.6 -- 18 50 01.71 -27 37 38.6 Sgr MISC 21.304012 11.74 (0.14) V
  
  4.20 Variable ASAS J185018-2741.3 -- 18 50 17.52 -27 41 17.6 Sgr EB 0.97799 12.67 - 13.55 V
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=209653

  Posted June 16, 2016 5:12 PM

• by ajamyajax

  Re 214608706 from Hans Martin's list: interesting for the short duration binary transits that appear blended, but this effect could be caused by two very small dwarfs in eccentric orbits.

  s1=2468.495 p1=7.3495 d1=0.075 (1.8 hours +/-)
  
  s2=2470.893 p2=7.3495 d2=0.075 (1.8 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214608706 , 2MASS J19181889-2604232 , 12.673 , 12.099 , 11.797 , 0.574 , 0.302 , ('K6V', 0.7) , ('M4V', 0.24)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214608706 289.5787 -26.0731 0.16 14.981 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214608706,2MASS J19181889-2604232,289.578736,-26.073130,3526.00,0.23,0.22,14.981,,,72.5±20.47

  

  Posted June 16, 2016 8:43 PM

• by ajamyajax

  Re 216529648 from Hans Martin's list: this target appears to be a blended binary by an alternating fit. And nearby 216536499 shows no sign of this transit.

  s1=2468.597 p1=0.599043 d1=0.10 (2.4 hours +/-)

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216529648 , 2MASS J18583943-2211038 , 12.136 , 11.495 , 11.336 , 0.641 , 0.159 , ('M7V', 0.098) , ('K6V', 0.7)

  From NEA, K2 Targets within search area:
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  216529648 284.6643 -22.1844 0.06 14.147 7
  216536499 284.6294 -22.1723 124.26 12.570 7

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216529648,2MASS J18583943-2211038,284.664312,-22.184389,4590.00,0.66,0.73,14.147,-2.500,16.000,236.4±1580(?)

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  1.60 Variable ASAS J185835-2209.9 -- 18 58 34.60 -22 09 55.2 Sgr VAR -- 10.939 (0.278) Ic
  
  5.55 Variable ASAS J185858-2214.5 -- 18 58 58.15 -22 14 31.9 Sgr VAR -- 8.882 (0.096) Ic
  
  6.80 Variable ASAS J185854-2216.8 -- 18 58 54.47 -22 16 54.6 Sgr VAR -- 10.443 (0.309) Ic
  

  Also noting a possible asteroid spike at 2475.135 BKJD.

  

  Posted June 17, 2016 5:36 PM

• by ajamyajax

  Re 213488176 from Ivan's list: another faint target at 18.04 Kepmag that is listed on VSX as an RR Lyrae. The LC quality is again not great though so not shown. And contamination from another source also seems possible, especially with a number of these in the vicinity (see list below).

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213488176 , 2MASS J18503237-2914536 , 16.502 , 15.816 , 15.413 , 0.686 , 0.403 , ('M8V', 0.082) , ('M7V', 0.098)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213488176 282.6349 -29.2482 0.13 18.040 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213488176,2MASS J18503237-2914536,282.634898,-29.248236,,,,18.040,,,

  Also no stellar parameters on NEA for this target.

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.01 Variable [CAG2000] vs11f159 -- 18 50 32.36 -29 14 53.2 Sgr RRAB 0.81883 19.0 (0.39) B
  
  2.25 Variable [CAG2000] vs10f159 -- 18 50 42.70 -29 14 47.4 Sgr RRC 0.30633 19.2 (0.63) B
  
  4.71 Variable [CAG2000] vs12f158 -- 18 50 45.25 -29 11 06.3 Sgr RRAB 0.60618 19.2 (1.06) B
  
  5.56 Variable [CAG2000] vs8f159 -- 18 50 56.97 -29 16 20.7 Sgr RRC 0.29864 19.2 (0.60) B
  
  6.02 Variable [CAG2000] vs3f187 -- 18 50 15.21 -29 19 36.2 Sgr RRAB 0.60252 17.3 (0.94) B
  
  6.34 Variable [C2001c] vs11f158 -- 18 50 46.72 -29 09 22.8 Sgr RRD 0.50367 17.9 (0.61) B
  
  6.67 Variable [CAG2000] vs4f187 -- 18 50 09.33 -29 19 16.4 Sgr RRC 0.29930 19.2 (0.62) B
  

  And listed at this location:

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=209773

  Posted June 17, 2016 11:47 PM

• by ajamyajax

  Re 219217635 from Hans Martin's list: as mentioned by HM another possible triple system. There could be some ETV to suggest another component. And nearby 219230005 has somewhat blended and similar features, but maybe just a similar type of star.

  s1=2468.86 p1=0.61806 d1=0.08 (1.92 hours +/-)
  
  s2=2469.41 p2=3.5915 d2=0.18 (4.32 hours +/-)
  

  The usual colors and other stellar estimates are not available here.
  
  RA/Dec 18 59 00.625 -17 15 57.13 (284.7526050 -17.2658700), 12.725 KepMag

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219217635,,284.752612,-17.265870,,,,12.725,-1.900,-7.100,

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219217635 284.7526 -17.2659 0.12 12.725 7
  
  219230005 284.7418 -17.2380 107.00 12.273 7
  

  

  Posted June 17, 2016 11:49 PM

• by ajamyajax

  Re 213752222 from Ivan's list: on VSX with a variability type of RRAB: RR Lyra variables with asymmetric light curves (steep ascending branches).

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213752222 283.2566 -28.3852 0.11 17.176 7
  

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.09 Variable [CAG2000] vs4f98 -- 18 53 01.45 -28 23 11.7 Sgr RRAB 0.48671 21.1 (2.16) B
  
  2.47 Variable [CAG2000] vs0f99 -- 18 53 00.18 -28 25 33.6 Sgr RRAB 0.60769 19.2 (1.20) B
  
  3.33 Variable [CAG2000] vs4f70 -- 18 53 16.38 -28 22 25.6 Sgr RRAB 0.60064 19.3 (0.71) B
  
  4.06 Variable [CAG2000] vs5f70 -- 18 53 12.61 -28 19 51.2 Sgr RRAB 0.54449 19.3 (1.08) B
  
  5.41 Variable ASAS J185317-2827.3 -- 18 53 17.22 -28 27 17.0 Sgr MISC 60.763889 12.7 (0.37) V
  
  5.73 Variable [CAG2000] vs5f98 -- 18 52 35.55 -28 23 12.0 Sgr RRAB 0.58696 19.4 (0.91) B
  
  5.84 Variable V0816 Sgr 000-BFF-296 18 52 35.02 -28 23 12.0 Sgr RRAB 0.5456616 14.6 - 15.4 p
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=210291

  Posted June 19, 2016 11:28 PM

• by ajamyajax

  Re 219731054 and 219731547 from Hans Martin's list: these two very close binary targets (5.41 arcsecs away) are virtually identical in min corrected data with 219731054 shown here. So it is difficult to tell the source if not a bound pair. Also nearby 219730554 (47.27 arcsecs away) is contaminated by the primary transit here while 219739694 and 219721030 show possible faint contamination.

  s1=2468.92 p1=0.87804 d1=0.17 (4.08 hours +/-)
  
  s2=2469.359 p2=0.87804 d2=0.16 (3.84 hours +/-)
  

  Transit fit flux reductions in minimally corrected data:
  
  219731054 primary ~17.4%, secondary ~4.6%
  
  219731547 primary ~17.4%, secondary ~4.6%
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219731054 , 2MASS J19150165-1558405 , 9.098 , 9.059 , 9.045 , 0.039 , 0.014 , ('A5V', 1.9) , ('B8V', 3.4)
  
  219731547 , 2MASS J19150153-1558355 , 9.379 , 9.333 , 9.360 , 0.046 , -0.027 , ('A5V', 1.9) , ('B2V', 7.4)
  
  219752569 , 2MASS J19150195-1554555 , 11.243 , 10.963 , 10.940 , 0.28 , 0.023 , ('G1V', 1.07) , ('B9.5V', 2.5)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219731054 288.7569 -15.9779 0.12 9.775 7
  
  219731547 288.7564 -15.9765 5.41 9.126 7
  
  219730554 288.7433 -15.9793 47.27 16.263 7
  
  219739694 288.7265 -15.9531 138.02 13.474 7
  
  219717001 288.7316 -16.0177 167.79 9.844 7
  
  219721030 288.7112 -16.0065 188.61 12.654 7
  
  219713566 288.7860 -16.0276 205.25 12.968 7
  
  219712455 288.7251 -16.0306 219.20 12.762 7
  
  219713114 288.7209 -16.0287 221.16 16.630 7
  
  219752569 288.7581 -15.9155 224.79 12.296 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219731054,2MASS J19150165-1558405,288.756883,-15.977930,,,,9.775,-1.700,-1.900,none
  
  219731547,2MASS J19150153-1558355,288.756405,-15.976524,6643.00,2.83,1.79,9.126,3.600,2.600,442.5±161.3
  219752569,2MASS J19150195-1554555,288.758056,-15.915451,6352.00,1.40,1.20,12.296,11.500,6.700,477±150.4

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.09 Variable ASAS J191501-1558.7 -- 19 15 01.54 -15 58 35.5 Sgr ED 0.878119 8.92 (0.22) V

  Listed on Simbad:
  5.24 arcsecs: HD 179923 -- Star, Proper motions mas/yr: 3.6 2.6, Spectral type: B9IV/V, 19 15 01.537 -15 58 35.49
  

  
  

  Posted June 19, 2016 11:30 PM

• by ajamyajax

  Re 213749152 from Ivan's list: also on VSX with variability type RRAB.

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213749152 281.6618 -28.3943 0.12 15.365 7
  

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.07 Variable [CAG2000] vs2f294 -- 18 46 39.10 -28 23 37.3 Sgr RRAB 0.63079 19.4 (0.54) B
  
  1.01 Variable [CAG2000] vs4f294 -- 18 46 34.26 -28 23 35.6 Sgr RRAB 0.49099 19.0 (1.34) B
  
  1.78 Variable NN Sgr 000-BFD-818 18 46 32.28 -28 24 41.9 Sgr -- -- 14.5 - 16.0 p
  
  2.78 Variable [CAG2000] vs3f294 -- 18 46 36.53 -28 20 55.2 Sgr RRAB 0.59101 19.4 (0.97) B
  
  3.54 Variable [CAG2000] vs5f295 -- 18 46 34.56 -28 27 04.0 Sgr RRAB 0.82071 19.0 (0.35) B
  
  3.67 Variable [CAG2000] vs0f294 -- 18 46 49.83 -28 20 53.6 Sgr RRC 0.33583 19.0 (0.49) B
  
  4.58 Variable [CAG2000] vs6f294 -- 18 46 18.61 -28 22 34.7 Sgr RRAB 0.58932 19.4 (0.78) B
  
  5.46 Variable [CAG2000] vs7f295 -- 18 46 46.42 -28 28 51.2 Sgr RRAB 0.60306 17.0 (0.84) B
  
  5.52 Variable [CAG2000] vs7f294 -- 18 46 16.00 -28 21 22.6 Sgr RRAB 0.51072 19.3 (1.12) B
  
  5.59 Variable [CAG2000] vs8f294 -- 18 46 13.53 -28 23 06.5 Sgr RRAB 0.63644 19.4 (0.74) B
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=209001

  Posted June 19, 2016 11:32 PM

• by ajamyajax

  Re 215189451 from Ivan's list: min corrected data shows a possibly unknown RR lyr variable here.

  s1=2468.587 p1=0.40461 d1=0.25 (6.0 hours or more)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  215189451 282.3980 -24.7452 0.07 13.303 7
  
  215182477 282.3981 -24.7601 53.70 13.502 7
  
  215196646 282.3825 -24.7298 75.05 11.217 7
  
  215198923 282.3765 -24.7248 101.60 14.426 7
  
  215190060 282.4414 -24.7439 142.00 14.696 7
  
  215177423 282.4329 -24.7712 147.63 13.210 7
  

  

  Posted June 19, 2016 11:33 PM

• by ajamyajax

  Re 213830422 from Ivan's list: also on VSX with variability type RRAB, but with a Kepmag of 17.483 no surprise that it appears very blended.

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213830422 282.1464 -28.1486 0.20 17.483 7
  
  213830059 282.1641 -28.1497 56.47 15.696 7
  
  213826072 282.1259 -28.1612 79.28 17.783 7
  
  213821248 282.1675 -28.1759 119.12 13.916 7
  

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.09 Variable [CAG2000] vs1f237 -- 18 48 35.38 -28 08 50.4 Sgr RRAB 0.61016 19.4 (0.62) B
  
  0.94 Variable [CAG2000] vs0f237 -- 18 48 39.38 -28 08 58.7 Sgr RRAB 0.53691 17.1 (1.28) B
  
  1.32 Variable [CAG2000] vs3f237 -- 18 48 30.22 -28 09 40.2 Sgr RRAB 0.57501 18.2 (0.76) B
  
  5.23 Variable [CAG2000] vs0f209 -- 18 48 56.01 -28 06 26.5 Sgr RRC 0.33921 17.8 (0.66) B
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=209361

  Posted June 19, 2016 11:34 PM

• by ajamyajax

  Re 214351555 from Ivan's list: a bright possible subgiant at 10.009 Kepmag, but seems to be contaminated by a nearby RR Lyr only 0.15-0.26 arcsecs away. That source could be 214350124 (which has the same coordinates as the VSX listing), but a blended RRAB signal is only really visible in MAST data so perhaps it is another star very close by.

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214351555 , 2MASS J18515535-2642368 , 9.184 , 9.111 , 9.076 , 0.073 , 0.035 , ('A7V', 1.76) , ('A4V', 1.91)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214351555 282.9807 -26.7102 0.18 10.009 7
  
  214350124 282.9784 -26.7140 15.37 15.958 7
  

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  

  0.26 Variable [CAG2000] vs3f118 -- 18 51 54.80 -26 42 50.3 Sgr RRAB 0.61190 17.1 (0.83) B
  
  4.44 Variable [CAG2000] vs3f90 -- 18 52 11.90 -26 45 05.3 Sgr RRC 0.28996 17.2 (0.71) B
  
  6.10 Variable [CAG2000] vs0f117 -- 18 51 39.95 -26 37 34.5 Sgr RRAB 0.65277 19.7 (0.49) B
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=210083

  Listed as HD 174523 -- Star on Simbad, Proper motions mas/yr: -4.4 -4.4, Spectral type: B9IV/V (subgiant or variable), 18 51 55.3652 -26 42 36.909

  Posted June 19, 2016 11:35 PM

• by ajamyajax

  Re 214258372 from Ivan's list: interesting because this target looks like a blend with a RR Lyra and a Cepheid-like periodic variable, in the MAST data anyway. No other nearby sources were found. Also the stellar neighbor is rather red in color in general, but the proper motions list this star as closer than many we observe.

  s1=2468.8 p1=21.05 d1=? <br/
  s2=2483.38 p2=21.05 d2=?
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214258372 , 2MASS J19175083-2657085 , 11.238 , 10.723 , 10.650 , 0.515 , 0.073 , ('K3V', 0.81) , ('G2V', 1.0)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214258372 289.4618 -26.9524 0.08 12.836 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214258372,2MASS J19175083-2657085,289.461807,-26.952379,4979.00,0.71,0.77,12.836,-13.400,-47.800,185.4±21.67

  

  Posted June 19, 2016 11:37 PM

• by ajamyajax

  Re 213642585 from Ivan's list: another RRAB type variable on VSX, with MAST data showing this fairly well. A dim 14.975 Kepmag target though, so probably somewhat light diluted. But could still be real. Also nearby 213642832 does not show a similar period.

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213642585 282.9643 -28.7315 0.17 14.975 7
  
  213642832 282.9467 -28.7307 55.63 11.718 7
  

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.10 Variable [CAG2000] vs5f128 -- 18 51 51.48 -28 43 47.7 Sgr RRAB 0.58160 19.3 (1.00) B
  
  4.00 Variable [CAG2000] vs0f128 -- 18 52 07.81 -28 45 39.5 Sgr RRC 0.32531 19.2 (0.57) B
  
  4.15 Variable [CAG2000] vs1f128 -- 18 52 05.25 -28 41 03.6 Sgr RRAB 0.57455 19.3 (1.03) B
  
  5.19 Variable [CAG2000] vs6f128 -- 18 51 35.57 -28 47 44.7 Sgr RRAB 0.52733 19.4 (1.37) B
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=210069

  Posted June 19, 2016 11:39 PM

• by Dolorous_Edd

  RR Lyraes

  EPIC

  214696591

  214698522

  214716546

  214724179

  214725341

  214727166

  214729331

  214740570

  214748545

  214751924

  214756939

  214766056

  214771425 - maybe contaminated by one

  214771966

  214775932

  214780832

  214785314

  214791174

  214804954

  215176492

  215181610

  214848257 - maybe contaminated

  214871608

  214897651 - maybe contaminated

  214906457 - maybe contaminated

  214928648

  214963499

  214965194

  214989513

  215036507 - maybe contaminated

  215060680

  215064500 - periodic variable dunno

  215092452

  215189451 - contamination?

  215214773

  Posted June 20, 2016 7:48 AM

• by ajamyajax

  Just some added constraints and identifications for more likely C7 binaries...

  Re 213689594 from Ivan's list: only three transit events here, but probably an eccentric binary with the primary transit depth ~4.658%.
  
  Also none of the nearby EPICs show any obvious sign of transit contamination.

  s1=2464.755 p1=45.975 d1=0.40 (9.6 hours +/-) <-- epoch estimated from primary's period..
  
  s2=2489.49 p2=45.975 d2=0.55 (13.2 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213689594 , 2MASS J19172832-2834491 , 10.632 , 10.228 , 10.150 , 0.404 , 0.078 , ('K0V', 0.89) , ('G5V', 0.98)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213689594 289.3680 -28.5803 0.05 12.175 7
  
  213690056 289.3824 -28.5788 45.84 13.288 7
  
  213685624 289.3567 -28.5931 58.27 13.683 7
  
  213690825 289.3864 -28.5763 59.93 14.205 7
  
  213693825 289.3857 -28.5668 74.15 13.414 7
  
  213687395 289.3314 -28.5874 118.49 13.859 7
  
  213695753 289.4028 -28.5609 130.34 14.273 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213689594,2MASS J19172832-2834491,289.368002,-28.580314,5604.00,1.01,0.93,12.175,5.600,-29.200,245.6±291.8

  

  ---

  Re 213743957 from Ivan's list: known short period rotational variable per VSX.

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213743957 , 2MASS J19184507-2824368 , 9.680 , 9.147 , 9.033 , 0.533 , 0.114 , ('K3V', 0.81) , ('K3V', 0.81)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213743957 289.6878 -28.4103 0.16 11.446 7
  
  213742275 289.6755 -28.4151 42.75 13.795 7
  
  213743619 289.7345 -28.4113 147.83 12.944 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213743957,2MASS J19184507-2824368,289.687829,-28.410262,4913.00,3.47,0.94,11.446,17.000,32.600,477.5±485.8

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable ASAS J191845-2824.5 -- 19 18 45.08 -28 24 36.9 Sgr ROT 0.6605 11.680 (0.187) V
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=281826

  VSX Variability Type:
  
  "ROT: Spotted stars that weren't classified into a particular class. All the SPOTTED stars in the UNSW list and the very small amplitude spotted stars found by Kepler are included here. Also, some stars that don't fit the current subtypes due to their physical properties have been classified as such (brown dwarfs and white dwarfs with spots)..."

  Listed on Simbad as 2MASS J19184507-2824368 -- Rotationally variable Star, 19 18 45.076 -28 24 36.87

  ---

  Re 213664903 from Ivan's list: looks like a binary with V-shaped transit depths of ~13.91% for the primary and ~9.65% for the secondary. Always a chance for blend but likely two small dwarfs here which seems to work for these transits.

  s1=2469.612 p1=6.531 d1=0.552 (13.25 hours +/-)
  
  s2=2472.865 p2=6.531 d2=0.552 (13.25 hours +/-)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213664903 286.5383 -28.6594 0.03 13.141 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213664903,2MASS J19060918-2839337,286.538297,-28.659392,4711.00,0.64,0.68,13.141,-34.800,56.700,190.4±18.17
  

  ---

  Re 213599585 from Ivan's list: another binary with V-shaped transit depths of ~12.31% and ~12.38%, so components could be similar in size.
  Also no sign of contamination in nearby 213600549.

  s1=2471.07 p1=6.29 d1=0.25 (6.0 hours +/-)
  
  s2=2474.215 p2=6.29 d2=0.25 (6.0 hours +/-)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213599585 286.7064 -28.8720 0.10 11.830 7
  
  213600549 286.7343 -28.8688 88.76 11.492 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213599585,2MASS J19064953-2852191,286.706386,-28.872026,6372.00,1.96,1.45,11.830,5.100,-4.700,528±340.2
  

  ---

  Re 213196496 from Ivan's list: known binary V1252 Sgr per VSX.

  s1=2468.895 p1=1.435689 d1=0.25 (6.0 hours)
  
  s2=2469.613 p2=1.435689 d2=0.25 (6.0 hours)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213196496 , 2MASS J19103625-3020316 , 10.791 , 10.677 , 10.641 , 0.114 , 0.036 , ('F0V', 1.58) , ('A3V', 2.0)

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213196496 287.6511 -30.3421 0.11 12.007 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213196496,2MASS J19103625-3020316,287.651087,-30.342129,7516.00,2.08,1.79,12.007,-4.100,5.200,678.9±301.5
  

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable V1252 Sgr 000-BCF-609 19 10 36.26 -30 20 31.6 Sgr EA/SD 1.435689 11.4 - 13.0 p
  

  Listed as V* V1252 Sgr -- Eclipsing binary of Algol type (detached) on Simbad, Proper motions mas/yr: -4.1 5.2, 19 10 36.261 -30 20 31.66

  ---

  Re 213273052 from Ivan's list: appears to be an eccentric binary with transit depths of ~43.6% and ~37.49%.

  s1=2481.206 p1=33.69 d1=0.90 (21.6 hours)
  
  s2=2499.932 p2=33.69 d2=0.55 (13.2 hours)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213273052 287.1037 -30.0323 0.03 11.626 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213273052,2MASS J19082489-3001562,287.103708,-30.032296,5990.00,1.63,1.22,11.626,-2.200,-9.000,337.8±200.1

  Listed as TYC 7410-374-1 -- Star on Simbad, Proper motions mas/yr: -2.2 -9.0

  ---

  Re 213338208 from Ivan's list: known binary V980 Sgr per VSX.

  s1=2469.00 p1=2.49753 d1=0.40 (9.6 hours +/-)
  
  s2=2470.25 p2=2.49753 d2=0.40 (9.6 hours +/-)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213338208 290.0163 -29.7905 0.15 13.322 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213338208,2MASS J19200390-2947257,290.016259,-29.790478,6305.00,1.33,1.06,13.322,-1.100,-9.700,680.9±185
  

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable V0980 Sgr 000-BFF-450 19 20 03.90 -29 47 25.7 Sgr EA/SD: 2.49753 13.8 - <15.3 p
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=28680

  Listed as V* V980 Sgr -- Eclipsing binary of Algol type (detached) on Simbad, 19 20 03.90 -29 47 25.7

  ---

  Re 213354839 from Ivan's list: looks like a binary with transit depths of ~16.65% and ~1.58%.

  s1=2488.09 p1=2.3436 d1=0.20 (4.8 hours +/-)
  
  s2=2489.262 p2=2.3436 d2=0.20 (4.8 hours +/-)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213354839 287.4466 -29.7276 0.10 11.593 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213354839,2MASS J19094718-2943392,287.446587,-29.727574,7736.00,1.60,1.62,11.593,-13.200,15.800,504.6±82.82

  Listed as TYC 6886-68-1 -- Star on Simbad, 19 09 47.181 -29 43 39.27

  ---

  Re 213370752 from Ivan's list: known binary V858 Sgr per VSX.

  s1=2468.686 p1=1.072605 d1=0.17 (4.08 hours +/-)
  
  s2=2469.22 p2=1.072605 d2=0.15 (3.6 hours +/-)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213370752 287.4438 -29.6691 0.09 14.153 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213370752,2MASS J19094652-2940087,287.443827,-29.669090,7033.00,1.82,1.61,14.153,1.700,-3.300,1901±504.3
  

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.01 Variable V0858 Sgr 000-BFF-337 19 09 46.53 -29 40 08.2 Sgr EA/SD: 1.072605 14.2 - 15.5 p
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=28558

  Listed as V* V858 Sgr -- Eclipsing binary of Algol type (detached) on Simbad, 19 09 46.52 -29 40 08.7

  ---

  Re 213462890 from Ivan's list: slightly eccentric small dwarf binary with transit depths of ~3.35% and 1.20%.

  s1=2470.515 p1=5.8469 d1=0.10 (2.4 hours +/-)
  
  s2=2473.731 p2=5.8469 d2=0.07 (1.68 hours +/-)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213462890 289.0981 -29.3367 0.17 15.248 7
  
  213467478 289.0593 -29.3205 134.90 12.129 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213462890,2MASS J19162352-2920120,289.098080,-29.336657,4079.00,0.44,0.49,15.248,-21.100,-53.000,205±53.07
  

  VSX and Simbad have stars, but no nearby binaries

  ---

  Re 213515922 from Ivan's list: known short period contact binary V902 Sgr per VSX.

  From NEA K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213515922 291.3091 -29.1525 0.14 14.002 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213515922,2MASS J19251418-2909087,291.309062,-29.152478,5648.00,1.01,0.98,14.002,10.700,-6.400,656.2±482

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.01 Variable V0902 Sgr 000-BFF-380 19 25 14.15 -29 09 08.7 Sgr EW/KW 0.2939444 14.4 - 14.8 p
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=28602

  Variability type EW/KW:

  "EW: W Ursae Majoris-type eclipsing variables. These are eclipsers with periods usually shorter than 1 day, consisting of ellipsoidal components almost in contact and having light curves for which it is impossible to specify the exact times of onset and end of eclipses. The depths of the primary and secondary minima are almost equal or differ insignificantly. Light amplitudes are usually <0.8 mag. in V. The components generally belong to spectral types F-G and later."
  
  "KW: Contact systems of the W UMa type, with ellipsoidal components of F0-K spectral type. Primary components are main-sequence stars and secondaries lie below and to the left of the main sequence in the (MV, B-V) diagram."
  

  Listed as V* V902 Sgr -- Eclipsing binary of W UMa type (contact binary) on Simbad, 19 25 14.18 -29 09 08.8

  https://en.wikipedia.org/wiki/W_Ursae_Majoris_variable

  ---

  Re 213518704 from Ivan's list: known binary V0523 Sgr per VSX.

  s1=2502.491 p1=2.3238102 d1=0.25 (6.0 hours)
  
  s2=2503.548 p2=2.3238102 d2=0.30 (7.2 hours)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213518704 285.7275 -29.1427 0.04 9.665 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213518704,2MASS J19025459-2908336,285.727502,-29.142711,6743.00,2.10,1.60,9.665,-3.800,-12.400,290.7±144.4

  From VSX:

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable V0523 Sgr 000-BCF-062 19 02 54.60 -29 08 33.8 Sgr EA/DM 2.3238102 9.57 - 9.9 V
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=28223

  ---

  Re 213523208 from Ivan's list: possible new binary here with a primary transit depth of more than 50%. The nearby EPIC does not display any transits but is listed as a double star so possibly other observations picked up contaminated from this source.

  s1=2470.487 p1=2.312 d1=0.35 (8.4 hours +/-)
  
  s2=2471.643 p2=2.312 d2=0.35 (8.4 hours +/-)
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213523208 , 2MASS J19095921-2907392 , 11.419 , 11.066 , 10.967 , 0.353 , 0.099 , ('G8V', 0.94) , ('K3V', 0.81)
  
  213528240 , 2MASS J19100594-2906369 , 9.256 , 8.529 , 8.920 , 0.727 , -0.391 , ('M8V', 0.082) , ('', 0.0)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213523208 287.4967 -29.1276 0.08 12.650 7
  
  213528240 287.5248 -29.1103 108.06 10.336 7
  
  213526809 287.4049 -29.1152 292.13 16.517 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213523208,2MASS J19095921-2907392,287.496703,-29.127579,6258.00,1.30,1.12,12.650,3.000,-3.400,489.4±306.5

  Note this is EPIC 213528240 which has no sign of any EB transits:
  
  From Simbad 106.49 arcsecs away: CCDM J19101-2907AB -- Double or multiple star, Proper motions mas/yr: 3.9 -56.0, Spectral type: G1V, 19 10 05.832 -29 06 37.67

  Also a search of the targets around 213528240 also showed only 213523208 having EB transits:
  
  From NEA K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213528240 287.5248 -29.1103 0.17 10.336 7
  
  213523208 287.4967 -29.1276 108.28 12.650 7
  
  213524632 287.6425 -29.1226 372.72 12.737 7
  
  213526809 287.4049 -29.1152 377.63 16.517 7
  

  ---

  Re 219515616 from Arvin's and HM's mention: possible binary or a blend with transit depths of ~15.42% and ~6.70%.

  s1=2470.19 p1=4.4358 d1=0.10 (2.4 hours +/-)
  
  s2=2472.407 p2=4.4358 d2=0.10 (2.4 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219515616 , 2MASS J19164132-1633323 , 12.978 , 12.291 , 12.152 , 0.687 , 0.139 , ('M8V', 0.082) , ('K5V', 0.75)

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219515616,2MASS J19164132-1633323,289.172207,-16.559070,4437.00,11.24,0.94,15.123,-0.200,-27.000,4932±2430

  Posted July 7, 2016 1:55 PM

• by ajamyajax

  Just a few more added constraints and identifications for likely C7 binaries and other targets...

  Re 216712967 from Hans Martin's list: looks like a binary with V-shaped transit depths of 12.32% and 3.75%.
  Also no contamination seen in nearby EPICs.
  

  s1=2471.783 p1=9.734 d1=0.25 (6.0 hours +/-)
  
  s2=2473.42 p2=9.734 d2=0.32 (7.68 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216712967 , 2MASS J18514246-2151301 , 8.815 , 8.818 , 8.768 , -0.003 , 0.05 , ('A2V', 2.1) , ('F1V',1.5)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216712967 282.9269 -21.8584 0.0 9.422 7
  
  216714040 282.9021 -21.8565 83.43 14.048 7
  
  216723867 282.9644 -21.8388 143.71 14.246 7
  
  216659122 282.9078 -21.9538 349.39 13.505 7
  
  216654172 282.9303 -21.9625 374.98 14.125 7
  
  216723109 283.0424 -21.8402 391.31 13.344 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216712967,2MASS J18514246-2151301,282.926940,-21.858386,7540.00,3.15,2.16,9.422,-0.100,-3.200,
  

  Listed as HD 174519 -- Star on Simbad, Proper motions mas/yr: -0.1 -3.2, Spectral type: B9IV/V (subgiant or variable), 18 51 42.4611 -21 51 30.190

  

  ---

  Re 213936277 from Hans Martin's list: type RRAB on VSX, but looks blended or could be contaminated.
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  213936277 , 2MASS J19062846-2750117 , 10.960 , 10.654 , 10.586 , 0.306 , 0.068 , ('G3V', 1.0) , ('G0V',1.09)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  213936277 286.6186 -27.8366 0.0 12.231 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  213936277,2MASS J19062846-2750117,286.618611,-27.836586,6076.00,1.71,1.25,12.231,-6.200,-4.000,
  

  From VSX:
  

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable ASAS J190628-2750.2 -- 19 06 28.47 -27 50 11.7 Sgr RRAB 0.551518 12.21 (0.18) V
  

  ---

  Re 214343851 from Hans Martin's list: possible binary with V-shaped transit depths of 39.48% and 26.53%. There appears to be a visual contact small companion on Aladin Lite.
  

  s1=2468.605 p1=5.529 d1=0.2083 (5.0 hours +/-)
  
  s2=2471.369 p2=5.529 d2=0.2083 (5.0 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  214343851 , 2MASS J19153692-2643479 , 10.610 , 10.431 , 10.352 , 0.179 , 0.079 , ('F5V', 1.32) , ('G5V',0.98)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  214343851 288.9039 -26.73 0.0 11.437 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  214343851,2MASS J19153692-2643479,288.903854,-26.729954,7005.00,2.00,1.60,11.437,-2.900,-6.000,
  

  Listed as TYC 6883-617-1 -- Star on Simbad, Proper motions mas/yr: -2.9 -6.0, 19 15 36.925 -26 43 47.83

  ---

  Re 216465617 from Hans Martin's list: shallow eccentric binary transits suggest a very small star system or a blend. No colors or stellar parameters available. 2MASS J18470748-2217549.

  No contamination seen in nearby EPICs. 216473899 is another EB candidate with a different period.
  

  s1=2479.685 p1=15.211 d1=0.18 (4.32 hours +/-)
  
  s2=2468.927 p2=15.211 d2=0.18 (4.32 hours +/-)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216465617 281.7812 -22.2986 0.0 13.577 7
  
  216461272 281.7684 -22.3064 51.03 12.397 7
  
  216457780 281.7844 -22.3129 52.52 11.831 7
  
  216473899 281.7992 -22.2838 80.26 13.150 7
  
  216468609 281.7408 -22.2932 135.69 9.120 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216465617,,281.781162,-22.298596,,,,13.577,-28.200,-17.600,
  

  ---

  Re 216473899 from Hans Martin's list: could be a binary or a blend with transit depths of 12.09% and 6.33%. This star said to be a giant, so could be contaminated by a nearby eb with some indication of ETV as well. No contamination seen in nearby EPICs. 216465617 is another EB candidate with a different period.
  

  s1=2468.542 p1=1.44442 d1=0.2 (4.8 hours +/-)
  
  s2=2469.264 p2=1.44442 d2=0.17 (4.08 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216473899 , 2MASS J18471180-2217015 , 11.799 , 11.437 , 11.357 , 0.362 , 0.08 , ('G8V', 0.94) , ('G6V',0.97)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216473899 281.7992 -22.2838 0.0 13.150 7
  
  216465617 281.7812 -22.2986 80.26 13.577 7
  
  216457780 281.7844 -22.3129 115.73 11.831 7
  
  216461272 281.7684 -22.3064 130.97 12.397 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216473899,2MASS J18471180-2217015,281.799165,-22.283778,5474.00,8.65,0.87,13.150,5.700,-3.000,
  

  ---

  Re 216593670 from Hans Martin's list: known binary ASAS J184343-2204.2 per VSX.
  

  s1=2469.02 p1=2.323875 d1=0.38 (9.12 hours +/-)
  
  s2=2470.18 p2=2.323875 d2=0.38 (9.12 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216593670 , 2MASS J18434365-2204117 , 10.736 , 10.539 , 10.476 , 0.197 , 0.063 , ('F5V', 1.32) , ('F8V',1.18)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216593670 280.9319 -22.07 0.0 11.892 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216593670,2MASS J18434365-2204117,280.931946,-22.069952,6666.00,1.96,1.53,11.892,-0.600,-6.100,
  

  From VSX:
  

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable ASAS J184343-2204.2 -- 18 43 43.66 -22 04 11.8 Sgr ED 2.323875 11.64 (0.35) V
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=112267

  Listed as TYC 6292-729-1 -- Star on Simbad, Proper motions mas/yr: -0.6 -6.1, 18 43 43.667 -22 04 11.83
  

  ---

  Re 216778519 from Hans Martin's list: could be a binary with transit depths of 16.41% and 7.28% Also no sign of contamination in nearby EPIC's, including bright 216729867 435.05 arcsecs away which is considered a double system by Simbad
  

  s1=2468.522 p1=1.2644 d1=0.2 (4.8 hours or more)
  
  s2=2469.155 p2=1.2644 d2=0.2 (4.8 hours or more)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216778519 , 2MASS J18595715-2144289 , 10.687 , 10.409 , 10.314 , 0.278 , 0.095 , ('G1V', 1.07) , ('K1V',0.86)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216778519 284.9881 -21.7414 0.0 11.712 7
  
  216771205 284.9659 -21.7545 88.08 9.940 7
  
  216768369 284.8899 -21.7596 334.95 14.204 7
  
  216832857 284.9771 -21.6443 351.37 16.361 7
  
  216802182 284.8715 -21.6991 418.68 14.025 7
  
  216729867 284.9001 -21.8283 429.60 8.009 7
  
  216779547 284.8516 -21.7395 456.60 13.264 7
  
  216850606 284.9441 -21.6128 485.70 14.674 7
  
  216716114 284.9010 -21.8528 495.75 14.614 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216778519,2MASS J18595715-2144289,284.988131,-21.741362,6196.00,1.79,1.31,11.712,5.200,-6.300,
  

  From Simbad 435.05 arcsecs away: BD-22 4938B -- Star in double system, 18 59 35.3 -21 49 40

  ---

  Re 216997973 from Hans Martin's list: known binary V1038 Sgr per VSX. Nearby 217011669 shows no sign of contamination.
  

  s1=2470.243 p1=1.93231 d1=0.25 (6.0 hours +/-)
  
  s2=2469.277 p2=1.93231 d2=0.25 (6.0 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  216997973 , 2MASS J18563625-2121067 , 11.342 , 11.141 , 10.989 , 0.201 , 0.152 , ('F6V', 1.25) , ('K6V',0.7)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  216997973 284.1511 -21.3519 0.0 12.426 7
  
  217011669 284.1431 -21.3279 90.45 11.455 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  216997973,2MASS J18563625-2121067,284.151078,-21.351874,6971.00,1.77,1.54,12.426,7.100,-5.500,
  

  From VSX:
  

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable V1038 Sgr 000-BFF-500 18 56 36.26 -21 21 06.7 Sgr EA/SD 1.93231 13.1 - 14.7 p
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=28738
  

  Listed as V* V1038 Sgr -- Eclipsing binary of Algol type (detached) on Simbad, 18 56 36.26 -21 21 06.7

  ---

  Re 217284183 from Hans Martin's list: known binary V1095 Sgr per VSX.
  

  s1=2469.55 p1=2.465204 d1=0.25 (6.0 hours +/-)
  
  s2=2470.783 p2=2.465204 d2=0.25 (6.0 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217284183 , 2MASS J19101056-2050445 , 12.629 , 12.348 , 12.327 , 0.281 , 0.021 , ('G1V', 1.07) , ('A0V',2.3)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217284183 287.544 -20.8457 0.0 13.313 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217284183,2MASS J19101056-2050445,287.544008,-20.845700,6189.00,1.51,1.23,13.313,-4.000,3.100,
  

  From VSX:
  

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.01 Variable V1095 Sgr 000-BFF-552 19 10 10.60 -20 50 44.6 Sgr EA/SD 2.465204 13.5 - 15.4 p
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=28795
  

  Listed as V* V1095 Sgr -- Eclipsing binary of Algol type (detached) on Simbad, 19 10 10.56 -20 50 44.6

  ---

  Re 217678776 from Hans Martin's list: could be a binary or a blend with a transit depth of 5.01%. Primary said to be a possible bright giant star which seem to be uncommon here.
  

  s1=2486.107 p1=29.519 d1=0.35 (8.4 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217678776 , 2MASS J18485057-2009128 , 7.759 , 7.790 , 7.727 , -0.031 , 0.063 , ('A0V', 2.3) , ('F8V',1.18)
  

  au min-max 0.2 0.255
  
  stellar diameter in solar units min-max 1.585 2.06
  
  stellar mass in solar units min-max 1.225 2.54
  
  period in days min-max 29.508 29.521
  
  duration in hours min-max 8.309 8.496
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217678776 282.2107 -20.1535 0.0 8.286 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217678776,2MASS J18485057-2009128,282.210742,-20.153543,10401.00,3.63,3.16,8.286,-0.600,-4.700,
  

  Listed as HD 173929 -- Star on Simbad, Proper motions mas/yr: -0.6 -4.7, Spectral type: B8II/III (bright giant/giant), 18 48 50.5749 -20 09 12.741

  

  ---

  Re 217684883 from Hans Martin's list: looks like an eccentric binary or a blend with a primary transit depth of 2.46%.
  

  s1=2481.27 p1=52.99 d1=0.33 (7.92 hours +/-)
  
  s2=2472.08 p2=52.99 d2=0.20 (4.8 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217684883 , 2MASS J19041832-2008334 , 8.479 , 8.450 , 8.486 , 0.029 , -0.036 , ('A4V', 1.91) , ('B1.5V',9.6)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217684883 286.0764 -20.1426 0.0 8.668 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217684883,2MASS J19041832-2008334,286.076355,-20.142599,10206.00,3.28,3.02,8.668,1.580,-7.320,
  

  Listed as HD 177164 -- Star on Simbad, Proper motions mas/yr: 1.58 -7.32, Spectral type: B8IV/V (subgiant or variable), 19 04 18.32775 -20 08 33.3578

  ---

  Re 217783102 from Hans Martin's list: slightly eccentric binary here with transit depths of 12.34% and 9.23%.
  

  s1=2473.32 p1=6.9942 d1=0.15 (3.6 hours +/-)
  
  s2=2469.966 p2=6.9942 d2=0.15 (3.6 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217783102 , 2MASS J19171387-1958113 , 9.443 , 9.054 , 9.007 , 0.389 , 0.047 , ('K0V', 0.89) , ('F2V',1.44)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217783102 289.3078 -19.9698 0.0 10.760 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217783102,2MASS J19171387-1958113,289.307774,-19.969838,5581.00,2.04,1.02,10.760,24.400,-3.000,
  

  Listed as TYC 6304-463-1 -- Star on Simbad, Proper motions mas/yr: 24.4 -3.0, 19 17 13.866 -19 58 11.42

  ---

  Re 217787883 from Hans Martin's list: looks like a binary with V-shaped transit depths of 27.3% and 25.9%.
  Also nearby 217769599 shows no sign of this transit.
  

  s1=2467.742 p1=3.187 d1=0.18 (4.32 hours +/-)
  
  s2=2469.336 p2=3.187 d2=0.18 (4.32 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217787883 , 2MASS J18493705-1957415 , 11.354 , 11.021 , 10.897 , 0.333 , 0.124 , ('G6V', 0.97) , ('K3V',0.81)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217787883 282.4044 -19.9615 0.0 12.728 7
  
  217769599 282.4096 -19.9935 116.23 12.742 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217787883,2MASS J18493705-1957415,282.404381,-19.961541,5686.00,1.94,1.04,12.728,0.600,-20.000,
  

  ---

  Re 217988332 from Hans Martin's list: known binary listed as ASAS J193048-1936.5 on VSX.
  

  s1=2468.805 p1=6.490608 d1=0.35 (8.4 hours +/-)
  
  s2=2472.05 p2=6.490608 d2=0.35 (8.4 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  217988332 , 2MASS J19304777-1936305 , 10.493 , 10.391 , 10.384 , 0.102 , 0.007 , ('F0V', 1.58) , ('B8V',3.4)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  217988332 292.6991 -19.6085 0.0 11.129 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  217988332,2MASS J19304777-1936305,292.699086,-19.608479,7796.00,1.97,1.80,11.129,-4.000,1.400,
  

  From VSX:
  

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable ASAS J193048-1936.5 -- 19 30 47.78 -19 36 30.5 Sgr ED 6.490608 11.13 (0.4) V
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=115763
  

  ---

  Posted July 13, 2016 1:17 PM

• by ajamyajax

  Just a few more added constraints and identifications for likely C7 binaries and other targets...

  Re 218070138 from Hans Martin's list: very eccentric binary with V-shaped transit depths of 39.25% and 31.8%.
  Also neither of the two nearby EPICs are contaminated by these transits.
  

  s1=2470.307 p1=15.1 d1=0.33 (7.92 hours +/-)
  
  s2=2482.98 p2=15.1 d2=0.33 (7.92 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218070138 , 2MASS J18490070-1927497 , 10.899 , 10.642 , 10.578 , 0.257 , 0.064 , ('F9V', 1.14) , ('F9V',1.14)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218070138 282.253 -19.4638 0.0 11.977 7
  
  218057600 282.2733 -19.4861 105.93 13.206 7
  
  218071795 282.2106 -19.4609 144.18 13.405 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218070138,2MASS J18490070-1927497,282.252958,-19.463802,6291.00,1.60,1.21,11.977,-3.100,-8.700,
  

  

  ---

  Re 218352063 from Hans Martin's list: known binary V1035 Sgr per VSX. And nearby 218359172 shows no sign of this transit.
  

  s1=2471.219 p1=3.32029 d1=0.35 (8.4 hours +/-)
  
  s2=2472.879 p2=3.32029 d2=0.35 (8.4 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218352063 , 2MASS J18554476-1857291 , 13.575 , 13.351 , 13.268 , 0.224 , 0.083 , ('F7V', 1.21) , ('G8V',0.94)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218352063 283.9366 -18.9581 0.0 14.601 7
  
  218359172 283.9102 -18.9451 101.34 11.497 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218352063,2MASS J18554476-1857291,283.936568,-18.958111,6772.00,5.19,0.81,14.601,-2.000,-8.100,
  

  From VSX:
  

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable V1035 Sgr 000-BFF-497 18 55 44.77 -18 57 29.2 Sgr EA 3.32029 15.0 - 15.8 p
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=28735
  

  Listed as V* V1035 Sgr -- Eclipsing binary of Algol type (detached) on Simbad, 18 55 44.77 -18 57 29.2

  ---

  Re 218429184 from Hans Martin's list: could be a blended binary with transit depths of 3.90% and 2.34%. Also no sign of contamination in nearby EPICs.
  

  s1=2469.627 p1=4.111 d1=0.2 (4.8 hours +/-)
  
  s2=2471.685 p2=4.111 d2=0.18 (4.32 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218429184 , 2MASS J19272623-1849067 , 11.373 , 11.043 , 10.969 , 0.33 , 0.074 , ('G6V', 0.97) , ('G2V',1.0)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218429184 291.8593 -18.8185 0.0 12.562 7
  
  218429339 291.8792 -18.8182 67.84 12.641 7
  
  218418892 291.891 -18.8372 127.15 15.706 7
  
  218419198 291.8949 -18.8367 137.65 17.151 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218429184,2MASS J19272623-1849067,291.859323,-18.818529,6063.00,1.46,1.14,12.562,-4.200,2.300,
  

  ---

  Re 218447594 from Hans Martin's list: known binary V1074 Sgr on VSX.
  

  s1=2468.967 p1=2.405734 d1=0.35 (8.4 hours +/-)
  
  s2=2470.171 p2=2.405734 d2=0.35 (8.4 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218447594 , 2MASS J19052368-1847068 , 10.683 , 10.231 , 10.149 , 0.452 , 0.082 , ('K2V', 0.85) , ('G9V',0.91)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218447594 286.3487 -18.7852 0.0 12.041 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218447594,2MASS J19052368-1847068,286.348706,-18.785235,5376.00,8.95,0.89,12.041,4.400,2.300,
  

  From VSX:
  

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable V1074 Sgr 000-BFF-533 19 05 23.68 -18 47 06.8 Sgr EA/SD 2.405734 12.7 - 15.2 p
  

  Listed as V* V1074 Sgr -- Eclipsing binary of Algol type (detached) on Simbad, Spectral type: K9V, 19 05 23.69 -18 47 06.8
  

  ---

  Re 218532187 from Hans Martin's list: known eccentric binary HIP 92307 on VSX. Also no sign of contamination in nearby EPICs.
  

  s1=2468.57 p1=4.7907 d1=0.30 (7.2 hours +/-)
  
  s2=2472.16 p2=4.7907 d2=0.30 (7.2 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218532187 , 2MASS J18484891-1837557 , 6.655 , 6.580 , 6.531 , 0.075 , 0.049 , ('A8V', 1.67) , ('F1V',1.5)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218532187 282.2038 -18.6322 0.0 7.289 7
  
  218527030 282.2176 -18.6416 58.02 12.532 7
  
  218528395 282.2376 -18.6392 118.16 13.467 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218532187,2MASS J18484891-1837557,282.203796,-18.632175,8102.00,4.57,2.67,7.289,6.860,-1.760,
  

  From VSX:
  

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.01 Variable HIP 92307 -- 18 48 48.96 -18 37 55.9 Sgr EA 4.7907 5.48 (0.03) HI-1A
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=282822

  Listed as HD 173940 -- Star on Simbad, Proper motions mas/yr: 6.86 -1.76, Spectral type: A2V, 18 48 48.90746 -18 37 55.8196

  ---

  Re 218681147 from Hans Martin's list: eccentric small dwarf binary with V-shaped transit depths of 0.65 and 0.66%.
  

  s1=2471.458 p1=10.496 d1=0.24 (6.24 hours +/-)
  
  s2=2476.33 p2=10.496 d2=0.24 (6.24 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218681147 , 2MASS J19053431-1821199 , 11.580 , 11.035 , 10.753 , 0.545 , 0.282 , ('K4V', 0.78) , ('M4V',0.24)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218681147 286.393 -18.3556 0.0 14.327 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218681147,2MASS J19053431-1821199,286.393014,-18.355552,3682.00,0.32,0.35,14.327,75.300,-6.700,
  

  ---

  Re 218695436 from Hans Martin's list: appears to be a blended binary with transit depths of 3.84% and 0.84%.

  s1=2468.645 p1=1.5493 d1=0.13 (3.12 hours +/-)
  
  s2=2469.42 p2=1.5493 d2=0.10 (2.4 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218695436 , 2MASS J19211991-1819443 , 10.976 , 10.732 , 10.645 , 0.244 , 0.087 , ('F9V', 1.14) , ('G8V',0.94)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218695436 290.3331 -18.3289 0.0 11.935 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218695436,2MASS J19211991-1819443,290.333070,-18.328903,6411.00,1.63,1.34,11.935,11.400,1.400,
  

  From VSX:
  

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  1.11 Variable ASAS J192121-1820.8 -- 19 21 21.57 -18 20 46.2 Sgr MISC 23.85648 10.54 (0.12) V
  

  ---

  Re 218715272 from Hans Martin's list: appears to be a binary with transit depths of 7.91% and 6.05%. Nearby 218715601 (15.81 arcsecs) shows weaker transit ephemeris from 218715272, so this seems to be contamination instead of a bound pair here. But distance estimates and proper motions are similar. The other two nearby EPICs do not show any sign of these transits.
  

  s1=2470.348 p1=2.939 d1=0.25 (6.0 hours +/-)
  
  s2=2468.64 p2=2.939 d2=0.16 (3.84 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218715272 , 2MASS J18480058-1817292 , 10.345 , 10.266 , 10.264 , 0.079 , 0.002 , ('F0V', 1.58) , ('B7V',3.9)
  
  218715601 , 2MASS J18480168-1817269 , 10.495 , 10.473 , 10.463 , 0.022 , 0.01 , ('A3V', 2.0) , ('B8V', 3.4)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218715272 282.0025 -18.2914 0.0 10.890 7
  
  218715601 282.007 -18.2908 15.81 11.007 7
  
  218703537 281.9806 -18.3137 109.46 12.627 7
  
  218700681 282.0328 -18.3191 143.6 13.422 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218715272,2MASS J18480058-1817292,282.002471,-18.291446,7884.00,2.08,1.90,10.890,1.900,-5.500,609.5±249.1
  
  218715601,2MASS J18480168-1817269,282.007049,-18.290828,8798.00,1.99,2.11,11.007,2.100,-9.300,664.7±238.2
  

  Listed as TYC 6285-3881-1 -- Star on Simbad, Proper motions mas/yr: 1.9 -5.5, 18 48 00.5880 -18 17 29.111

  ---

  Re 218754715 from Hans Martin's list: spotted star binary with transit depths of 5.04% and 1.63%. Also 218803648 is another binary candidate with P=14.05x, but none of the other nearby EPICs listed below have any obvious transits.
  

  s1=2472.97 p1=9.243 d1=0.70 (16.8 hours +/-)
  
  s2=2477.59 p2=9.243 d2=0.70 (16.8 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218754715 , 2MASS J18550913-1813009 , 10.720 , 9.987 , 9.772 , 0.733 , 0.215 , ('M8V', 0.082) , ('M0V',0.58)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218754715 283.788 -18.2169 0.0 12.446 7
  
  218733155 283.8131 -18.2576 169.69 12.750 7
  
  218785608 283.7814 -18.1581 212.96 12.905 7
  
  218761622 283.7211 -18.2037 233.77 13.466 7
  
  218800634 283.8026 -18.1296 318.27 11.958 7
  
  218803648 283.7841 -18.1238 335.50 12.464 7
  
  218758900 283.6833 -18.2089 359.30 13.640 7
  
  218703628 283.7389 -18.3135 386.13 12.765 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218754715,2MASS J18550913-1813009,283.788029,-18.216919,4249.00,0.56,0.63,12.446,-32.900,27.700,
  

  ---

  Re 218796935 from Hans Martin's list: known slightly eccentric binary V1108 Sgr per VSX.
  

  s1=2480.09 p1=46.5816 d1=0.95 (22.8 hours +/-)
  
  s2=2504.19 p2=46.5816 d2=0.60 (14.4 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218796935 , 2MASS J19124363-1808120 , 10.873 , 10.758 , 10.679 , 0.115 , 0.079 , ('F0V', 1.58) , ('G5V',0.98)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218796935 288.1818 -18.1367 0.0 11.515 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218796935,2MASS J19124363-1808120,288.181809,-18.136668,7762.00,2.64,2.04,11.515,2.400,-1.300,
  

  From VSX:
  

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Non-variable V1108 Sgr 000-BFF-565 19 12 43.64 -18 08 12.0 Sgr EA/DS 46.5816 11.6 - 12.8 p
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=28808

  Listed as V* V1108 Sgr -- Eclipsing binary of Algol type (detached) on Simbad, Proper motions mas/yr: 2.4 -1.3, 19 12 43.634 -18 08 12.00

  ---

  Re 218803648 from Hans Martin's list: known binary V1034 Sgr on VSX. Also neither of the nearby EPIC show any contamination from this possible source.
  

  s1=2472.535 p1=14.0532 d1=0.75 (18.0 hours +/-)
  
  s2=2479.537 p2=14.0532 d2=0.75 (18.0 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218803648 , 2MASS J18550817-1807256 , 10.649 , 10.091 , 9.949 , 0.558 , 0.142 , ('K4V', 0.78) , ('K5V',0.75)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218803648 283.7841 -18.1238 0.0 12.464 7
  
  218800634 283.8026 -18.1296 66.65 11.958 7
  
  218785608 283.7814 -18.1581 123.72 12.905 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218803648,2MASS J18550817-1807256,283.784082,-18.123790,4783.00,17.14,0.88,12.464,-1.300,-4.900,
  

  From VSX:
  

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable V1034 Sgr 000-BFF-496 18 55 08.18 -18 07 25.6 Sgr EA 14.0532 12.88 - 13.60 V
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=28734

  ---

  Re 218973982 from Hans Martin's list: slightly eccentric smaller dwarf binary or a blend with transit depths of 2.53% and 2.08%.
  

  s1=2470.55 p1=9.772 d1=0.1 (2.4 hours +/-)
  
  s2=2475.39 p2=9.772 d2=0.1 (2.4 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218973982 , 2MASS J19153859-1747511 , 15.558 , 14.821 , 14.607 , 0.737 , 0.214 , ('M8V', 0.082) , ('M0V',0.58)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218973982 288.9108 -17.7975 0.0 18.055 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218973982,2MASS J19153859-1747511,288.910794,-17.797546,4673.00,0.73,0.79,18.055,,,
  

  ---

  Re 218976209 from Hans Martin's list: known binary listed as ASAS J193030-1747.6 on VSX.
  

  s1=2468.56 p1=1.54738 d1=0.1 (2.4 hours +/-)
  
  s2=2469.334 p2=1.54738 d2=0.1 (2.4 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  218976209 , 2MASS J19303046-1747342 , 11.211 , 10.897 , 10.829 , 0.314 , 0.068 , ('G6V', 0.97) , ('G0V',1.09)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  218976209 292.6269 -17.7929 0.0 12.428 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  218976209,2MASS J19303046-1747342,292.626936,-17.792866,5999.00,1.53,1.14,12.428,8.300,-4.800,
  

  From VSX:
  

  Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
  
  0.00 Variable ASAS J193030-1747.6 -- 19 30 30.46 -17 47 34.2 Sgr ED 1.54738 12.63 (0.62) V
  

  http://www.aavso.org/vsx/index.php?view=detail.top&oid=115745

  ---

  Re 219079334 from Hans Martin's list: appears to be a binary with transit depths of 40.5% and 37.5%. And none of the nearby EPICs have this transit.
  

  s1=2468.97 p1=3.716 d1=0.16 (3.84 hours +/-)
  
  s2=2470.83 p2=3.716 d2=0.16 (3.84 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219079334 , 2MASS J19134866-1734147 , 11.725 , 11.361 , 11.305 , 0.364 , 0.056 , ('G8V', 0.94) , ('F5V',1.32)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219079334 288.4528 -17.5708 0.0 12.781 7
  
  219065935 288.4372 -17.6003 118.96 11.691 7
  
  219092498 288.4818 -17.5422 143.1 12.833 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219079334,2MASS J19134866-1734147,288.452797,-17.570770,5868.00,1.18,1.00,12.781,18.900,9.100,
  

  ---

  Posted July 13, 2016 1:30 PM

• by ajamyajax

  Just a few more added constraints and identifications for likely C7 binaries and other targets...

  Re 219156161 from Hans Martin's list: appears to be a binary with V-shaped transit depths of 21.0% and 22.3%.
  
  

  s1=2469.337 p1=2.47341 d1=0.27 (6.48 hours +/-)
  
  s2=2470.577 p2=2.47341 d2=0.2 (4.8 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219156161 , 2MASS J19102873-1724109 , 10.031 , 9.878 , 9.846 , 0.153 , 0.032 , ('F3V', 1.43) , ('A1V',2.2)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219156161 287.6197 -17.4031 0.0 10.912 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219156161,2MASS J19102873-1724109,287.619734,-17.403053,7000.00,2.10,1.68,10.912,-3.400,4.600,
  

  

  ---

  Re 219245679 from Hans Martin's list: looks like an eccentric binary with transit depths of 12.81% and 7.31%. And the nearby EPICs do not show any sign of this transit.
  

  s1=2472.92 p1=16.077 d1=0.145 (3.48 hours +/-)
  
  s2=2481.795 p2=16.077 d2=0.12 (2.88 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219245679 , 2MASS J19141120-1712092 , 14.806 , 14.194 , 13.902 , 0.612 , 0.292 , ('K6V', 0.7) , ('M4V',0.24)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219245679 288.5467 -17.2026 0.0 17.196 7
  
  219244917 288.5229 -17.2042 82.12 13.219 7
  
  219260185 288.5324 -17.1696 128.57 14.729 7
  
  219227739 288.5534 -17.2431 147.6 14.087 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219245679,2MASS J19141120-1712092,288.546672,-17.202578,4597.00,2.43,0.86,17.196,,,
  

  ---

  Re 219340893 from Hans Martin's list: appears to be a slightly eccentric binary or a blend with transit depths of 7.63% and 0.24%
  

  s1=2472.88 p1=11.117 d1=0.13 (3.12 hours +/-)
  
  s2=2478.895 p2=11.117 d2=0.13 (3.12 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219340893 , 2MASS J19111962-1658596 , 11.076 , 10.739 , 10.656 , 0.337 , 0.083 , ('G6V', 0.97) , ('G8V',0.94)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219340893 287.8318 -16.9833 0.0 12.192 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219340893,2MASS J19111962-1658596,287.831776,-16.983265,5971.00,1.53,1.10,12.192,9.800,-9.000,
  

  ---

  Re 219760360 from Hans Martin's list: looks like a blended binary with a transt depth of 1.6%, and a possible secondary. But no obvious sign of contamination in nearby EPICs.
  

  s1=2469.15 p1=1.41 d1=0.08 (1.92 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219760360 , 2MASS J19133312-1553332 , 11.932 , 11.486 , 11.361 , 0.446 , 0.125 , ('K3V', 0.81) , ('K3V',0.81)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219760360 288.388 -15.8926 0.0 13.355 7
  
  219752244 288.364 -15.9164 119.44 17.342 7
  
  219749108 288.3855 -15.9258 119.85 13.675 7
  
  219754034 288.4187 -15.9112 125.81 18.478 7
  
  219759465 288.3483 -15.8953 137.89 12.813 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219760360,2MASS J19133312-1553332,288.388012,-15.892572,5273.00,3.27,0.88,13.355,-3.800,-12.100,
  

  ---

  Re 219394517 from Hans Martin's list: single V-shaped binary looking transit here with a depth of 6.04%. An alternating fit did not show any offsets, but could be two stars of equal size and double the period. Also no sign of contamination in nearby 219408090.
  

  s1=2469.73 p1=3.26381 d1=0.1533 (3.68 hours +/-)
  

  EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
  
  219394517 , 2MASS J19152465-1651222 , 10.205 , 9.898 , 9.800 , 0.307 , 0.098 , ('G4V', 0.99) , ('K1V',0.86)
  

  From NEA, K2 Targets within search area:
  
  EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
  
  219394517 288.8527 -16.8562 0.0 11.273 7
  
  219408090 288.849 -16.8237 117.65 12.956 7
  

  epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
  
  219394517,2MASS J19152465-1651222,288.852737,-16.856224,5911.00,1.23,1.05,11.273,-3.600,-28.300,
  

  

  Posted July 13, 2016 1:36 PM

• by Shellface

  EPIC 214787262: DE requested that I take a look at this star. It appears to be a nearby mid-M dwarf with a small transiter, a combination which has some considerable significance.

  For an M-dwarf, this star is rather bright (V = 13.6, Kep = 12.5). The colour indices of the star all give a spectral type of M3.5 ± 0.5 (~3300 ± 100 K), which combined with the brightness indicates a distance of only ~30 parsecs. Though reddening in C7 is significant, this star is so nearby that it is likely to be within the Local Bubble, so the interstellar medium is not an issue (Huber et al. adopt E(B-V) = 0.009, which is smaller than the colour errors).

  As usual for an M-dwarf the Huber et al. parameters are largely incorrect, though their Teff = 3432 ± 189 K is reasonable. M3 and M4 span a ~40% decrease in stellar mass and radius, so even though the spectral type is well-constrained the stellar parameters are not.

  I turn to literature M-dwarf colour-parameter relations for the first time. I use Equation 7 of Mann et al. (2015) (In V-J) to derive Teff = 3380 ± 100 K. From photometric relation shown in Newton et al. (2013) I estimate Fe/H ≈ 0.20 ± 0.15 dex (most of the error stems from the 2MASS uncertainties). The Teff and Fe/H combine according to the (Teff + Fe/H)-R relationship of Mann et al. to give 0.38 ± 0.05 Rsol. As there is currently no good distance measurement for the star I do not attempt to find its mass analytically, but it is probably similar in magnitude to the radius.

  Campaign 7 is much more crowded than most fields owing to its placement near the galactic centre, so blending is generally problematic. SDSS data is not available for the area presumably for that reason, which compounds the blending issue. Still, in this case, there are no apparent contaminators within 20" in 2MASS or the EPIC. The shallow transit depth means that they could be associated with a star too faint to detect, but the probability of this is not high. The transits are also a good match for an M-dwarf host, which supports their association with the target star.

  The out-of-transit Kepler lightcurve shows significant rotational variability. Though the period is long compared to the observation duration, the high S/N allows for a rotational period determination, P = 43 days. This is intermediate for a mid-M dwarf, and suggests an age of a few Gyr. Several flares are visually detectable in the lightcurve as well, which is not unusual for an M-dwarf. Though the stellar activity will very likely impart a signal in radial velocities, the rotational period is very different from the orbital period (Prot/Porb ≈ 5.2) so it should not greatly affect the detectability of the companion signal.

  The transits are not treated well in the Vanderburg reduction, with several being malformed. Of the ten transits present, six are in a useable state. As the star is cooler than the limit for EXOFAST, kindly do not take the second-order parameters shown below at face value:

  

  The increased variability during transit is undoubtedly an artifact of the treatment of the transits in the processing. Despite this the overall rms is 100 ppm, which is quite good for a Kep = 12.5 star.

  The transit shape is too poorly resolved to determine the impact parameter to any real significance, but the ratio between the observed transit duration and the expected duration for a reasonable stellar density indicates b ≈ 0.4. This is small enough that limb darkening does not significantly affect the transit depth, so the (r/R)^2 approximation should be valid.

  For a transit depth of 900 ± 30 ppm, r/R = 0.0300 ± 0.0005. For R = 0.38 ± 0.05 Rsol, r = 1.24 ± 0.18 Rearth. At such a small radius the companion would be terrestrial, a radius range which is very infrequently reached by K2. The insolation of the companion is ~5 times that of Earth - very likely too high to be habitable, but much lower than most K2 planets.

  For a terrestrial composition the companion mass would be ~2 Mearth, and the RV semi-amplitude would be 1.3 m/s. On a V = 13.6 star this is unreachable with modern spectrographs, but it should be possible to detect in within a decade or two. As an M-dwarf the star is much brighter in the infrared (K = 8.9), so near-future IR radial velocities may be capable of the detection as well. Atmospheric detection by the James Webb Space Telescope is not implausible, but qualitative values are beyond my knowledge.

  This system is an excellent example of K2's ability. K1 observed very few mid-late-M dwarfs because reasonably bright examples of such stars are uncommon. K2 has a major advantage in luminosity-limited sampling due to its observations of much more of the sky, allowing it to observe comparatively brighter objects at every level - which is especially important for M-dwarfs. Discoveries of very small planets like this one are important for a great many reasons which need not be restated, and this object is an excellent example of one around a star around-about bright enough for follow-up.

  Posted August 9, 2016 3:04 AM

• by zoo3hans in response to ajamyajax's comment.

  EPIC 218916923 is now confirmed as a warm Jupiter planet in https://arxiv.org/abs/1702.00691

  Posted February 3, 2017 8:33 AM

• by JKD in response to zoo3hans's comment.

  thanks for checking the publications

  Posted February 3, 2017 7:40 PM

• by zoo3hans in response to Dolorous_Edd's comment.

  EPIC 215969174 is now confirmed as a Hot Jupiter in https://arxiv.org/abs/1706.03858

  Posted June 14, 2017 7:51 PM