C12 K2 Finds

by ajamyajax

Of course the TRAPPIST-1 planets already a great find, but looks like we can start out c12 with this news:

"K2 Observations of TRAPPIST-1 to be released Tuesday March 7th"

http://archive.stsci.edu/archive_news/2017/03-Mar/index.html #article1

As always,

More grateful acknowledgements for our amateur astronomy research published here:

"This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program."

"Some/all of the data presented in this research were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts."

Posted March 4, 2017 3:44 PM
by Artman40

Campaign 12 ended. Data is currently being downlinked.

Posted March 5, 2017 5:03 AM
by Artman40

https://twitter.com/GeertHub/status/839154952060559360

Data release deiayed for a day because of strong winds in Goldstone and rain in Madrid.

Posted March 7, 2017 7:33 PM
by Artman40

https://keplerscience.arc.nasa.gov/raw-data-for-k2-campaign-12-and-trappist-1-now-available.html

Raw data for K2 Campaign 12 and TRAPPIST-1 now available.

Come and get it while it's hot! Also, are transit light curves of 6 planets with known period inaccurate because of faintness of the star or because the data is not properly processed yet?

Posted March 8, 2017 4:24 PM
by zoo3hans in response to Artman40's comment.

Well, my first LC with the help of Mark Omohundro

P001 PlanetaryTransit 1 200164267 2939.133300 2939.139400 0.000000000000 334580

P007 PlanetaryTransit7 1 200164267 2941.310800 2941.348300 0.000000000000 603431

P005 PlanetaryTransit5 1 200164267 2952.216800 2952.243500 0.000000000000 634769

P003 PlanetaryTransit3 1 200164267 2972.044300 2972.056600 0.000000000000 749063

P004 PlanetaryTransit4 1 200164267 2951.312400 2951.330800 0.000000000000 584539

P002 PlanetaryTransit2 1 200164267 2952.413800 2952.423300 0.000000000000 485938

P001 PlanetaryTransit6 1 200164267 2960.266400 2960.273200 0.000000000000 622192

P008 PlanetaryTransit8 1 200164267 2961.074200 2961.102800 0.000000000000 728115

P.S. After looking at the short cadence data provided by Chelsea Huang I think most of these "transits" are just artefacts. Maybe 3,5,6,7 are still opf interest.

Posted March 8, 2017 9:38 PM
by Artman40

Were there simultaneous Spitzer/Kepler observations of transiting planets? If so, does it take three months for Spitzer data to become available?

Posted March 9, 2017 4:00 AM
by zoo3hans

Looking at Andrews long cadence LC I can at least identify planet b, c, d, e, f, g:

EPIC 200164267, P=1.51087 days, starting at BKJD 2906.52, duration 1.5 hours, depth 0.0078 (planet b)

EPIC 200164267, P=2.4218 days, starting at BKJD 2907.53, duration 1.5 hours, depth 0.0055 (planet c)

EPIC 200164267, P=4.0496 days, starting at BKJD 2905.98, duration 1.5 hours, depth 0.0054 (planet d)

EPIC 200164267, P=6.0996 days, starting at BKJD 2906.66, duration 2.5 hours, depth 0.0034 (planet e)

EPIC 200164267, P=9.20669 days, starting at BKJD 2912.02, duration 2.5 hours, depth 0.0081 (planet f)

EPIC 200164267, P=12.3529 days, starting at BKJD 2906.49, duration 2.5 hours, depth 0.0070 (planet g)

EPIC 200164267, P=16.55 days, starting at BKJD 2906.83, duration 3,5 hours, depth 0.0072 (planet X)

EPIC 200164267, P=19.9739 days, starting at BKJD 2923.70, duration 3.5 hours, depth 0.0076 (maybe planet h)

EPIC 200164267, P=26.74 days, starting at BKJD 2923.195, duration 1.5 hours, depth 0.0099 (planet Y), mentioned by Ivan

Posted March 9, 2017 3:01 PM
by ajamyajax

Andrew, many thanks!... Very nice corrections. And the NEA ephemeris values here might also be helpful:

[ TRAPPIST-1: 0.117 R_Sun, 0.0802 M_Sun, 2559 Teff ]

TRAPPIST-1 b, P=1.510848, AU=0.01111, Inclination=89.41, Eccentricity=0, Depth (perc)=0.754, Duration (days)=0.02508, Duration (hours)=0.602, Mid-Point (days)=2457322.51765

2457322.51765 - 2454833 = 2489.51765 BKJD

TRAPPIST-1 c, P=2.421848, AU=0.01522, Inclination=89.50, Eccentricity=0, Depth (perc)=0.672, Duration (days)=0.02901, Duration (hours)=0.6963, Mid-Point (days)=2457362.72618

2457362.72618 - 2454833 = 2529.72618 BKJD

TRAPPIST-1 d, P=4.049610, AU=0.02144, Inclination=89.75, Eccentricity=<0.070, Depth (perc)=0.367, Duration (days)=0.03412, Duration (hours)=0.8188, Mid-Point (days)=2457670.14165

2457670.14165 - 2454833 = 2837.14165 BKJD

TRAPPIST-1 e, P=6.099615, AU=0.02817, Inclination=89.86, Eccentricity=<0.085, Depth (perc)=0.519, Duration (days)=0.03973, Duration (hours)=0.9535, Mid-Point (days)=2457660.37859

2457660.37859 - 2454833 = 2827.37859 BKJD

TRAPPIST-1 f, P=9.206690, AU=0.0371, Inclination=89.680, Eccentricity=<0.063, Depth (perc)=0.673, Duration (days)=0.04346, Duration (hours)=1.043, Mid-Point (days)=2457671.39767

2457671.39767 - 2454833 = 2838.39767 BKJD

TRAPPIST-1 g, P=12.35294, AU=0.0451, Inclination=89.710, Eccentricity=<0.061, Depth (perc)=0.782, Duration (days)=0.04750, Duration (hours)=1.140, Mid-Point (days)=2457665.34937

2457665.34937 - 2454833 = 2832.34937 BKJD

TRAPPIST-1 h, P=20, AU=0.063, Inclination=89.80, Eccentricity=null, Depth (perc)=0.3520, Duration (days)=0.05333, Duration (hours)=1.280, Mid-Point (days)=2457662.55463

2457662.55463 - 2454833 = 2829.55463 BKJD

From:

http://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=trappist+1+b&type=CONFIRMED_PLANET

Posted March 9, 2017 3:14 PM
by ajamyajax

All right, here is a light curve time sequence from Andrew's first corrected dataset for TRAPPIST-1 EPIC 200164267 with all known planet transits highlighted. Those of you without software could possibly spot even more new planets here in true PlanetHunters.org style with your keen eyesight. Best of luck!

Posted March 9, 2017 4:53 PM
by Dolorous_Edd

Long shot, but how about dip at 2949.8? and 2976.69 and period 26.74? starting from 2923.20

and also dips at 2919.34 and 2920.51 ; and period 1.164700 ?

interesting dips: incomplete dip at 2983.76? aslo at 2924.17 ; 2928.25 ; and 2944.72

Edit

maybe also 2953.05 and 2978.12 and period ~25.05

interesting dips at 2924.17 and 2966.16; 2967.57

Posted March 9, 2017 5:36 PM
by zoo3hans in response to Dolorous_Edd's comment.

P=26.74 days might work, starting at BKJD 2923.19, duration only 1.5 hours, depth 0.0099, so maybe grazing transit.

Posted March 9, 2017 7:09 PM
by Dolorous_Edd

EPIC 246018746 - dip at 2939.189 another at 2959.09 ( this one is a glitch ); possible transit with 11.157d period; start from 2959.09

EPIC 246375295 aka WASP 28 - maybe addtional dip at 2983.51? and also 2943.71 and 2917.04

246053567 - maybe dips at 2922.21 and 2950.82 ~period 28.62

Posted March 9, 2017 8:53 PM
by zoo3hans in response to Dolorous_Edd's comment.

EPIC 246375295 aka WASP 28 P=3.4087 days, starting at BKJD 2908.35, duration 3.9 hours, depth 0.014. Maybe additional planet with P2=24.53 days, starting at BKJD 2923.64, duration 3.4 hours, depth 0.0021.

Posted March 9, 2017 9:21 PM
by ajamyajax

Re 60017806/246375295 from the K2 Engineering and our c12 lists: and as mentioned, this is WASP-28b an inflated Jupiter-mass planet.

s1=2908.357 p1=3.4088 d1=0.1349 (3.2376 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)

246375295 , 2MASS J23342787-0134482 , 11.078 , 10.762 , 10.732 , 0.316 , 0.03 , ('G5V', 0.98) , ('A0V',2.3)

60017806 , 2MASS J23342787-0134482 , 11.078 , 10.762 , 10.732 , 0.316 , 0.03 , G , ('G5V', 0.98) , ('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

246375295 353.6162 -1.58 0.04 11.933 12

60017806 353.6162 -1.5801 0.12 11.500 E

epic_number,tm_name,ra,dec,NEA_teff,NEA_rad,NEA_mass,k2_kepmag,k2_pmra,k2_pmdec,NEA_dist

246375295,2MASS J23342787-0134482,353.616168,-1.580036,6150,1.094,1.021,11.933,21.500,9.100, 410±70

Posted March 10, 2017 8:09 PM
by tommi59 in response to zoo3hans's comment.

I do not think so the length of transit 20 days period does not suit well for tentative h I would bet 26 days period rather or more distant planet with high impact parameter

Posted March 10, 2017 9:33 PM
by zoo3hans in response to tommi59's comment.

I must agree that in the short cadence data it does NOT look convincing. Your explanation sounds better.

Posted March 11, 2017 8:50 AM
by Dolorous_Edd

Frome the SC data

Interesting dips 2913.63; 2914.00; 2967.91

2907.63; 2910.98; 2914.00; 2914.01 ;2918.74 ; 2937.699 ; 2948.63 ; 2952.99

maybe 2907.63; 2910.98; and period ~3.345500d ?

or 2907.63 and 2948.63 period 40.99?

2914.01 ;2918.74 and period ~4.73 ?

2907.48 and 2907.92 ; period ~0.44d ?

Posted March 11, 2017 6:03 PM
by tommi59

Likely we have to look for additional planets with periods longer than 30 days .Periods 20 days looks ok and 26.74 (I guess planet h) as well but 16.55 is doubtful.

Posted March 11, 2017 7:42 PM
by zoo3hans in response to tommi59's comment.

Yes, maybe we have something at BKJD 2966.234-2966.401 (about 4 hours duration) for example. But very short period ones seem to be possible too I think, see Ivan's (Dolorous_Edd) comment above.

Posted March 11, 2017 7:55 PM
by ajamyajax

Ok, just started fitting some of the Trappist-1 planets and candidates and I hope you all do, as well! These charts are planets b,c,d,e from Andrew's LC data:

Posted March 11, 2017 8:01 PM
by zoo3hans in response to ajamyajax's comment.

By the way, when we look at the SC data, we see that the real period for planet_b is rather around 1.51095 days for example.

Posted March 11, 2017 8:20 PM
by tommi59

Considering stability of the system there is no space for additional planets with periods shorter than 16 days I mean anywhere between currently known.

Posted March 11, 2017 8:23 PM
by Shellface

Looks like I've been missing the party! I must apologise for being late once again.

I would like to remind everyone that the recent paper is open-access through ESO and arXiv, and there is a great deal of important information included within it.

Though the Spitzer data has not been made public as far as I know, it is plotted in the paper (image link). The Spitzer data is a lot more precise than the K2 data, so it is far easier to observe the presence or absence of transits. Please use this to test whether planet candidates seen in the K2 data are plausible.

Additionally, efg have considerable (>10 minute) TTVs (image link). These must rack up considerably over the 70-day K2 series, so constant-period ephemerides will not describe the transits of these planets well.

Posted March 11, 2017 8:39 PM
by zoo3hans in response to Shellface's comment.

Very good information. Thanks Shellface.

Posted March 11, 2017 9:18 PM
by zoo3hans in response to Shellface's comment.

Maybe of use : http://www.nature.com/nature/journal/v542/n7642/fig_tab/nature21360_F1.html

Offset of the times of the Spitzer data is -4833 days (they used 2450000 as the baseline where K2 uses 2454833)

Posted March 11, 2017 9:27 PM
by Shellface in response to zoo3hans's comment.

Excellent work! The "download excel source data" link (hotlink) contains the detrended Spitzer data used in the paper. This is hugely valuable.

For comparisons between the Spitzer and K2 data, remember that K2 dates are (barycentric julian days - 2454833), while the Spitzer dates used here are (barycentric julian days - 2457600).

Posted March 11, 2017 9:42 PM
by zoo3hans in response to Shellface's comment.

Hm, I wanted to do this comparison with the Spitzer data in any case. I had to sort the data to see all the transits well though.

Posted March 11, 2017 11:00 PM
by ajamyajax in response to zoo3hans's comment.

Just looked at the first Spitzer file, but I think about an 87 day difference from when that light curve and TRAPPIST-1 observed in K2 C12. And 87 days (earlier) not exact so with a minor time adjustment I got close with this which gets you a near match for the epoch minus all those period values back ~87 days.

Spitzer time (e.g. 7650.847411) - 4832.485411 + 0.51 = ~ matching BKJD to the K2 C12 observations.

And you can tweak it from there of course.

And the Spitzer transit quality is mighty nice, too!

Posted March 12, 2017 3:39 AM
by zoo3hans in response to ajamyajax's comment.

Yes, the offset is 87.515 days, but to move the Spitzer data to the K2 times, I had to substract 4833 from the values given in the Spitzer Excel file. So I can see the Spitzer data in the BKJD times, and I can directly compare the transit dates found in the K2 short cadence data to the ones found by Spitzer.

zoom (planets d and e) :

At least I finally was able to retrieve all Spitzer transits (except planet h, which I have not correctly found so far in the K2 data). Interestingly the planet candidate with period 26.736 does not show in the Spitzer lightcurve, so maybe it just fell outside of the 20-day window of Spitzer. By the way, I checked only the Spizer data, not the ground data so far.

The "zero-point" of planet h is BKJD 2829.554 (taken from the Spitzer data).

Posted March 12, 2017 9:26 AM
by zoo3hans in response to tommi59's comment.

I could nail down the K2 date of the Spitzer transit of plant h : it's BKJD 2829.554. So far I could not identify the corresponding dips in the K2 SC data, but maybe we have a long period transit at BKJD 2966.322, it seems NOT to belong to planet h though.

Posted March 12, 2017 12:17 PM
by zoo3hans

Maybe I have finally found planet h :

h001 PlanetaryTransith 1 200164267 2927.317915 2927.380579 32.60100000000 14235

i.e. P=32.601 days, at BKJD 2829.5256 (Spitzer), BKJD 2927.35 and BKJD 2959.951 (K2 C12).

Posted March 12, 2017 1:19 PM
by Dolorous_Edd

How about dips at 2953.05 and 2978.12 ? and period ~25?

Posted March 12, 2017 2:36 PM
by Artman40

Is photometric precision of light curve expected to improve significantly with calibrated data?

Posted March 12, 2017 2:56 PM
by zoo3hans in response to Artman40's comment.

Probably yes. I expect that the precision of the short cadence data should be able to reach the quality of the Spitzer data with proper corrections and skillful detrending.

I try to have a look a the Python scripts of Chelsea Huang, but as I have basically no idea about Python it will cost me a few days at best...

Posted March 12, 2017 4:02 PM
by tommi59 in response to zoo3hans's comment.

Periods 20 days ,26.74 and 32.6 for potential planets would have resonances 8:6:5 almost perfect 4:3 and very close to 6:5 such orbits not very likely but still possible

Posted March 12, 2017 5:40 PM
by tommi59 in response to Dolorous_Edd's comment.

Looks like transits but there is definitely no transit at around 2928 to have 25 days period so possible long period planets

Posted March 12, 2017 5:48 PM
by zoo3hans

I tried also AKO for Trappist-1 K2 data, here is the result (only planets b-g are visible, h is only 2 transits...):

planet_b 1.511 days

planet_c 2.422 days

planet_d 4.0505 days

planet_e 6.0996 days

planet_f 9.2095 days

planet_g 12.3529 days

Posted March 12, 2017 9:09 PM
by zoo3hans

I try to summarize once more the possible transits of planets around Trappist-1 (EPIC 200164267) in the following table (useful as input to LcViewer's Signals):

b001 PlanetaryTransitb 1 200164267 2906.500560 2906.528050 1.510950000000 12149

c001 PlanetaryTransitc 1 200164267 2907.507570 2907.546400 2.421900000000 19182

d001 PlanetaryTransitd 1 200164267 2905.960700 2906.022020 4.049700000000 13959

e001 PlanetaryTransite 1 200164267 2906.634350 2906.701100 6.099600000000 14535

f001 PlanetaryTransitf 1 200164267 2912.006340 2912.056070 9.206690000000 19780

g001 PlanetaryTransitg 1 200164267 2906.440220 2906.539900 12.352940000000 21542

x001 PlanetaryTransithh 1 200164267 2923.156700 2923.235000 26.736000000000 12166

h001 PlanetaryTransith 1 200164267 2829.525629 2829.582545 0.000000000000 6196

P006 PlanetaryTransit6 1 200164267 2927.317915 2927.380579 32.601000000000 14235

P001 PlanetaryTransit 1 200164267 2908.465886 2908.490406 0.000000000000 9694

P002 PlanetaryTransit2 1 200164267 2966.235746 2966.398534 0.000000000000 10817

P003 PlanetaryTransit3 1 200164267 2937.401898 2937.429824 0.000000000000 12112

P004 PlanetaryTransit4 1 200164267 2931.434605 2931.519061 0.000000000000 11326

P005 PlanetaryTransit5 1 200164267 2952.216800 2952.243500 0.000000000000 9625

P007 PlanetaryTransit7 1 200164267 2941.310800 2941.348300 0.000000000000 5209

P008 PlanetaryTransit8 1 200164267 2969.462893 2969.571191 0.000000000000 13631

P009 PlanetaryTransit9 1 200164267 2966.596058 2966.617854 0.000000000000 13256

Transits b001 up to g001 are rather certain (known planets b up to g), x001 is a candiate with a found period (by Ivan), h001 is the Spitzer transit of planet_h, P006 is the same object in the K2 data (at least to my interpretation), the rest are single dips which might or might not be additional candidates.

First column is just a name, second column is a name for the feature, third one is just 1 or 2 (means primary feature or not), 4th is EPIC number, 5th is start date of feature (BKJD), 6th is end date (BKJD), 7th is period (in hours, 0.0 if nothing is found), 8th colum is a code number for the color in the plot.

Regards, Hans Martin

Posted March 13, 2017 8:36 PM
by Artman40

Looks like the first post-Kepler observation TRAPPIST-1 paper was rushed out in less than 1 week after raw Kepler data became available.

https://arxiv.org/abs/1703.04166

"A terrestrial-sized exoplanet at the snow line of TRAPPIST-1"

Apparently, the period of TRAPPIST-1h is 18.764 days, its radius was constrained to 0.715 Earth radii and equilibrium temperature to -104.15°C.
This means we might have our first cold Earth.

Also, star's rotation period was measured to be 3.3 days. Its age is now estimated to be 3-8 billion years.

No additional planets were detected.

However, someone else found this:

https://i58.servimg.com/u/f58/19/64/40/24/pl_h10.jpg

Maybe they should have waited with the paper.

Posted March 14, 2017 3:44 AM
by zoo3hans in response to Artman40's comment.

Nice paper. It seems that one transit of planet_h is hidden in a flare, and one is inside a transit of planet_b, no wonder I got its period wrong then...

Posted March 14, 2017 8:24 AM
by Shellface

However, someone else found this:

https://i58.servimg.com/u/f58/19/64/40/24/pl_h10.jpg

Maybe they should have waited with the paper.

Eh? That's h…

h's period being towards the lower end of its previous bounds leaves the inner system dynamically "full", meaning there is very likely no room for further planets with periods below ~24 days. However, it is possible that there are additional planets somewhere beyond this. The transits of such a planet would have to be similarly shallow as h's and must be rather infrequent to have avoided detection so far, and it would also have to have not transited during Spitzer observations.

The odds are slim, but some further work on TRAPPIST-1 could be worthwhile.

Posted March 14, 2017 8:41 PM
by Dolorous_Edd

The guys who wrote the paper about planet h made their LC public , if somebody is interested

https://github.com/rodluger/trappist1

Maybe worthwhile to check if there is a possible signal with 26.73 d period present in their LC, or any other signal

Posted March 14, 2017 8:43 PM
by zoo3hans in response to Dolorous_Edd's comment.

Well, I cannot run the code under python-2.7 and Ubuntu-16.04 LTS, it crashes on generating the FITS files:

03/14/17 20:31:23 INFO [everest.detrender.init()]: Initializing nPLDTrappist model for 200164267.

03/14/17 20:31:24 INFO [everest.detrender.setup()]: Loading data for neighboring target 246165150...

03/14/17 20:31:24 INFO [everest.detrender.setup()]: Loading data for neighboring target 246211745...

03/14/17 20:31:24 INFO [everest.detrender.setup()]: Loading data for neighboring target 246171759...

03/14/17 20:31:24 INFO [everest.detrender.setup()]: Loading data for neighboring target 246127507...

03/14/17 20:31:24 INFO [everest.detrender.setup()]: Loading data for neighboring target 246228828...

03/14/17 20:31:24 INFO [everest.detrender.setup()]: Loading data for neighboring target 206392586...

03/14/17 20:31:24 INFO [everest.detrender.setup()]: Loading data for neighboring target 246121678...

03/14/17 20:31:24 INFO [everest.detrender.setup()]: Loading data for neighboring target 246229336...

03/14/17 20:31:24 INFO [everest.detrender.setup()]: Loading data for neighboring target 246196866...

03/14/17 20:31:24 INFO [everest.detrender.setup()]: Loading data for neighboring target 246217553...

03/14/17 20:31:24 INFO [everest.detrender.setup()]: Loading data for neighboring target 246239441...

03/14/17 20:31:24 INFO [everest.detrender.setup()]: Loading data for neighboring target 246144695...

03/14/17 20:31:24 INFO [everest.detrender.run()]: Loading target data...

03/14/17 20:31:24 INFO [everest.basecamp.plot_aperture()]: Plotting the aperture...

03/14/17 20:31:24 INFO [everest.detrender.run()]: nPLDTrappist (Raw): CDPP = 806.97 ppm / 874.47 ppm / 949.42 ppm (871.74 ppm)

03/14/17 20:31:24 INFO [everest.detrender.get_outliers()]: Clipping outliers...

03/14/17 20:31:24 INFO [everest.detrender.get_outliers()]: Iter 0/20: 0 outliers

03/14/17 20:31:24 INFO [everest.basecamp.compute()]: Computing the model...

... and so on, until ...

03/14/17 20:45:05 INFO [everest.basecamp.compute()]: Computing the model...

03/14/17 20:45:08 INFO [everest.detrender.run()]: nPLDTrappist (3/3): CDPP = 292.92 ppm / 303.69 ppm / 293.30 ppm (294.03 ppm)

03/14/17 20:45:11 INFO [everest.detrender.save_model()]: Saving data to 'nPLDTrappist.npz'...

03/14/17 20:45:13 INFO [everest.fits.MakeFITS()]: Generating FITS file...

03/14/17 20:45:13 ERROR [everest.utils.ExceptionHookPDB()]: TypeError: data type not understood

03/14/17 20:45:13 ERROR [everest.utils.ExceptionHookPDB()]: File "trappist1.py", line 457, in PlotFolded()

03/14/17 20:45:13 ERROR [everest.utils.ExceptionHookPDB()]: File "trappist1.py", line 38, in PlotFolded star = LongCadenceLightcurve()

03/14/17 20:45:13 ERROR [everest.utils.ExceptionHookPDB()]: File "/home/t7321/util/trappist1-master/data.py", line 585, in LongCadenceLightcurve fitsfile = Publish(model)

03/14/17 20:45:13 ERROR [everest.utils.ExceptionHookPDB()]: File "/home/t7321/util/trappist1-master/data.py", line 535, in Publish everest.fits.MakeFITS(star)

03/14/17 20:45:13 ERROR [everest.utils.ExceptionHookPDB()]: File "/usr/local/lib/python2.7/dist-packages/everest/fits.py", line 309, in MakeFITS lightcurve = LightcurveHDU(model)

03/14/17 20:45:13 ERROR [everest.utils.ExceptionHookPDB()]: File "/usr/local/lib/python2.7/dist-packages/everest/fits.py", line 170, in LightcurveHDU hdu = pyfits.BinTableHDU.from_columns(cols, header = header, name = 'ARRAYS')

03/14/17 20:45:13 ERROR [everest.utils.ExceptionHookPDB()]: File "/usr/lib/python2.7/dist-packages/pyfits/hdu/table.py", line 121, in from_columns data = FITS_rec.from_columns(coldefs, nrows=nrows, fill=fill)

03/14/17 20:45:13 ERROR [everest.utils.ExceptionHookPDB()]: File "/usr/lib/python2.7/dist-packages/pyfits/fitsrec.py", line 328, in from_columns raw_data = np.empty(columns.dtype.itemsize * nrows, dtype=np.uint8)

03/14/17 20:45:13 ERROR [everest.utils.ExceptionHookPDB()]: File "/usr/lib/python2.7/dist-packages/pyfits/util.py", line 245, in get val = self._fget(obj)

03/14/17 20:45:13 ERROR [everest.utils.ExceptionHookPDB()]: File "/usr/lib/python2.7/dist-packages/pyfits/column.py", line 1445, in dtype return nh.realign_dtype(np.dtype(fields), offsets)

Posted March 14, 2017 8:56 PM
by Dolorous_Edd

TRAPPIST-1

Looking at EVEREST Lc

How about dip at 2908.69 and period 26.166 ?

The rest of C12 candidates , from preview files of Mark Omohundro, also thanks to Al Schmitt (HEK) for his LcViewer :

I will start from the beginning

PC

246365896 - dips with period 0.530d ( or half of that ): likely EB

246389308 - single dip at 2909.94; it is a EB secondary at 2918.7

246375295 - WASP 28

246347783 - maybe single dip at 2909.27

246332357 - period 1.427 ; likely EB eclipse

246317123 - period 1.53 ; likely EB eclipse

246310506 - period 0.511; likely EB eclipse

246310679 - period 8.143

246302531 - single dip at 2914.99; likely EB eclipse

246277489 - maybe dip at 2909.39

246273831 - single dip at 2911.50; likely EB eclipse

246267436 - period 1.130 likely EB eclipse

246264106 - period 0.760 likely EB eclipse

246263295 - single incomplete dip at 2905.91

246261934 - single dot "transit"; likely nothing but mention it anyway; period 3.92

246251563 - single dip at 2909.37; it is EB ; primary at 2917.30

246205281 - period 3.157

246203511 - transits with irregular depth, period ~0.277

246153693

246142162 - period 2.468; visible secondary at 2907.71? EB?

246135405 - single dip at 2908.23; i don't trust it

246132671

246132219 - period 3.484; looks good but in glitch area

246127372 - period 1.798; likely EB

246103525 - maybe dips with period ~1.27

246069793 - single dip at 2911.93; I don't trust it

246068329 - dips at 2907.29; 2911.7; 2912.49; in glitch are I don't trust it

246067459 - 4 transits; period 3.198; good PC candidate

246057988 - or EB other transits are incomplete; period 2.69; additional dip at 2908.9 ?

246048959

246037366 - dip at 2910.39; I don't trust it

246036651 - dip at 2906.54; It is EB ; primary at 2913.90

246035291 - dip at 2911.73

246031933 - single dip at 2911.59

246025782 - dip at 2907.6 ; I don't trust it

246024293 - dip at 2907.94

246023698 - single dip at 2914.8

246021310 - single dip at 2907.37 ; see? something contaminates them

246020606 - single dip at 2907.34 ; I don't trust this one

246019683 - 2 dips 2907.0; 2907.59; I don't trust them

246018919 - maybe MPC ; p1 = 2.708 ; p2 = ? see 2909.00 and 2912.50

245999472 - single dip at 2910.62; hint of dip at 2912.49 ; EB?

245998035 - single dip at 2911.11

245964126 - dip at 2908.5

245966594 - it is EB period 5.55

245953291 - single dip at 2905.63

245949413 it is Detcahed EB; period ?

245942107 - single dip at 2906.54; likely EB eclipse; period ~33d

245930946 - D - period 1.584 - shallow depth; likely EB

245912429 - single dip at 2908.89

245924775 - single dip at 2911.71

245917677 - period 2.724; start from 2906.49

EB

Contact -- Detached -- semi-detached

246396443 - C - period 0.224

246394998 - D - 1 eclipses ( 2913.97 ) - period unknown

246394776 - C - period 0.310

246391384 - maybe C

246379528 - C - period 0.388

246377449 - C - period 0.326

246362671 - C - period 0.306

246359551 - D - 2 eclipses ( 2905.6 amd 2914.33 ) - period unknown

246356898 - maybe C - period 0.226

246354303 - maybe C - period 0.486

246348104 - maybe C - period 0.388

246346985 - D - period maybe 5.88; same as 246346930; maybe contaminator

246346930 - D - period maybe 5.88

246339840 - D - period ?; single dip at 2909.87 maybe real?

246335716 - C - period 0.306

246331870 - maybe C - period 0.226

246331633 - maybe C - period 0.552

246328838 - maybe C - period 0.552

246323447 - C - period 0.5

246321369 - C - period 0.653

246318423 - C - period 0.306

246318019 - C - period 0.347

246317113 - D - period 2.6

246304831 - D - period 2.752

246299560 - C - period 0.410

246296516 - maybe C EB

246296216 - maybe C EB

246294080 - C - period 0.286

246291765 - SD - period maybe 0.512

246289524 - maybe C EB

246280507 - maybe C EB - period 0.332

246275010 - C - period 0.470

246270357 - SD - period maybe 0.940

246269355 - SD - period maybe 0.796

246261328 - D - period maybe 0.858

246257206 - C - period 0.224; contact binary irregular depth

246256010 - D - period maybe 0.916

246253224 - C - period 0.326

246247609 - D - period 1.753;

246245244 - C - period 0.308

246244038 - C - period 0.286

246234081 - Maybe C EB; period 0.187

246233803 - SD - period 0.490

246233135 - 1 eclipses visible 2906.79 - period ?

246231977 - D - period 1

246229765 - SD - period 0.633

246227252 - C - period 0.265

246219451 - D - period 0.712

246195250 - maybe C EB

246194159 - single dip at 2914.38 - period ? ( in glitch area, but transit is deep so maybe real )

246190522 - C - period 0.327

246183140 - C - period 0.408

246183100 - single dip at 2914.38 - period ? (apparently it is a contamination )

246182433 - C - period 0.388

246180053 - C - period 0.864

246178617 - C - period 0.316

246171456 - maybe C EB; period 0.864

246167026 - C - period 0.380

246166661 - C - period 0.340

246156426 - С - period 0.204

246154132 - С - period 0.245

246153513 - 2 eclipses visible - period ?

246150247 - Maybe C EB

246144296 - D - period 2.115; maybe PC instead

246141050 - D - period 1.676 maybe EB with double the period

246132413 - D - period 2.84

246119020 - С - period 0.4

246115758 -SD - period 0.581

246115703 - D - period 2.85

246112974 - D - period 1

246110802 - D - period 2.85

246110750 - D - period 6.018

246103409 - С - period 0.286

246103409 - С - period 0.531

246100734 - D - 2eclipses visible - period ?

246098758 - D - 2eclipses visible - period ?

246090124 - maybe EB with 0.628 d period

246086182 - D - period 0.534

246081761 - C - period 0.265

246076742 - C - period 0.628

246072383 - C - period 0.347

246071718 - C - period 0.408

246069739 - D - period 2.380

246063596 - C - period 0.535

246063022 - Maybe C EB

246061664 - Maybe C EB

246059417 - C - period 0.850

246057376 - C - period 0.490

246056941 - Maybe C EB

246055721 - Maybe C EB

246051882 - D - period 3.811

246049211 - C - period 0.245

246044855 - C - period 0.490

246038346 - SD - period 0.964

246035190 - C - period 0.266

246032166 - D - period 4.84

246026049 - D - maybe EB eclipse at 2908.93; i don't trust it

246024982 - D - period 3.627

246024234 - D - 2 eclipses - period ?

246023959 - C - maybe contamination; period 0.624

246021727 - C - period 0.510

246021197 - C - period 0.245

246018610 - - maybe C EB

246017002 - C - period 0.326

246013395 - C - period 0.388

246013024 - C - period 0.613

246011239 - maybe C EB

246003821 - D - period 5.8

245999181 - D - 2 eclipses - period unknown

245998731 - C - period 0.388

245998257 - C - period 0.388

245995881 - SD - period 0.889

245993419 - C - period 0.326

245991994 - C - period 0.674

245986045 - D - single eclipse at 2909.325; period unknown

245980672 - D - period 0.885

245969915 - D - period 0.887

245969161 - C - period 0.224

245967743 - D - period 0.887 ; shallow depth

245963744 - D - period 1

245958274 - C - period 0.326

245958274 - C - period 0.286

245957893 - period 0.951

245954352 - SD - period 0.984

245942495 - D - 2 eclipses - period unknown

245937246 - C - period 0.244

245986045 - likely not eb

245935932 - C - period 0.479

245933690 - D - period

245932119 - D - period 1.589

245931388 - D - period 2.828; shallow depth

245927279 - C - period 0.442 ( contaminate 245926081 ? )

245926081 - C - period 0.442

245923478 - C - period 0.448

245921244 - C - period ~0.308

245912234 - D - period 1.640 ( contaminate 245912213)

245912213 - D - period 1.640 ( contamination from 245912234)

206396695

206395241 - likely contact EB

Other

246397696 - Is that a DN outburst at 2912.51 ??

246379581 - possible SSO at 2910.10

246378494 - regular variable

246369613 - maybe dip at 2906.78

246366901 - maybe dips at 2905.94 and 2912.51

246366759 - dip at 2905.55

246363270 - maybe dips at 2906.64 and 2910.28

246359278 - maybe dip at 2905.6

246355319 - maybe dip at 2905.96

246351120 - maybe dip at 2910.18

246349386 - maybe dip at 2909.81

246334090 - maybe dip at 2908.90

246328599 - regular variable

246327225 - maybe dip at 2914.29

246326327 - maybe dip at 2912.23

246325694 - maybe dip at 2912.52

246315515 - dip at 2909.38

246315313 - maybe dip at 2912.5

246307815 - maybe dip at 2908.19

246305581 - maybe dips with 2.486 period

246300909 - regular variable

246297630 - what happened here at 2911.92? looks like SSO but rise is loong

246286002 - maybe dips at 2906.49 and 2910.17

246284765 - maybe dip at 2909.39

246282238 - maybe dips at 2907.60 and 2909.39

246279103 - maybe dip at 2911.72

246271889 - regular variable

246255479 - maybe single dip at 2908.89

246248619 - maybe dip at 2908.81

246240303 - maybe dip at 2907.40

246221510 - maybe dips with period 2.717, start at 2908.32

246214885 - maybe dip at 2912.5 ( again maybe glitch )

246213900 - maybe dip at 2909.68

246202149 - maybe dip at 2912.51

246186115 - maybe dip at 2914.37

246170608 - period 2912.67

246164933 - maybe dips at 2906.59 and 2910.5

246159176 - maybe dip at 2906.59

246157466 - maybe dip at 2912.52

246112447 - check later

246078484 - irregular deep dips

246064994 - Contamination ?

246058914 ???

246503600 - same as 246467535

245971543 - maybe dip at 2907.83

246467535 - huge irregular dips , likely processing artifact

246031512 - dip at 2910.03

246025901 - irregular dips , likely processing artifact

246004693 - irregular dips , likely processing artifact

246021427- maybe dips at 2907.30; 2908.937; 2911.86

246021166 - maybe dip at 2911.02

245987749 - maybe dip at 2907.61

245951494 - maybe dip at 2910.54

245941750 - maybe dip at 2911.767

206407149 - maybe dips at 2905.97 and 2911.68

206397829 - maybe dip at 2911.69

RR Lyr

246398262

246396790

246396334

246385425 - RR or Cepheid?

246383793

246363180

246362540

246342922

246342837

246342589

246337452

246333644

246318453

246311689

246302440

246272964

246272788

246256076

246255932

246249944

246249667

246222564

246214672

246213473

246212379

246204836

246184470

246184278 - and maybe dip at 2906.720

246182115

246138791

246128960

246122912

246115789

246111572

246084693

246078531

246075393

246068203

246060557

246050597

246046601

246045130

246031813

246024360

246015642

246014035

246006501

246004916

246004530

245993724

245993700

245992976

245988750 - maybe R

245986522

245984456

245984157

245983480

245979174

245970988

245965362

245964413

245963638

245962939

245960344

245950399

245945883

245930016

245915449

206432153

Glitch

I give up, there is just too many of them

246348152 - HB pulse at 2907.394; maybe contaminaton, but where is a contaminator

246334985

246191224 - example of 2914.36 contamination

246148433

246143305

246132671

246055117 - example of 2911.72

246054495 - example of 2908.87

246044712

246044064

246044060

246044040 - example 2909 glitch

246043968

246043269

246043149

246042848

246042347

246041839

246041043 - glitch likely

246040860

246040204

246040160

246039587

246039518

246039369

246038638

246037856

246037416

246037246

246037082 - example of 2908 glitch

246036997 - example of 2909 glitch

246036097

246036048

246031650

246030211

246030175

246036034

246028836 maybe 2 dips ; at 2907.29 and 2911.90

246034105

246034153

246034424

246034432

246034495

246031125

246028803

246032354

246032497

246033983

246028373

246028258

246132671

246027118 - dip at 2907.7 maybe glitch

245968514

246027754

246027517

246027118

246027069

246025554

246026473

246026980 - maybe EB eclipse at 2908.93; i don't trust it

246026286

246026286

246021727

245968875

245967320

245954271 - maybe 2 dips ; at 2907.29 and 2911.90

Posted March 16, 2017 8:12 AM
by zoo3hans in response to Dolorous_Edd's comment.

Ok, let start then from the last one and work towards the beginning:

PC candidates

245923887 P=21.35 days, starting at BKJD 2919.37, duration 7.35 days, depth 0.0048 (5.3 R_Earth)

245950175 MPC, famous EE 4-planet system, P1=8.2630 days, etc. , see https://talk.planethunters.org/#/boards/BPH0000008/discussions/DPH0001if4, well, with the corrected LC of Andrew Vanderburg, I think I get spot up to seven planets around EPIC 245950175:

P001 PlanetaryTransit 1 245950175 2907.565658 2907.708694 8.263000000000 1409

P003 PlanetaryTransit3 1 245950175 2907.252222 2907.435258 3.559600000000 374

P002 PlanetaryTransit2 1 245950175 2905.591235 2905.795571 12.756000000000 1859

P005 PlanetaryTransit5 1 245950175 2912.109932 2912.353400 19.500000000000 485

P004 PlanetaryTransit4 1 245950175 2910.116629 2910.281807 5.404500000000 630

P006 PlanetaryTransit6 1 245950175 2907.317427 2907.418385 2.353200000000 369

P007 PlanetaryTransit7 1 245950175 2910.076293 2910.239749 27.031263000000 792

245978894 P=43.27 days, starting at BKJD 2936.71, duration 7.8 hours, depth 0.0047 (6.08 R_Earth), only 2 transits , a bit doubtful case I think

245995977 P=3.3125 days, starting at BKJD 2906.89, duration 4 hours, depth 0.003 (4.8 R_Earth)

246011078 P=5.915 days, starting at BKJD 2910.26, duration 2.5 hours, depth 0.0229 (12 R_Earth), mentioned by Ivan as an EB (which is also possible of course)

246018746 P=38.16 days, starting at BKJD 2934.37, duration 4.9 hours, depth 0.0105 (3.68 R_Earth)

246027668 maybe single transit at BKJD 2937.6, duration 22 hours, depth 0.0023 (6.8 R_Earth)

246063952 P=8.114 days, starting at BKJD 2908.215, duration 4.4 hours, depth 0.0008 (2.87 R_Earth)

246067459 P=3.2047 days, starting at BKJD 2907.50, duration 5 hours, depth 0.0086 (8.87 R_Earth), mentioned by Ivan, now confirmed in https://arxiv.org/abs/1801.07959

246069793 P=7.272 days, starting at BKJD 2911.92, duration 3.5 hours, depth 0.0623 (9.2 R_Earth), mentioned by Ivan who does not trust it

246074965 P=6.928 days, starting at BKJD 2910.81, duration 2 hours, depth 0.0058 (2.3 R_Earth), mentioned by Ivan, maybe TTV's present

246088339 P=2.9886 days, starting at BKJD 2907.59, duration 3 hours, depth 0.0012 (4.5 R_Earth), mentioned by Ivan, it seems to have significant TTV's, it might have several other objects, say P2=15.0175, starting at 2908.56, P3=17.3057 days, starting at 2919.11, object4 at BKJD 2949.93, etc.

246191232 single transit at BKJD 2927.53584, duration 51.48813, depth 0.001 (7.18 R_Earth)

246193072 P=12.455 days, strarting at BKJD 2915.24, duration 4 hours, depth 0.011 (10.08 R_Earth), mentioned by Ivan

246260670 P=3.853 days, starting at BKJD 2907.80, duration 3.5 hours ,depth 0.0061 (5.3 R_Earth)

246261316 P=4.6958 days, starting at BKJD 2908.73, duration 4.9 hours , depth 0.0015 (3.35 R_Earth)

246276996 Probably MPC, P1=6.47 days, starting at BKJD 2905.57, duration 5.4 hours, depth 0.0020, P2=16.143days, starting at BKJD 2919.92, duration 6 hours, depth 0.0015, maybe a third object at BKJD 2948.05, duration 10.3 hours, depth 0.0016

246325464 P=3.3794 days, starting at BKJD 2907.585, duration 4 hours, depth 0.0045 (4.8 R_Earth)

246326057 P=13.457 days, starting at BKJD 2915.785, duration 5.8 hours, depth 0.0168 (13.7 R_Earth)

246385525 maybe single dip at BKJD 2968.66, duration 2.5 hours, depth 0.0044

246393730 P=23.99 days, starting at BKJD 2915.92, duration 7.35 hours, depth 0.0286 (16.6 R_Earth)

245943455 P=6.337 days, starting at BKJD 2908.785, duration 4 hours, depth 0.0003 (about 1.7 R_Earth), from Exoplanet Explorers

246405278 P=4.463 days, starting at BKJD 2908.11, duration 4.4 hours, depth 0.0023, mentioned by Ivan

246405762 P=29.8725 days, starting at BKJD 2914.265, duration 4.0 hours, depth 0.0368

246441449 P=4.532 days, starting at BKJD 2908.01, duration about 4.4 hours, depth 0.0123

246453091 P=10.735 days, starting at BKJD 2912.185, duration 3.5 hours, depth 0.063 (maybe too large for a planet)

246485787 P=4.5478 days, starting at BKJD 2909.637, duration 2.5 hours, depth 0.0028

EB candidates

245941309 P=25.12 days, mentioned by JKD

245942495 P=6.483 days, mentioned by Ivan but without period

245949413 P=13.158 days, mentioned by Ivan but without period

245969605 P=23.108 days, mentioned by Ivan and JKD

245986045 P=8.38 days, mentioned by Ivan with some doubts and no period

245996104 P=0.8896 days

245996208 P=40.07 days

245998035 P=31.6 days, mentioned by Ivan as a single dip PC

245999472 P=10.595 days, mentioned by Ivan as a PC or EB but without period

246018919 P=2.723 days, mentioned by Ivan as a MPC

246023698 P=11.56 days, mentioned by Ivan as a single dip PC without period

246024234 P=6.063 days, mentioned by Ivan but without period

246031933 P=25.74 days, mentioned by Ivan as a PC with a single dip, radius estimate about 25 R_Earth

246036651 P=14.25 days, mentioned by Ivan but without period

246057988 P=5.37 days, mentioned by Ivan as a PC

246090964 P=20.227 days

EPIC 246098758 P=7.39 days, mentioned by Ivan, but without period

246100734 P=6.69 days, mentioned by Ivan, but without period

246109068 P=6.69 days

246116181 P=18.8575 days

246127372 P=3.58 days, mentioned by Ivan as a possible PC

246132219 P=3.483 days, mentioned by Ivan as a PC, but size is about 24.9 R_Earth, in addition we see secondry eclipses (for example at BKJD 2912.0)

246142162 P=2.48 days, mentioned by Ivan as a PC, but the depth corresponds to 20 R_Earth radius, so it must be an EB

246153513 P=10.7475 days, mentioned by Ivan with an unknown period

246163364 very nice eclipse at 2972.7, duration about 32 hours, depth 0.066, mentioned by Ivan

246194159 primary at BKJD 2914.387, duration 8.8 hours, depth 0.379, secondary at BKJD 2977.909, duration
15.69 hours, depth 0.307, so expected period around 127 days. Mentioned by Ivan with a single eclipse.

246216349 P=21.46 days, starting at BKJD 2923.35, duration 5.9 hours, depth 0.0403 (7.22 R_Earth), secondaries visible

246231977 P=1.028 , mentioned by Ivan with P=1.0d

246247609 P=1.764 days, mentioned by Ivan with a slightly wrong period

246251563 P=15.3748 , mentioned by Ivan as a PC

246258298 P=5.394 days

246261328 P=0.8437 days, mentioned by Ivan

246263295 P=13.093 days, mentioned by Ivan as a single PC event

246264106 P=0.7584 days, mentioned by Ivan

246267436 P=1.1285 days, mentioned by Ivan as a PC

246270357 P=0.9288 days, mentioned by Ivan

246273010 P=0.5304 days

246273831 P=21.595 days, starting at BKJD 2911.54, duration 6 hours, depth 0.0376, mentioned by Ivan with a single dip

246280933 P=0.2664 days

246291148 P=62.49 days

246304831 P=2.743 days, mentioned by Ivan with a slightly incorrect period

246307262 P=0.55125 days

246307815 P=7.723 days, mentioned as "Others" by Ivan

246310297 P=20.738 days

246310679 P=8.136 days, mentioned by Ivan as a PC, but there are small secondary eclipses in between.

246317113 P=2.593 days, mentioned by Ivan.

246363328 maybe single eclipse at BKJD 2938.25 , duration 83.4 hours, depth 0.067

246363753 P=12.065 days

246365896 P=0.5296 days

246367558 P=18.36 days

246392266 P=0.576 days

246402573 P=2.32883 days

246405050 P=4.209 days

246408673 P=0.4125 days

246412710 P=0.33167 days

246412864 P=0.33246 days

246416406 P=16.13375 days

246421164 P=0.73 days

246425172 primary eclipse at BKJD 2939.20, duration 69.14 hours, depth 0.0696, secondary eclipse at BKJD 2970.34, duration 68.15 hours, depth 0.039 , very nice light curve

246431497 P=6.8936 days, starting at BKJD 2909.08, duration 3.4 hours, depth 0.169

246433273 P=0.2975 days (or else PC)

246433616 P= 9.688 days

246434128 P=2.4 days

246446309 P=0.23643 days

246449231 P=0.40665 days

246455154 P=0.2559 days

246455344 P=0.2869 days

246456572 P=0.7675 days

246462274 secondary eclipse at BKJD 2929.579, duration 7.8 hours, depth 0.049 (gives a radius of 13.8 R_Earth), primary eclipse at BKJD 2972.78, duration 7.8 hours, depth 0.23 (29.9 R_Earth)

246467137 period probably about 7 days, but so far we have only one secondary and one primary eclipse

246467965 P=1.05383 days

246475451 P=39.72 days

246477490 P=0.32597 days

246478240 P=1.71167 days

246480627 P=12.759 days

246507864 P=0.2513 days

246519281 P=0.71267 days

251456366 P=3.65 days

251456464 P=6.395 days (or half this value)

251456488 P=7.746 days (or half this value), depth 0.7 (!)

251456829 P=0.6183 days

251456836 P=0.3704 days

206380015 P=2.853 days

RR_Lyrae

246280947

246283185

246340736

246360595

246427301 maybe

246434558 maybe

246453655

246456810

246459054

246476873

251456074

251456127

251456807

251456810

251456813

251456814

251456816

251456818

251456822

251456823

251456825

251456830

Other

246285665 peak at BKJD 2938.19, duration 23.5 hours

246400649 peak at BKJD 2910.531, duration 3.4 hours, maybe moon at 2910.276

246403813 peak at BKJD 2914.526, duration 4.9 hours

246407569 peak at BKJD 2910.766, duration 3.9 hours

246409438 peak at BKJD 2908.508, duration 3.5 hours

246409449 peak at BKJD 2909.448, duration 3.5 hours

246409736 peak at 2907.579, duration 5.9 hours

246410966 peak at BKJD 2908.22, duration 3.4 hours

246412879 peak at BKJD 2907.068, duration 3 hours, small peak later on at BKJD 2907.272, duration 1 hour

246426878 peak at BKJD 2906.618, duration 4.9 hours

246428321 peak at BKJD 2912.013, duration 4.9 hours

246429476 peak at BKJD 2909.203, duration 5.4 hours

246429516 peak at BKJD 2906.823, duration 3.9 hours

246431569 peak at BKJD 2911.92, duration 4.4. hours

246432390 peak at BKJD 2907.088, duration 6.9 hours

246434300 peak at BKJD 2908.611, duration 3.4 hours

246434800 peak at BKJD 2905.689, duration 5.4 hours

246434849 peak at BKJD 2910.164, duration 4.4 hours

246435883 peak at BKJD 2909.704, duration 3.9 hours

246436641 peak at BKJD 2909.510, duration 5.4 hours

246438320 peak at BKJD 2908.570, duration 4.4 hours

246438635 peak at BKJD 2906.353, duration 3.9 hours

246438644 peak at BKJD 2912.462, duration 4.9 hours

246438653 peak at BKJD 2907.374, duration 5.9 hours

246440947 peak at BKJD 2907.088, duration 4.9 hours

246441591 peak at BKJD 2906.802, duration 3.9 hours

246444771 peak at BKJD 2907.109, duration 4.9 hours

246446456 peak at BKJD 2909.908, duration 4.9 hours

246450421 peak at BKJD 2907.415, duration 5.9 hours

246453469 peak at BKJD 2909.203, duration 9.3 hours

246455549 peak at BKJD 2908.049, duration 4.9 hours

246468392 peak at BKJD 2908.60, duration 4.9 hours

245468852 peak at BKJD 2906.598, duration 4 hours

246470378 peak at BKJD 2908.437, duration about 5.9 hours

246498851 peak at BKJD 2906.7716, duration 4.4 hours

246500427 peak at BKJD 2907.088, duration 4 hours, maybe solar system object

251456099 maybe cataclysmic variable, large outbreaks with 500-650% luminosity

glitches

BKJD 2921.26, for example EPIC 246346586 , 246352788

Posted March 16, 2017 7:21 PM
by Shellface

EPIC 246018746 was our short cadence target; are transits present in the C12 data?

Posted March 17, 2017 12:07 AM
by Dolorous_Edd in response to Shellface's comment.

Impossible to tell at this point, we have to wait for corrected data

Posted March 17, 2017 6:06 AM
by zoo3hans in response to Shellface's comment.

Well, I cannot see anything too. But so far we have only 7 days available in preview1, so maybe later on we can see something nevertheless...

Posted March 17, 2017 2:22 PM
by zoo3hans in response to zoo3hans's comment.

Well, Mark told me that we have already a special run of EPIC 246018746. Tentatively it could have a period of 19.9 days. Although it's just a quess at this point.

Posted March 17, 2017 6:51 PM
by Dolorous_Edd in response to zoo3hans's comment.

Disagree, these are glitches ( they are present in the several LC's from that batch )

Insufficient correction to say anything about the presence of the transits for now

but I quote myself

possible transit with 11.157d period; start from 2959.09

I don't believe in these either

Lets wait for data from MAST or Andrew's

Posted March 17, 2017 6:57 PM
by zoo3hans in response to Dolorous_Edd's comment.

Ok then.

Posted March 17, 2017 8:18 PM
by ajamyajax

Re 60017822/60023349/246183140 from Robert's list and an Engineering/c12 crossover candidate: this target looks like a short period binary that is more visible with the additional data in c12. Already listed on VSX as EB NSVS 14591443 with a period of 0.403318 though.

From NEA, K2 Targets within search area:

EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number

60017822 352.8183 -5.3717 0.0 11.300 E

246183140 352.8183 -5.3717 0.21 11.270 12

60023349 352.8183 -5.3717 0.21 11.255 E

246183064 352.8356 -5.3734 62.25 15.165 12

246183562 352.8337 -5.3626 64.03 13.695 12

246182844 352.8005 -5.3778 67.73 14.596 12

246182460 352.7978 -5.3861 89.99 17.894 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

60017822,2MASS J23311639-0522177,352.818348,-5.371712,,,,11.300,,,

Aliases

EPIC 246183140

WISE J233116.41-052218.1

From VSX:

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

0.10 Variable NSVS 14591443 000-BJG-897 23 31 16.80 -05 22 16.7 Aqr EB|EW 0.403318 11.687 - 12.042 R1

Also listed as TYC 5257-616-1 -- Eclipsing Binary Candidate on Simbad, Proper motions mas/yr: 15.634 -30.327, 23 31 16.4037 -05 22 17.835

Posted July 10, 2017 8:25 PM
by ajamyajax

Re 60023448/246300901 as an Engineering/c12 crossover candidate: noticed about a seven day period that seems to repeat from the Engineering times (although some are more blended-in than those shown). But since there are other possible events near the same period, it seems these could all be related to stellar activity.

Engineering:

s1=1868.255 p1=6.9995 d1=0.12 (2.88 hours +/-)

s3=1865.56 p3=6.321 d3=0.14 (3.36 hours +/-)

c12:

s2=2908.97 p2=6.64 d2=0.12 (2.88 hours +/-)

s3=2921.17 p3=6.321 d3=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)

246300901 , 2MASS J23341265-0302521 , 10.602 , 10.156 , 10.044 , 0.446 , 0.112 , ('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

60023448 353.5527 -3.0477 0.0 11.612 E

246300901 353.5527 -3.0477 0.02 11.904 12

246301471 353.5512 -3.0364 41.31 15.348 12

60020334 353.5293 -3.0492 84.25 14.900 E

246300833 353.5293 -3.0492 84.34 14.730 12

246299514 353.5626 -3.0756 106.3 14.027 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

60023448,2MASS J23341265-0302521,353.552710,-3.047722,,,,11.612,,,

246300901,2MASS J23341265-0302521,353.552710,-3.047722,4855.00,3.25,1.24,11.904,-18.900,-8.800,445.70

Aliases

EPIC 246300901

WISE J233412.64-030252.4

Listed as TYC 5254-594-1 -- Star on Simbad, Proper motions mas/yr: -16.993 -14.805, 23 34 12.6624 -03 02 52.190

Posted July 12, 2017 6:40 PM
by ajamyajax

Re 60024244/246233135 from Robert's list and an Engineering/c12 crossover candidate: finally a period for this binary with two primary transit repeats that are visible in the c12 raw cadence(!)

Engineering:

s1=1866.987 p1=43.3258 d1=0.27 (6.48 hours +/-)

c12:

s1=2906.807 p1=43.3258 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)

246233135 , 2MASS J23553767-0422098 , 10.589 , 10.240 , 10.173 , 0.349 , 0.067 , ('G8V', 0.94) , ('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

60024244 358.907 -4.3694 0.0 12.223 E

246233135 358.907 -4.3694 0.01 12.208 12

246232806 358.9196 -4.3756 50.49 17.013 12

246234466 358.9079 -4.3429 95.36 13.254 12

246231829 358.8778 -4.3931 134.93 15.066 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

60024244,2MASS J23553767-0422098,358.906979,-4.369421,,,,12.223,,,

246233135,2MASS J23553767-0422098,358.906979,-4.369421,5838.00,1.04,0.99,12.208,24.200,-17.700,268.80

Aliases

EPIC 246233135

WISE J235537.69-042210.1

Programs GO12019_LC, GO12122_LC, GO12071_LC

Listed as TYC 5256-1076-1 -- Eclipsing Binary Candidate on Simbad, Proper motions mas/yr: 21.635 -14.984, 23 55 37.6808 -04 22 09.919

Posted July 14, 2017 1:21 PM
by Artman40

https://keplerscience.arc.nasa.gov/k2-campaign-12-processed-data-available.html

"K2 Campaign 12 processed data available."

Posted August 1, 2017 12:55 AM
by JKD

245929407, PC with S at 2927.12 BKJD, P = ?, Duration ~5.4 hrs, Flux ~2.1 %

245941309, EB (?) with S at 2913.28 BKJD, P = 25.12, Duration ~3.9 hrs, Flux ~16 %

245946030, S at 2913.9 BKJD, P = 26.54 d, Duration ~3.92 hrs, Flux ~2.3 %

245946054 maybe a PC; S at 2938.82 BKJD, P = ?, Duration ~8.8 hrs, Flux ~0.4%

245948843, eccentric EB, S at 2920.77 BKJD, P = 30.82 d, Duration ~4.9 hrs, Flux ~24.3 %

245964933 likely an EB, S at 2925.27 BKJD, P = ?, Duration ~10.78 hrs, Flux ~4%

245969605, EB with a pot 3rd body; S at 2920.00 BKJD, P = 19.37 d, (already mentioned by DE, see below comment)

245970290 PC with S at 3936.76. BKJD, P = ?, Duration ~8.82 hrs, Flux ~0.7%

Posted August 1, 2017 8:52 PM
by Dolorous_Edd

From Andrew's data - in Bold

**

SSO

**

246069620 - at 2920.85 ; ~14h

245974080 - maybe SSO at 2926.00 , ~25.00

246012244 - at 2937.48; 17h

246013582 - at 2937.65; 18h

246014935 - at 2960.39

246084817 - at 2938.0 ; 14h

246090436 at 2925.55; 11h

246104750 - 2921.29; ~24h Comet PANSTARRS

246124699 - 2952.42 ; 11h

246129569 - 2917.92; 7.8h

246143593 - 2909.68; 18.63

246183675 - 2963.46; 8.82

SSO at 2942.67? 25.9

246226873 - at 2928.28; duration 10.78

246233132 - at 2945.68 ; duration 16.67

246245634 - at 2932.97; duration 7

246261090 - at 2940.09; duraton 19.6h

2938.028048 - at 2938.02; duration 17.8

PC

246405278 - period ~4.462d; depth 0.002 ; duration 4.41h

246318828 - eclipse at 2915.00

246310303 - period 16.796; depth 0.0012; duration 3.92

246307510 - looks like EB? or maybe PC - period ????

246302675 - maybe dips at 2913.06 and 2937.5 and 2978.03

246297717 - single dip at 2927.32 ; duration 6.86

246270904 - period 3.986; depth 0.003; duraton 3.432

246244037 - period 14.665 start at 2914.91; depth 0.0006; duration 3.43

246239135 - possible MPC ; period 1 = 8.171 start at 2912.93; period 2 = 12.760 start at 2913.34; period 3 = 19.344 start at 2914.03

246220667 - period 6.668; duration 2.94; depth 0.0001

246220254 - period 21.433; duration 3.92

246214735 - period 36.542; depth 0.0005; duration 7.35; what is up with transit at 2908.67? also dip at 2930.71? and near?

246193072 - period ~12d; depth ~1% ; duration 3.92h

246190210 - single dip at 2942.77; depth 0.0003; duration 28h

246178445 - period 6.394; depth 0.0006; duration 3.43

246120353 - period 42.856; depth 0.003; duration 3.92

246116001 - single dip at 2978.80; duration 10h

246100474 - period 3.943; duration 3.922 : v-shaped

246088339 - period 2.989 ; depth ~0.0012; duration 2.94

246074965 - period 6.928 ; depth ~0.06; duration 1.96

246071434 - maybe EB or PC

246037082 - maybe single dip ; less than ~1%

246032466 - single 2% dip

246028803 - single dip at 2941.20; 53.44h , mind you

246009033 - period 53.256; depth ~1.2 ; duration 6.86h

246004726 - period 13.096; mentioned by Hans here: https://talk.planethunters.org/#/boards/BPH0000008/discussions/DPH0001if4

246003817 - maybe dip at 2924.59

245991048 - Possible MPC; Period 1 = 8.584 start at 2909.77 ; period 2 = 20.585; start at 2914.07; looks contaminated to be honest

245958375 - maybe dip at 2919.61

245957384 - maybe single dip at 2948.07

245955351 - possible MPC? mentioned by Hans here: https://talk.planethunters.org/#/boards/BPH0000008/discussions/DPH0001if4

P1 = 18.426; start at 2913.03, P2 = 7.982 = start 2918.10

245945819 - maybe single dip at 2973.93

245941470 - maybe single dip at 2973.61

245928245 - maybe dip at 2930.733

245941234 - maybe single 2924.57

EB's

246340400 - long eclipse at 2941.83

246335875 - long eclipse at 2942.61

246318356 - eclipse at 2926.06

246306905 - single eclipse 2937.16

246309088 - eclipse at 2938.85

246301447 - single dip at 2934.21

246301164 - eccentric binary ; eclipses at 2925.77 and 2934.27

246298699 - dip at 2934.21

246279882 - eclipses at 2910.72 and 2939.45

246258298 - from Hans list; period = 5.380; non EB related dips at 2908.85 and 2944.14 and 2945.18

246226911 - SD - period 0.6

246221408 - D - period 18.659

246205281 - D - period 6.31

246185964 - single dip at 2948.03

246163364 - eclipses at 2963.74 and 2972.73

246149537

246136316

246135756 - maybe single dip at 2945.54

246120070 - period 40.567

246144122 - D - period 5.752

246128198 - D - period 4.88

246104794

246095055 - HB - period 58.7

246089124 - single eclipse at 2941.46 also at 2977.97

246057376

246072383

246071718

246064096

246061984

246056941

246055294

246054790

246053316

246037511

246037366 - D - period unknown; eclipses 2910.41 and 2946.88

246032354

246021754

246021727

246021205

246021197

246020040

246019096 - single dip at 2932.54

246017002 - period 0.32

246011239 - period 0.574

246011078 - period 5.914

246009385 - C - period ~0.4d

246002682 - period 0.122

245985118 - HB - period 13.5

245982678 - D - period 26.526; dip at 2934.61 ; secondary ?

245976296 - maybe single dip at 2908.63

245969605 - period 23d, possible third body transit at 2939.91

245948952 - maybe EB or contamination from it ; dips at 2908.90 and 2924.84

245948843 - D - period ~30.8d

245946030 - D - period ~26.5

245925480 - D - period ~6.2d

245937077 - single dip at 2919.58

245924237 - maybe single dip at 2930.74 ; depth ~2%

Other

246201911 - why such drastic rise in flux at the of the LC?

246199087 - random dips

246193389 - dips at 2944.01 and 2966.55

246167314 - random dips ?

246150661 - single dip at 2948.038288

246144730 - maybe dip at 2943.56

246135469 - maybe dip at 2923.05

245986837 - Mira?

246192083 - multipe spikes, like SSO cross , what are they? they don't look like flares

246058914 - what type of variable it is?? GDOR?? RR Lyr?

246060078 - what is wrong with area at 2916?

246382248 - periodic variable ; period ~10.5d

246367667 - long dip at 2955.77??

246231556 - again DN signature at 2948.74 why it is transient?

246219097 - huh? why such big jump in flux???

246217282 DN outburst at 2950.82?

246213003 - DN outburst at 2950.82?

246128273 - outburst at 2940.89

246069620 - SSO cross at 2917.24; duration ~ 41.1h ; likely 1997 XX3; is that normal for it to be so rather slow?

Posted August 2, 2017 10:34 AM
by ajamyajax

Re 246326057 from Hans Martin's list: has a chance as a high impact warm Jupiter at 0.97 R_Sol or even a bit larger.

s1=2915.78 p1=13.4625 d1=0.1875 (4.5 hours +/-)

Semi-Major Axis a (A.U.) = 0.113

Radius (R_Sun) = 1.06

Mass (M_Sun)= 1.057

Period ~= 13.459 days

Duration ~= 4.5016 hours

Duration in BKJD ~= 0.1876 days

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)

246326057 , 2MASS J23354260-0232371 , 12.619 , 12.303 , 12.181 , 0.316 , 0.122 , ('G5V', 0.98) , ('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

246326057 353.9275 -2.5436 0.01 13.744 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

246326057,2MASS J23354260-0232371,353.927493,-2.543618,5596.00,0.97,0.97,13.744,4.700,-7.100,578.20

Aliases

WISE J233542.60-023237.2

Program GO12122_LC: Howard The Masses and Prevalence of Small Planets with K2 - Cycle 4

Posted August 6, 2017 10:29 PM
by Dolorous_Edd

from GO12111 Molnar The grand K2 RR Lyrae survey

looks rather wierd for RR Lyr, maybe even has some dips, with ~1.34d period see 2906.42

Posted August 9, 2017 1:55 PM
by ajamyajax

Re 246260670 from Hans Martin's list: an interesting target with an apparent dwarf that is small and fairly isolated so it's difficult to make the case for binary contamination or a stellar companion this small. Yet the period and duration seem a mismatch for the star's values on record, unless its orbit is very high impact.. So I guess a transiting object of that type is the better chance here with the information we have right now.

s1=2907.80 p1=3.85359 d1=0.1175 (2.82 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)

246260670 , 2MASS J23284225-0350470 , 13.526 , 12.980 , 12.818 , 0.546 , 0.162 , ('K4V', 0.78) , ('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

246260670 352.1761 -3.8464 0.01 15.286 12

246260091 352.197 -3.8572 84.55 14.877 12

246259651 352.2037 -3.8655 120.66 11.076 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

246260670,2MASS J23284225-0350470,352.176113,-3.846374,4766.00,0.62,0.73,15.286,6.400,-6.000,429.60

Aliases

WISE J232842.26-035047.0

Program GO12123_LC: Stello Galactic Archaeology on a grand scale

Re the larger spike at 2951.35 BKJD:

EPIC_ID , time_success , ID , SSO# , Class , Mag , Link , Err , d

246260670, mid , Mars , -, Planet , -0.1 ,http://vizier.u-strasbg.fr/cgi-bin/VizieR-5?-source=B/astorb/astorb&Name===Mars, 0.010 ,460.162

Also the smaller spike at 2951.78 is near the Mars event so this could be either Phobos and Deimos (the two moons of Mars), if not a flare, asteroid, or a glitch..

Phobos orbits closer to Mars with a semi-major axis of 9,377 km (5,827 mi). Deimos orbits Mars with a semi-major axis of 23,460 km (14,580 mi) per Wiki.

Update: here is another look at the SSO from nearby EPIC 246260091 at 84.55 arcsecs away. I amplified the pixel brightness slightly more than the above animation.
And as you can see, the increase in brightness during both spikes appears about the same, so I think a flare and a single source glitch can be ruled out as the cause.

Posted August 11, 2017 5:04 PM
by ajamyajax

Re 246193072 from Ivan's and Hans Martin's lists: nice transit and nearly text book for a planet shape. So as we know from these, a very good chance for a Jupiter class planet candidate with the right-sized star. Also minimally corrected data used for this fit.

s1=2915.249 p1=12.455 d1=0.15625 (3.75 hours +/-)

Semi-Major Axis a (A.U.) = 0.106

Radius (R_Sun) = 0.9

Mass (M_Sun)= 1.034

Period ~= 12.449 days

Duration ~= 3.7514 hours

Duration in BKJD ~= 0.1563 days

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)

246193072 , 2MASS J23243247-0509507 , 11.174 , 10.798 , 10.668 , 0.376 , 0.13 , ('G9V', 0.91) , ('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

246193072 351.1353 -5.1641 0.02 12.463 12

246192575 351.1606 -5.1733 96.71 15.208 12

246191348 351.1462 -5.1987 130.5 12.361 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

246193072,2MASS J23243247-0509507,351.135320,-5.164092,5257.00,0.88,0.94,12.463,11.200,-9.700,254.40

Aliases

WISE J232432.48-050950.8

Programs GO12122_LC, GO12071_LC, GO12123_LC, GO12049_LC:

GO12122 Howard The Masses and Prevalence of Small Planets with K2 - Cycle 4

GO12071 Charbonneau Characterizing Small K2 Planets with the HARPS-N Spectrograph

GO12123 Stello Galactic Archaeology on a grand scale

GO12049 Quintana Discovery and Vetting of K2 Exoplanets

Posted August 12, 2017 2:36 PM
by ajamyajax

Re 246216349 from Hans Martin's list: appears to be an eccentric binary with the secondary more visible in minimally corrected data.

s1=2923.35 p1=21.465 d1=0.25 (6.0 hours +/-)

s2=2931.12 p2=21.465 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)

246216349 , 2MASS J23212126-0441233 , 12.455 , 11.850 , 11.609 , 0.605 , 0.241 , ('K6V', 0.7) , ('M2V',0.5)

From NEA, K2 Targets within search area:

EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number

246216349 350.3386 -4.6898 0.0 14.667 12

246215335 350.3487 -4.7108 83.71 14.736 12

246215532 350.3641 -4.7064 109.02 13.039 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

246216349,2MASS J23212126-0441233,350.338593,-4.689814,3699.00,0.33,0.37,14.667,-26.000,-42.000,103.30

Aliases

WISE J232121.23-044124.1

Posted August 13, 2017 5:10 PM
by zoo3hans in response to zoo3hans's comment.

Unfortunately the new MAST data does not support my first look. It now seems to support a 38.26 days period.

Posted August 13, 2017 8:40 PM
by ajamyajax

Re 246067459 from Ivan's and Hans Martin's lists: could work as a large gas giant planet candidate in a somewhat messy light curve with a subgiant star, and if not a binary. Be interesting to see if in an eccentric orbit also.

s1=2907.503 p1=3.2051 d1=0.15 (3.6 hours +/-)

Semi-Major Axis a (A.U.) = 0.041

Radius (R_Sun) = 1.3

Mass (M_Sun)= 0.906

Period ~= 3.209 days

Duration ~= 3.6039 hours

Duration in BKJD ~= 0.1502 days

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)

246067459 , 2MASS J23104905-0751270 , 12.464 , 12.095 , 12.032 , 0.369 , 0.063 , ('G9V', 0.91) , ('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

246067459 347.7043 -7.8575 0.02 13.552 12

246067010 347.6892 -7.867 64.06 13.322 12

246068627 347.716 -7.8307 105.08 15.410 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

246067459,2MASS J23104905-0751270,347.704341,-7.857499,5375.00,0.88,0.91,13.552,-20.300,-4.900,453.00

Aliases

WISE J231049.06-075127.2

Program GO12122 Howard The Masses and Prevalence of Small Planets with K2 - Cycle 4

Posted August 14, 2017 2:05 PM
by ajamyajax

Re 246069793 from Ivan's and Hans Martin's lists: sparse transit data, but a high impact gas giant seems possible for this small M-dwarf target (0.34 R_Sol: Huber). Minimally corrected data again for this fit.

s1=2911.943 p1=7.2695 d1=0.1133 (2.72 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)

246069793 , 2MASS J23460505-0748197 , 13.716 , 13.061 , 12.802 , 0.655 , 0.259 , ('M7V', 0.098) , ('M3V',0.4)

From NEA, K2 Targets within search area:

EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number

246069793 356.5211 -7.8055 0.04 16.382 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

246069793,2MASS J23460505-0748197,356.521068,-7.805489,3778.00,0.34,0.38,16.382,39.000,-36.000,201.30

Aliases

WISE J234605.08-074820.2

Program GO12018_LC Crossfield The K2 M Dwarf Project: Campaigns 11-13

Posted August 14, 2017 8:00 PM
by ajamyajax

Re 246074965 from Ivan's and Hans Martin's lists: faint target at 16.278 Kepmag, but a small planet candidate seems possible here if a 0.28 R_Sol star. A blend or a high-impact and barely-transiting stellar companion also possible based on the colors.

s1=2910.83 p1=6.929 d1=0.075 (1.9 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)

246074965 , 2MASS J23354006-0741116 , 13.177 , 12.595 , 12.352 , 0.582 , 0.243 , ('K5V', 0.75) , ('M2V',0.5)

From NEA, K2 Targets within search area:

EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number

246074965 353.9169 -7.6866 0.01 16.278 12

246075368 353.8901 -7.6782 100.24 11.891 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

246074965,2MASS J23354006-0741116,353.916929,-7.686560,3629.00,0.28,0.29,16.278,-5.000,-43.000,120.50

Programs GO12018_LC, GO12123_LC:

GO12018_LC Crossfield The K2 M Dwarf Project: Campaigns 11-13

GO12123_LC Stello Galactic Archaeology on a grand scale

Posted August 15, 2017 7:27 PM
by ajamyajax

Re 246063952 from Hans Martin's list: seems a bit higher chance for a blended binary so far here, but a PC was targeted by three planet-hunting proposals...

s1=2908.217 p1=8.113 d1=0.141 (3.38 hours +/-)

Semi-Major Axis a (A.U.) = 0.078

Radius (R_Sun) = 0.91

Mass (M_Sun)= 0.95

Period ~= 8.101 days

Duration ~= 3.3811 hours

Duration in BKJD ~= 0.1409 days

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)

246063952 , 2MASS J23254154-0756052 , 11.149 , 10.804 , 10.755 , 0.345 , 0.049 , ('G8V', 0.94) , ('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

246063952 351.4231 -7.9348 0.02 12.315 12

246065231 351.4227 -7.9065 101.88 12.675 12

246064599 351.3923 -7.9207 120.96 15.344 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

246063952,2MASS J23254154-0756052,351.423072,-7.934754,5483.00,0.91,0.95,12.315,26.400,8.400,263.50

Aliases

WISE J232541.55-075605.0

Programs GO12122_LC, GO12071_LC, GO12049_LC:

GO12122 Howard The Masses and Prevalence of Small Planets with K2 - Cycle 4

GO12071 Charbonneau Characterizing Small K2 Planets with the HARPS-N Spectrograph

GO12049 Quintana Discovery and Vetting of K2 Exoplanets

Posted August 15, 2017 9:06 PM
by ajamyajax

Re 245995977 from Hans Martin's list: this transit looks pretty convincing as a Neptune planet candidate.

s1=2906.899 p1=3.3131 d1=0.10 (2.4 hours +/-)

Semi-Major Axis a (A.U.) = 0.042

Radius (R_Sun) = 0.86

Mass (M_Sun)= 0.915

Period ~= 3.31 days

Duration ~= 2.401 hours

Duration in BKJD ~= 0.1 days

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)

245995977 , 2MASS J23424854-0935188 , 12.128 , 11.800 , 11.718 , 0.328 , 0.082 , ('G6V', 0.97) , ('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

245995977 355.7023 -9.5886 0.05 13.376 12

245996687 355.7187 -9.5708 86.54 15.633 12

245994782 355.7037 -9.6191 109.92 16.596 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

245995977,2MASS J23424854-0935188,355.702287,-9.588591,5760.00,0.88,0.87,13.376,28.700,-30.300,425.30

Aliases

WISE J234248.56-093519.2

Program GO12122 Howard The Masses and Prevalence of Small Planets with K2 - Cycle 4

Posted August 15, 2017 11:05 PM
by ajamyajax

Re 246297630 from Ivan's list: the 2911.x spike in the LC appears to be main belt asteroid Cernovice just tumbling along through our field of view.

EPIC_ID , time_success , ID , SSO# , Class , Mag , Link , Err , d

246297630, mid , Cernovice , 6802, MB>Outer , 16.8 ,http://vizier.u-strasbg.fr/cgi-bin/VizieR-5?-source=B/astorb/astorb&Name===Cernovice, 0.024 ,5.624

K2 ephemeris for Cernovice from JPL/Horizons...

Object 'Cernovice' is visible in C1 (mag 19.3..20.0; 0.8..29.2"/h; ra 171.081..176.884; dec 0.552..3.117).

Object 'Cernovice' is visible in C12 (mag 16.8..18.2; 2.2..55.7"/h; ra 0.687..359.469; dec -3.158..3.498).

Posted August 18, 2017 3:32 PM
by ajamyajax

Re 246058914 from Ivan's list: this target an unusual double-mode RR Lyrae according to VSX which I believe is visible here.

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)

246058914 , 2MASS J23254104-0803002 , 16.438 , 16.184 , 15.502 , 0.254 , 0.682 , ('F9V', 1.14) , ('',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

246058914 351.421 -8.0501 0.01 16.891 12

246058436 351.4139 -8.0609 46.67 14.417 12

246059728 351.4314 -8.0319 75.33 13.663 12

epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist

246058914,2MASS J23254104-0803002,351.421022,-8.050081,,,,16.891,,,

From VSX:

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

0.03 Variable CSS_J232540.9-080259 -- 23 25 40.96 -08 02 59.3 Aqr RRD 0.336102 16.98 (0.46) CV

"RRD: Double-mode RR Lyrae stars which pulsate in the fundamental mode as well as in the first overtone with a period ratio of 0.74 and a fundamental period near 0.5 days (or in the first and second overtones with a period ratio of 0.80). GCVS class RR(B)."

Posted August 18, 2017 4:08 PM
by ajamyajax

Re 251456099 from Hans Martin's list: well this could be a quasar in a distant galaxy according to the C12 program for this target. We can't see much in the pixel data of course, but incredible time and distance probably involved here.

RA/Dec 351.6068400, 1.2024180, Kepmag 20.140

Listed as PKS 2323+009 -- Radio-source on Simbad, 23 26 25.6438 +01 12 08.693

Program: GO12013 Richards Variability of Luminous Quasars as a Function of Accretion Rate

https://keplerscience.arc.nasa.gov/data/k2-programs/GO12013.txt

"A quasar consists of a supermassive black hole surrounded by an orbiting accretion disk of gas. As gas in the accretion disk falls toward the black hole, energy is released in the form of electromagnetic radiation. Quasars emit energy across the electromagnetic spectrum and can be observed at radio, infrared, visible, ultraviolet, and X-ray wavelengths. The most powerful quasars have luminosities exceeding 1041 W, thousands of times greater than the luminosity of a large galaxy such as the Milky Way."

From: https://en.wikipedia.org/wiki/Quasar

Posted August 18, 2017 6:39 PM
by Dolorous_Edd

If anyone wondered how our local solar system comet would look like

Well .....BEHOLD

EPIC 246104750 - Comet C/2012 F3

slow, sarcastic clap

Posted September 3, 2017 10:47 PM
by zoo3hans

Well, I look now to the corrected LC's of Andrew Vanderburg K2_C12_Corr, starting from the last one.

PC candidates:

245953291 possible MPC, P1=68.13 days, maybe single transit at BKJD 2973.79, dutation 6.4 hours, depth 0.014 (5.16 R_Earth), P2=25.63145 days, starting at BKJD 2925.07, duration 3.0 hours, depth 0.0118 (4.7 R_Earth)

245982678 P=26.56 days, starting at BKJD 2921.97, duration 3.5 hours, depth 0.0295 (12.1 R_Earth), additional dip at BKJD 2934.63, duration 3.4 hours, depth 0.0050 (5.0 R_Earth), mentioned by Ivan as an EB, but the "secondary" does NOT repeat

245989879 P=33.5548 days, starting at BKJD 2934.60, duration 6.8 hours, depth 0.0016 (3.0 R_Earth)

246020040 P=19.225 days, starting at BKJD 2920.68, duration 3.4 hours, depth 0.026 (11.9 R_Earth), mentioned as a EB (without period) by Ivan

246061904 maybe MPC P1=0.71347, starting at BKJD 2905.57, duration 2 hours, depth 0.0007 (2.06 R_Earth), P2=3.39635 days, starting at BKJD 2906.62, duration 3 hours, depth 0.0011 (2.6 R_Earth), P3=7.084 days starting at BKJD 2907.02, duration 3.5 hours, depth 0.0032 (4.4 Earth), P4=20.672 days, starting at BKJD 2922.97, duration 4.4 hours, depth 0.0020 (3.5 R_Earth)

246069306 P=9.755 days, starting at BKJD 2915.13, duration 3.5 hours, depth 0.0034 (2.5 R:Earth)

246074314 P=4.6236 days, starting at BKJD 2908.51, duration 3 hours, depth 0.0005 (4.0 R_Earth)

246083370 maybe single transit at BKJD 2920.17, duration 12.75 hours, depth 0.0012 (6.8 R_Earth)

246093390 P1=0.9709 days, starting at BKJD 2906.12, duration 1.5 hours, depth 0.0009 (1.6 R_Earth), P2=26.255 days, starting at BKJD 2908.37, duration 3.5 hours, depth 0.0026 (2.6 R_Earth), it could be a glitch though, since only two transits look good, the third is not visible

246095313 P=14.486 days, starting at BKJD 2914.09, duration 6.9 hours, depth 0.0032 (4.2 R_Earth)

246099088 maybe single transit at BKJD 2919.65, duration 7.4 hours, depth 0.0014 (7.1 R_Earth)

246130778 P=23.76 days, starting at BKJD 2924.16, duration 2.5 hours, depth 0.025 (11.9 R_Earth)

246199087 MPC P1=1.5107 days, starting at BKJD 2906.53, duration 2.0 hours, depth 0.0113 (1.2 R_Earth), P2=2.4215 days, strarting at BKJD 2907.54, duration 1,5 hours, depth 0.0052 (0.78 R_Earth), P3=4.0498 days, starting at BKJD 2910.03, duration 2.0 hours, depth 0.0052 (0.78 R_Earth), P4=6.095 days, starting at BKJD 2906.68, duration 2.0 hours, depth 0.0059 (0.83 R_Earth), P5=9.2065 days, starting at BKJD 2912.02, duration 1.5 hours, depth 0.0059 (0.084 R_Earth), P6=12.293 days, starting at BKJD 2905.86, duration 2.0 hours, depth 0.0066 (0.88 R_Earth), Tappist-1

245995977 P=3.3126 days, starting at BKJD 2906.90, duration 3 hours, 0.0022 (4.3 R_Earth)

246239053 MPC P1=8.175 days, starting at BKJD 2912.93, duration 4.5 hours, depth 0.0005 (2.6 R_Earth), P2=12.75 days, starting at BKJD 2913.36, duration 3.5 hours, depth 0.0006 (2.8 R_Earth), P3=19.354 days, starting at BKJD 2914.01, duration 4.0 hours, depth 0.0004 (2.2 R_Earth), P4=37.577 days, starting at BKJD 2930.63, duration 4.4 hours, depth 0.0005 (2.6 R_Earth)

246253528 P=9.7549 days, starting at BKJD 2915.10, duration 4.9 hours, depth 0.0058 (5.6 R_Earth), maybe another transit at BKJD 2930.66, duration 4.5 hours, depth 0.0104 (7.4 R_Earth)

246265680 P=8.635 days, starting at BKJD 2906.20, duration 7.3 hours, depth 0.0144 (8.5 R_Earth)

246290342 P1=16.599 days, starting at BKJD 2913.44, duration 4.4 hours, depth 0.0021, P2=11.687 days, starting at BKJD 2911.22, duration 4.4 hours, depth 0.0007

246389858 P1=1.2088 days, starting at BKJD 2905.83, duration 2.5 hours, depth 0.0007, P2=3.6482 days, starting at BKJD 2905.55, duration 2.5 hours, depth 0.0004, P3=6.2010 days, duration 2.0 hours, depth 0.0008, see also https://arxiv.org/abs/1709.01527

246471177 maybe transit at BKJD 2951.35, duration 5.88, depth 0.0020 (10.6 R_Earth)

246471491 MPC P1=3.47165 days, strating at BKJD 2906.89, duration 3.0 days, depth 0.0011, P2=7.1438 days, starting at BKJD 2911.50, duration 3.0 hours, depth 0.0023, P3=10.4406 days, starting at BKJD 2912.38, duration 3.5 hours, depth 0.0016, P4=14.76795 days, starting at BKJD 2908.88, duration 2.5 hours, depth 0.0013

251456139 P=1.565 days, starting at BKJD 2906.0, duration 4.4 hours, depth 0.024

EB candidates:

245942107 eclipse at BKJD 2906.56, 2940.09, 2974.70, duration 6.4 hours, depth around 12 R_Earth, delta_t =33.53 days and 34.61, period 68.16 days. Mentioned by Ivan wit a single dip at 2906.54

246199307 eclipse at BKJD 2948.06, duration 4.5 hours, depth 0.155 (75 R_Earth)

246302531 eclipse at BKJD 2914.99, duration 4.4 hours, depth 0.0639

246318828 eclipse at BKJD 2915.00, duration 4 hours, depth 0.0333

246347783 P=11.732 days, mentioned by Ivan with a single eclipse

246361128 eclipse at BKJD 2911.20, duration 6.8 hours, depth 0.0455

251456020 P=2.3658 days

251456923 eclipse at BKJD 2948.05

251456842 eclipse at BKJD 2945.89

Others:

246271928 maybe Cepheid, P=4.939 days

glitch at BKJD 2948.03, for example EPIC 251456951 and 246423593

Posted September 6, 2017 8:58 PM
by Artman40

https://arxiv.org/abs/1709.01527

" Three Small Super-Earths Transiting the nearby star GJ 9827"

"
```
We report on the discovery of three transiting planets around GJ~9827.
```
The planets have radii of 1.75+0.11−0.12, 1.36+0.09−0.09, and 2.10+0.15−0.15~R⊕, and periods of 1.20896, 3.6480, and 6.2014 days, respectively. The detection was made in Campaign 12 observations as part of our K2 survey of nearby stars. GJ~9827 is a V=10.39~mag K6V star at distance of 30.3 parsecs and the nearest star to be found hosting planets by Kepler and K2.
The radial velocity follow-up, high resolution imaging, and detection of multiple transiting objects near commensurability drastically reduce the false positive probability.
The orbital periods of GJ~9827~b, c and d planets are very close to the 1:3:5 mean motion resonance. Our preliminary analysis shows that GJ~9827 planets are excellent candidates for atmospheric observations.
Besides, the planetary radii span both sides of the rocky and gaseous divide, hence the system will be an asset in expanding our understanding of the threshold. "

Posted September 7, 2017 5:14 AM
by zoo3hans in response to Artman40's comment.

GJ-9827 is EPIC 246389858

I get from LcViewer:

P1=1.2088 days, P2=3.6482 days, P3=6.2010 days.

Posted September 7, 2017 10:50 AM
by zoo3hans in response to ajamyajax's comment.

Yes, in the K2_C12_Coss data (by Andrew Vanderburg), it's obviously an EB.

Posted September 9, 2017 7:50 PM
by ajamyajax in response to zoo3hans's comment.

Good to see, thanks!

Posted September 12, 2017 2:22 AM
by ProtoJeb21

EPIC 245950175 (EE-1) has just been confirmed as K2-138. The original four planets, plus a fifth that shutcheon from Exoplanet Explorers found, and now confirmed as K2-138 b, c, d, e, and f. Shutcheon’s sixth candidate is under investigation. I’m not too sure what the EE scientists think of the potential seventh and eighth planets that could and should exist between K2-138e and K2-138.06.

Posted January 11, 2018 7:56 PM
by ajamyajax

Nice going about K2-138! Congrats to all involved.

Posted January 12, 2018 1:21 AM
by ProtoJeb21

Yet another confirmed Campaign 12 planet; K2-141b, a horrific hellish abomination orbiting every 0.28 days. Could have a star-facing side with temperatures in excess of 3,000 K.
https://arxiv.org/pdf/1801.03502.pdf

Posted January 12, 2018 2:49 PM
by zoo3hans in response to ProtoJeb21's comment.

Yes, the paper can be read at https://arxiv.org/pdf/1801.03874.pdf

I think we have at least 9 (!) planets here:

ID Name code=1 EPIC start_date end_date period color_code

P001 PlanetaryTransit 1 245950175 2907.565658 2907.708694 8.263000000000 1408

P002 PlanetaryTransit2 1 245950175 2918.347235 2918.551571 12.756000000000 872

P003 PlanetaryTransit3 1 245950175 2907.272222 2907.415258 3.558000000000 332

P004 PlanetaryTransit4 1 245950175 2910.126629 2910.241807 5.403425000000 634

P005 PlanetaryTransit5 1 245950175 2908.278786 2908.421808 5.404000000000 357

P006 PlanetaryTransit6 1 245950175 2907.734000 2907.814000 2.464000000000 119

P007 PlanetaryTransit7 1 245950175 2910.076293 2910.239749 27.031263000000 796

P008 PlanetaryTransit8 1 245950175 2940.663985 2940.964845 41.950753000000 902

P009 PlanetaryTransit9 1 245950175 2934.492310 2934.717058 41.067452000000 525

Cheers, Hans Martin

Posted January 12, 2018 7:54 PM
by ProtoJeb21 in response to zoo3hans's comment.

Did you use Everest2 or SFF data to find those signals? With SFF data, P005 and P006 turn out absolutely terrible (negative sigma).

EDIT: I just realized that signals like P005 and P006 are marking potential long-period candidates...right?

Posted January 12, 2018 9:04 PM
by zoo3hans in response to ProtoJeb21's comment.

I used the C12_Corr data provided by Al Schmitt and LcViewer. I have to admit that P005 is not too much convincing, but the period must be somewhere according to the paper mentioned above.

Posted January 12, 2018 9:11 PM
by ProtoJeb21 in response to zoo3hans's comment.

Okay, I'm downloading the corrected C12 data to see what I can find. Also, with SFF data, your P008 looks really good. I'm surprised that me, shutcheon, and Vidar87 all missed it when doing our analysis of EPIC 245950175.

Posted January 12, 2018 10:01 PM
by ProtoJeb21

Two newly confirmed Hot Jupiters, one of which is in Campaign 12 and has THREE suns.
https://arxiv.org/abs/1801.07959

Posted January 25, 2018 1:06 PM

C12 K2 Finds

SSO

PC

EB's

Other