KIC 8016431 Possible Unlisted Planet Candidate

KIC 8016431 in Kepler Q7 at Planet Hunters

Planet Hunters forum Talk member Tesh90 flagged this possible unlisted planet candidate transit in the Kepler Q7 light curve. A second transit was identified near BJD 1420.2  along with transit analysis by Hans Martin (Zoo3hans).

Comments by Planet Hunters forum Talk member Kian Jek: 

Here is the TAP run:

The transit curve fit:


The transit depth is 933 ppm with a duration of 15.07 hr. In order to make the orbital parameters consistent with the stellar data at MAST, I find that I get a better fit if the stellar radius is adjusted up to 0.89x Sol instead of 0.621, and the stellar mass set to 0.95x Sol. This is more reasonable for a 5671K Teff, and makes this closer to a Sol-like star.

If so, then we get a 2.79x (+/- 0.21) RE planet, orbiting at 1.624 (+/- 0.21) AU from the primary. The Teq is approx. 184K.

You can follow the thread on this planet at Planet Hunters forum Talk thread here.