Kepler-68c
Artist's impression of Kepler-68 c and size comparison with Earth | |
| Discovery | |
|---|---|
| Discovered by | Gilliland et al. |
| Discovery site | Kepler Space Observatory |
| Discovery date | 2013 |
| Transits, and transit-timing variations | |
| Designations | |
| KOI-246.01 | |
| Orbital characteristics | |
| 0.09059±0.00082 AU | |
| 9.605085±0.000072 d | |
| Inclination | 86.93±0.41 º |
| Semi-amplitude | 0.59+0.50 −0.52 m/s |
| Star | Kepler-68 |
| Physical characteristics | |
| 0.953+0.037 −0.042 R🜨 | |
| Mass | 2.02+1.72 −1.78 M🜨 |
Kepler-68c is an Earth-sized planet orbiting the star Kepler-68 in the constellation of Cygnus. It was discovered by planetary-transit methods by the Kepler space telescope in February 2013. It has a mass of 4.8+2.5
−3.6 times that of Earth (0.015 MJ) and a radius of 0.953+0.037
−0.042 Earth radii. It has an orbital period of 9.605085 days at a distance of about 0.09059 AU from its star. Relatively wide constraints on Kepler-68c's mass are the result lack of detection of the planet through radial-velocity and transit-timing-variation methods.