Kepler-68b
Kepler-68b is an exoplanet orbiting the Sun-like star Kepler-68 in the constellation of Cygnus. Discovered by planetary-transit methods by the Kepler space telescope in February 2013, it has a radius of 2.31 ± 0.07 that of Earth and a density of 2.46–4.3 g/cm3. It has an orbital period of 5.398763 days at a distance of about 0.0617 AU from its star. Doppler measurements were made to determine its mass to be 5.79 times that of Earth (0.026 MJ).
| 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 | |
| 0.06170±0.00056 AU | |
| 5.398763 d | |
| Inclination | 87.60±0.90 º |
| Semi-amplitude | 2.7+0.48 −0.46 m/s |
| Star | Kepler-68 |
| Physical characteristics | |
Mean radius | 2.31+0.06 −0.09 R🜨 |
| Mass | 7.65+1.37 −1.32 M🜨 |
With a density of 2.6 g/cm3 it has physical characteristics of both a super-Earth and a mini-Neptune.
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