Kepler-20g
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | Kepler-20 (KOI-070) | |
| Constellation | Lyra | |
| Right ascension | (α) | 19h 10m 47.524s |
| Declination | (δ) | +42° 20′ 19.30″ |
| Apparent magnitude | (mV) | 12.51 |
| Mass | (m) | 0.912±0.035 M☉ |
| Radius | (r) | 0.944+0.06 −0.095 R☉ |
| Temperature | (T) | 5466±93 K |
| Metallicity | [Fe/H] | 0.02±0.04 |
| Age | 8.8+4.7 −2.7 Gyr | |
| Physical characteristics | ||
| Mass | (m) | 19.96+3.08 −3.61[1] M⊕ |
| Temperature | (T) | 524 ± 12 K |
| Orbital elements | ||
| Semi-major axis | (a) | 0.2055 AU |
| Eccentricity | (e) | ≤ 0.16 |
| Orbital period | (P) | 77.61184 d |
| Discovery information | ||
| Discovery date | 24 August 2016 | |
| Discoverer(s) | ||
| Discovery method | Radial velocity | |
| Discovery status | ||
Kepler-20g is an non-transiting exoplanet orbiting Kepler-20. Its radius is about twice that of Earth, with a minimum mass 19.96+3.08
−3.61[1] Earth masses. Kepler-20g was announced on 24 August 2016.
References
- 1 2 http://arxiv.org/abs/1608.06836 A 1.9 Earth radius rocky planet and the discovery of a non-transiting planet in the Kepler-20 system
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