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) | ±0.035 0.912 M☉ |
Radius | (r) | +0.06 −0.095 0.944 R☉ |
Temperature | (T) | ±93 5466 K |
Metallicity | [Fe/H] | ±0.04 0.02 |
Age | +4.7 −2.7 8.8 Gyr | |
Physical characteristics | ||
Mass | (m) | +3.08 −3.61 19.96[1] M⊕ |
Temperature | (T) | 524 ± 12 K |
Orbital elements | ||
Semi-major axis | (a) | 0.2055AU |
Eccentricity | (e) | ≤ 0.16 |
Orbital period | (P) | 84 77.611d |
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 +3.08
−3.61 19.96[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
This article is issued from Wikipedia - version of the 10/31/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.