Kepler-20g

Kepler-20g
Exoplanet List of exoplanets
Parent star
Star Kepler-20 (KOI-070)
Constellation Lyra
Right ascension (α) 19h 10m 47.5235s[1]
Declination (δ) +42° 20′ 19.299″[1]
Apparent magnitude (mV) 12.51
Distance929±6[1] ly
(285±2[1] pc)
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[2] 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 a non-transiting exoplanet orbiting Kepler-20. Its radius is about twice that of Earth, with a minimum mass 19.96+3.08
−3.61[2] Earth masses. Kepler-20g was announced on 24 August 2016.

References

  1. 1 2 3 4 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia Data Release 2 Vizier catalog entry
  2. 1 2 https://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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