Kepler-20b

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Kepler-20b
Discovery
Discovered byKepler team
Discovery date20 December 2011
Transit (Kepler Mission)
Orbital characteristics
0.04537 AU
Eccentricity<0.32
3.6961219 d
Inclination86.50+0.36
−0.31
StarKepler-20 (KOI-070)
Physical characteristics
Mean radius
1.868+0.066
−0.034
R
Mass9.7+1.41
−1.44
[1] M
Mean density
8.2+2.0
−2.7
g cm−3
Temperature1014

Kepler-20b is an exoplanet orbiting Kepler-20. It is classified as a Super-Earth, as it has a radius and mass greater than that of Earth. At about 1.87 R, it would most likely be a Mini-Neptune, but its high mass of 9.7 M implies that it is an iron-rich rocky world. Along with the other four planets in the system, Kepler-20b was announced on 20 December 2011.

References[edit]

  1. ^ 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