Kepler-20e
Astronomical discovery
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Kepler-20e is an exoplanet orbiting Kepler-20. The planet is notable as it is the first planet with a smaller radius than Earth found orbiting a Sun-like star. The planet is second-closest to the star after Kepler-20b, and at 1,040 K, it is far... Wikipedia
Discovered: December 20, 2011
Mean radius: 0.868+0.074; −0.096 R🜨
Orbits: Kepler-20
Discovered by: Kepler team
Orbital period (sidereal): 6.098493 d
Star: Kepler-20 (KOI-070)
Temperature: 1,040 K (770 °C; 1,410 °F)