Kepler-20c

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Kepler-20c
Discovery
Discovered by Kepler team
Discovery date20 December 2011
Transit (Kepler Mission)
Orbital characteristics [1]
0.0936 ± 0.0018 AU (14,000,000 ± 270,000 km)
Eccentricity <0.076
10.8540774(21)  d
Inclination 89.815°+0.036°
−0.63°
Star Kepler-20 (KOI-070)
Physical characteristics [1]
2.894+0.036
−0.033 R🜨
Mass 11.1±2.1 M🜨
Mean density
2.51+0.48
−0.47  g⋅cm−3
Temperature 828±11  K (555 °C; 1,031 °F, equilibrium)

    Kepler-20c is an exoplanet orbiting Kepler-20. It has a mass similar to Neptune but is slightly smaller. Despite being the third-closest planet to Kepler-20, it is still close to the star, meaning that it is a hot Neptune. Along with the other four planets in the system, Kepler-20c was announced on 20 December 2011.

    References

    1. 1 2 Bonomo, A. S.; Dumusque, X.; et al. (September 2023). "Cold Jupiters and improved masses in 38 Kepler and K2 small planet systems from 3661 HARPS-N radial velocities. No excess of cold Jupiters in small planet systems". Astronomy & Astrophysics . 677: A33. arXiv: 2304.05773 . Bibcode:2023A&A...677A..33B. doi:10.1051/0004-6361/202346211. S2CID   258078829.
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