K2-229b

K2-229b
Discovery
Discovery site	Kepler Space Observatory
Discovery date	2018
Detection method	Transit
Orbital characteristics
Semi-major axis	0.012888 (± 0.000130) AU
Eccentricity	0
Orbital period (sidereal)	0.584249 (± 0.000014) d; 14.02 h
Inclination	83.9 (± 2.8)
Star	K2-229
Physical characteristics
Mean radius	1.164±0.066 R🜨
Mass	2.59±0.43 ME
Mean density	8.9±2.1 g cm−3
Surface gravity	1.91 +0.59; −0.48 g
Temperature	1,960 K (1,690 °C; 3,070 °F) (equilibrium) ; 2,332 K (2,059 °C; 3,738 °F) (day side)

K2-229b (previously designated EPIC 228801451.01) is an extremely hot, solid, iron-rich exoplanet in a close orbit around the active K-dwarf K2-229 in the constellation Virgo, 335 light years away from Earth.^[3]

^ ^a ^b ^c ^d ^e ^f ^g "K2-229 b CONFIRMED PLANET OVERVIEW PAGE". NASA Exoplanet Archive. Retrieved 2018-03-27.
^ Santerne, A.; et al. (2018). "An Earth-sized exoplanet with a Mercury-like composition". Nature Astronomy. 2 (5): 393–400. arXiv:1805.08405. Bibcode:2018NatAs...2..393S. doi:10.1038/s41550-018-0420-5. S2CID 73667350.
^ "Newly-discovered planet is hot, metallic and dense as Mercury (Update)". Retrieved 2018-03-28.

[NasaExoplanetArchive-1] ^ ^a ^b ^c ^d ^e ^f ^g "K2-229 b CONFIRMED PLANET OVERVIEW PAGE". NASA Exoplanet Archive. Retrieved 2018-03-27.

[arxiv-2] Santerne, A.; et al. (2018). "An Earth-sized exoplanet with a Mercury-like composition". Nature Astronomy. 2 (5): 393–400. arXiv:1805.08405. Bibcode:2018NatAs...2..393S. doi:10.1038/s41550-018-0420-5. S2CID 73667350.

[3] "Newly-discovered planet is hot, metallic and dense as Mercury (Update)". Retrieved 2018-03-28.

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