Kepler-87c

Kepler-87c
Discovery
Discovered by	Ofir et al.
Discovery date	8 October 2013
Detection method	Transit (Kepler Mission)
Orbital characteristics
Semi-major axis	0.664 AU (99,300,000 km)
Eccentricity	0.039
Orbital period (sidereal)	191 d
Inclination	89.588
Star	Kepler-87 (KOI-1574)
Physical characteristics
Mean radius	6.14±0.29 R🜨
Mass	6.4±0.8 ME
Mean density	0.152 g/cm3 (0.0055 lb/cu in)
Temperature	403 K (130 °C; 266 °F)

Kepler-87c is a planet orbiting Kepler-87, a star slightly more massive than the Sun and nearing the end of its main-sequence period. ^[1]

Characteristics

Despite being larger than Neptune, Kepler-87c is only about 6.4 times more massive than Earth. This means that its density is only 0.152 g/cm³. This is the first planet with a comparable mass to have such a low density. Its equilibrium temperature is 130 °C.^[2]

References

^ ^a ^b "The Extrasolar Planet Encyclopaedia — Kepler-87c". Extrasolar Planets Encyclopaedia. Retrieved 10 September 2023.
^ Ofir, Aviv; et al. (2014). "An independent planet search in the Kepler dataset. II. An extremely low-density super-Earth mass planet around Kepler-87". Astronomy and Astrophysics. 561. A103. arXiv:1310.2064. Bibcode:2014A&A...561A.103O. doi:10.1051/0004-6361/201220935. S2CID 118691606.

External links

Beyond Earthly Skies - An Extremely Low Density Super-Earth

This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it.

[exoplanet-1] "The Extrasolar Planet Encyclopaedia — Kepler-87c". Extrasolar Planets Encyclopaedia. Retrieved 10 September 2023.

[Ofir2014-2] Ofir, Aviv; et al. (2014). "An independent planet search in the Kepler dataset. II. An extremely low-density super-Earth mass planet around Kepler-87". Astronomy and Astrophysics. 561. A103. arXiv:1310.2064. Bibcode:2014A&A...561A.103O. doi:10.1051/0004-6361/201220935. S2CID 118691606.

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