Astronomy:Kepler-87c
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Discovery | |
---|---|
Discovered by | Ofir et al. |
Discovery date | 8 October 2013 |
Transit (Kepler Mission) | |
Orbital characteristics | |
0.664 AU (99,300,000 km) | |
Eccentricity | 0.039 |
Orbital period | 191 d |
Inclination | 89.588 |
Star | Kepler-87 (KOI-1574) |
Physical characteristics | |
Mean radius | 6.14±0.29 R⊕ |
Mass | 6.4±0.8 M⊕ |
Mean density | 0.152 g/cm3 (0.0055 lb/cu in) |
Physics | 400 |
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
- ↑ "The Extrasolar Planet Encyclopaedia — Kepler-87c". Extrasolar Planets Encyclopaedia. https://exoplanet.eu/catalog/kepler_87_c--1233/.
- ↑ 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. doi:10.1051/0004-6361/201220935. Bibcode: 2014A&A...561A.103O. https://www.aanda.org/articles/aa/full_html/2014/01/aa20935-12/aa20935-12.html.
External links
Original source: https://en.wikipedia.org/wiki/Kepler-87c.
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