Astronomy:Kepler-87c
From HandWiki
| 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
2013 in space | ||||||
|---|---|---|---|---|---|---|
| Launches |
|     | ||||
| Impact events | ||||||
| Novae | ||||||
| Comets | ||||||
| NEOs | ||||||
| Exoplanets |
| |||||
| Miscellaneous | ||||||
 |  |
