| Kepler-87c | |
| Discoverer: | Ofir et al. |
| Discovered: | 8 October 2013 |
| Discovery Method: | Transit (Kepler Mission) |
| Apsis: | astron |
| Semimajor: | 0.664AU |
| Eccentricity: | 0.039 |
| Period: | 191 d |
| Inclination: | 89.588 |
| Star: | Kepler-87 (KOI-1574) |
| Mean Radius: | 6.14±0.29 |
| Mass: | 6.4±0.8 |
| Density: | 0.152g/cm3 |
| Single Temperature: | 403K [1] |
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]
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.