Astronomy:Kepler-87c

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Kepler-87c
Discovery
Discovered byOfir et al.
Discovery date8 October 2013
Transit (Kepler Mission)
Orbital characteristics
0.664 AU (99,300,000 km)
Eccentricity0.039
Orbital period191 d
Inclination89.588
StarKepler-87 (KOI-1574)
Physical characteristics
Mean radius6.14±0.29 R
Mass6.4±0.8 M
Mean density0.152 g/cm3 (0.0055 lb/cu in)
Physics400


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

External links