Kepler-37b
Sub-Earth orbiting Kepler-37, currently the smallest known exoplanet / From Wikipedia, the free encyclopedia
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Kepler-37b is an exoplanet orbiting the star Kepler-37 in the constellation Lyra.[3] As of February 2013[update], it is the smallest planet discovered around a main-sequence star, with a radius slightly greater than that of the Moon and slightly smaller than that of Mercury.[4] The measurements do not constrain its mass, but masses above a few times that of the Moon give unphysically high densities.[5]
Quick Facts Discovery, Discovery site ...
Discovery[1] | |
---|---|
Discovery site | Kepler space telescope |
Discovery date | February 20, 2013 |
Transit | |
Orbital characteristics[2] | |
0.1019±0.0014 AU | |
Eccentricity | <0.098 |
13.367020(60) d | |
Inclination | 88.63°+0.30° −0.53° |
Star | Kepler-37 |
Physical characteristics[2] | |
Mean radius | 0.3098+0.0059 −0.0076 R🜨 |
Mass | <0.79 M🜨[lower-alpha 1] |
Temperature | 718±10 K (445 °C; 833 °F, equilibrium) |
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