 Artist's impression of Kepler-37b. | |
| 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] | |
| 0.3098+0.0059 −0.0076 R🜨 | |
| Mass | <0.79 M🜨[a] |
| Temperature | 718±10 K (445 °C; 833 °F, equilibrium) |
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]
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