Kepler-1229b
Kepler-1229b (also known by its Kepler Object of Interest designation KOI-2418.01) is a confirmed super-Earth exoplanet, likely rocky, orbiting within the habitable zone of the red dwarf Kepler-1229, located about 870 light years (267 parsecs) from Earth in the constellation of Cygnus. It was discovered in 2016 by the Kepler space telescope. The exoplanet was found by using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured.
An artistic simulation of the potentially habitable exoplanet Kepler-1229b, with its star (center). The Milky Way can be seen in the background. | |
| Discovery | |
|---|---|
| Discovered by | Kepler spacecraft |
| Discovery date | May 12, 2016 |
Detection method | transit |
| Orbital characteristics | |
Semi-major axis | 0.2896 AU (43,320,000 km) |
| Eccentricity | ~0 |
Orbital period (sidereal) | 86.829 d |
| Inclination | ~89.5 |
| Star | Kepler-1229 (KOI-2418) |
| Physical characteristics | |
Mean radius | 1.40+0.11 −0.13 R🜨 |
| Mass | ~2.7 ME |
| Temperature | 213 K (−60 °C; −76 °F) |
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