Kepler-440b
Kepler-440b (also known by its Kepler Object of Interest designation KOI-4087.01) is a confirmed super-Earth exoplanet orbiting within the habitable zone of Kepler-440, about 850 light-years (261 pc) from Earth. The planet was discovered by NASA's Kepler spacecraft using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. NASA announced the confirmation of the exoplanet on 6 January 2015.
| Discovery | |
|---|---|
| Discovery site | Kepler Space Observatory |
| Discovery date | 2015 |
Detection method | Transit |
| Orbital characteristics | |
Semi-major axis | 0.24200 AU (36,203,000 km) |
| Eccentricity | >0.340 |
Orbital period (sidereal) | 101.11141000 d |
| Inclination | 89.930 |
| Star | Kepler-440 |
| Physical characteristics | |
Mean radius | 1.860 R🜨 |
| Temperature | 273 K (0 °C; 32 °F). |
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