K2-3b also known as EPIC 201367065 b is an exoplanet orbiting the red dwarf K2-3 every 10 days.[2][4] It is the largest and most massive planet of the K2-3 system, with about 2.3 times the radius of Earth and almost 7 times the mass. Its density of about 3.0 g/cm3 indicates a composition of almost entirely water, or a hydrogen envelope comprising 0.7% of the planet's mass.[3]
| Discovery[1] | |
|---|---|
| Discovery site | Kepler Space Observatory |
| Discovery date | 2015 |
Detection method | Transit |
| Orbital characteristics | |
Semi-major axis | 0.0777+0.0024 −0.0026 AU |
| Eccentricity | 0.060±0.060[2] |
Orbital period (sidereal) | 10.05454±0.00003[3] d |
| Inclination | 89.59+0.24 −0.40[2] |
| Semi-amplitude | 2.7±0.4[3] |
| Star | K2-3 |
| Physical characteristics | |
Mean radius | 2.29±0.23[3] REarth |
| Mass | 6.6±1.1[3] MEarth |
Mean density | 3.0+1.3 −0.9 g cm−3 |
| Temperature | 454 K (181 °C; 358 °F) |
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