| K2-3b | |
| Discovery Site: | Kepler Space Observatory |
| Discovered: | 2015 |
| Discovery Method: | Transit |
| Apsis: | astron |
| Star: | K2-3 |
| Single Temperature: | (501.3K, equilibrium) |
K2-3b, also known as EPIC 201367065 b, is an exoplanet orbiting the red dwarf K2-3 every 10 days.[1] It is the largest and most massive planet of the K2-3 system, with about 2.1 times the radius of Earth and about 5 times the mass. Its density of about 3.1 g/cm3 may indicate a composition of almost entirely water, or a hydrogen envelope comprising about 0.7% of the planet's mass.