K2-66b
| Discovery | |
|---|---|
| Discovered by | K2 |
| Discovery date | 2017 |
| Transit | |
| Orbital characteristics | |
| 0.05983±0.00072 AU | |
| 5.06963±0.00081 d | |
| Inclination | 86.6+4.4 −2.4° |
| Star | K2-66 |
| Physical characteristics | |
| 2.49 R🜨 | |
| Mass | 0.06702 MJ |
Mean density | 7.6 g/cm3 |
K2-66b is a confirmed mega-Earth orbiting the subgiant K2-66, about 520 parsecs (1,700 ly) from Earth in the direction of Aquarius. It is an extremely hot and dense planet heavier than Neptune, but with only about half its radius.