The Kepler-866 system contains 1 exoplanet. It is located 2109.14 light years away from the solar system.
| Mass | 0.75 solar masses |
| Radius | 0.71 solar radiae |
| Temperature | 4751 kelvin |
| Stellar Metallicity | -0.07 decimal exponent |
| Age | 4.27 billion years |
At 3.307 Earth masses, Kepler-866 b is a so called Super Earth. Super Earths could be terrestrial worlds like Earth, but they could also be ocean worlds or terrestrial worlds wrapped in a substantial atmosphere, in which case some refer to them as Mini Neptunes.
| Mass | 3.290 Earth masses |
| Density | 4.170 grams per cubic centimeter |
| Radius | 1.630 Earth radiae |
| Semi-major Axis | 0.0331 AU |
| Eccentricity | 0 |
| Orbital Period | 2.617 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-05 |
| Reference | Morton et al. 2016 |