The Kepler-400 system contains 2 exoplanets. It is located 2759.18 light years away from the solar system.
| Mass | 1.08 solar masses |
| Radius | 1.15 solar radiae |
| Temperature | 5886 kelvin |
| Stellar Metallicity | 0.084 decimal exponent |
| Age | 3.63 billion years |
At 3.371 Earth masses, Kepler-400 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 | 3.360 Earth masses |
| Density | 4.110 grams per cubic centimeter |
| Radius | 1.650 Earth radiae |
| Semi-major Axis | 0.087 AU |
| Eccentricity | 0 |
| Orbital Period | 9.024 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-03 |
| Reference | Rowe et al. 2014 |
At 2.827 Earth masses, Kepler-400 c 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 | 2.830 Earth masses |
| Density | 4.700 grams per cubic centimeter |
| Radius | 1.490 Earth radiae |
| Semi-major Axis | 0.134 AU |
| Eccentricity | 0 |
| Orbital Period | 17.341 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-03 |
| Reference | Rowe et al. 2014 |