The Kepler-389 system contains 2 exoplanets. It is located 2663.26 light years away from the solar system.
| Mass | 0.81 solar masses |
| Radius | 0.79 solar radiae |
| Temperature | 5376 kelvin |
| Stellar Metallicity | 0.16 decimal exponent |
| Age | 4.68 billion years |
At 2.891 Earth masses, Kepler-389 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 | 2.890 Earth masses |
| Density | 4.610 grams per cubic centimeter |
| Radius | 1.510 Earth radiae |
| Semi-major Axis | 0.041 AU |
| Eccentricity | 0 |
| Orbital Period | 3.244 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 2.732 Earth masses, Kepler-389 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 | 2.730 Earth masses |
| Density | 4.820 grams per cubic centimeter |
| Radius | 1.460 Earth radiae |
| Semi-major Axis | 0.11 AU |
| Eccentricity | 0 |
| Orbital Period | 14.511 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 |