The Kepler-390 system contains 2 exoplanets. It is located 1419.68 light years away from the solar system.
| Mass | 0.86 solar masses |
| Radius | 0.78 solar radiae |
| Temperature | 5166 kelvin |
| Stellar Metallicity | -0.044 decimal exponent |
| Age | 3.24 billion years |
At less than 1.5 Earth masses, Kepler-390 b is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 0.477 Earth masses |
| Density | 4.750 grams per cubic centimeter |
| Radius | 0.820 Earth radiae |
| Semi-major Axis | 0.065 AU |
| Eccentricity | 0 |
| Orbital Period | 6.738 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 less than 1.5 Earth masses, Kepler-390 c is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 0.418 Earth masses |
| Density | 4.660 grams per cubic centimeter |
| Radius | 0.790 Earth radiae |
| Semi-major Axis | 0.101 AU |
| Eccentricity | 0 |
| Orbital Period | 13.060 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 |