The Kepler-1398 system contains 2 exoplanets. It is located 2779.51 light years away from the solar system.
| Mass | 1.13 solar masses |
| Radius | 1.18 solar radiae |
| Temperature | 6126 kelvin |
| Stellar Metallicity | 0.01 decimal exponent |
| Age | 3.09 billion years |
At less than 1.5 Earth masses, Kepler-1398 b is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 0.666 Earth masses |
| Density | 5.020 grams per cubic centimeter |
| Radius | 0.900 Earth radiae |
| Semi-major Axis | 0.0392 AU |
| Eccentricity | 0 |
| Orbital Period | 2.788 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 |
At less than 1.5 Earth masses, Kepler-1398 c is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 1.080 Earth masses |
| Density | 5.430 grams per cubic centimeter |
| Radius | 1.030 Earth radiae |
| Semi-major Axis | 0.051 AU |
| Eccentricity | 0 |
| Orbital Period | 4.138 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 |