The Kepler-397 system contains 2 exoplanets. It is located 3160.45 light years away from the solar system.
| Mass | 0.84 solar masses |
| Radius | 0.77 solar radiae |
| Temperature | 5307 kelvin |
| Stellar Metallicity | -0.24 decimal exponent |
| Age | 5.25 billion years |
At more than 10 Earth masses, Kepler-397 b is an ice giant, a planet that is made up mostly of volatiles like water, amonia and methane, and enveloped by a dense hydrogen and helium atmosphere, much like Uranus and Neptune.
| Mass | 6.620 Earth masses |
| Density | 2.440 grams per cubic centimeter |
| Radius | 2.460 Earth radiae |
| Semi-major Axis | 0.144 AU |
| Eccentricity | 0 |
| Orbital Period | 22.251 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 more than 10 Earth masses, Kepler-397 c is an ice giant, a planet that is made up mostly of volatiles like water, amonia and methane, and enveloped by a dense hydrogen and helium atmosphere, much like Uranus and Neptune.
| Mass | 31.600 Earth masses |
| Density | 0.736 grams per cubic centimeter |
| Radius | 6.180 Earth radiae |
| Semi-major Axis | 0.48 AU |
| Eccentricity | 0 |
| Orbital Period | 135.499 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 |