The K2-57 system contains 1 exoplanet. It is located 861.75 light years away from the solar system.
| Mass | 0.68 solar masses |
| Radius | 0.62 solar radiae |
| Temperature | 4434 kelvin |
| Stellar Metallicity | - decimal exponent |
| Age | - billion years |
At more than 10 Earth masses, K2-57 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 | 5.060 Earth masses |
| Density | 3.000 grams per cubic centimeter |
| Radius | 2.100 Earth radiae |
| Semi-major Axis | 0.0746 AU |
| Eccentricity | NaN |
| Orbital Period | 9.006 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-09 |
| Reference | Crossfield et al. 2016 |