The Kepler-1857 system contains 1 exoplanet. It is located 2783.01 light years away from the solar system.
| Mass | 0.87 solar masses |
| Radius | 1.01 solar radiae |
| Temperature | 6074 kelvin |
| Stellar Metallicity | -0.54 decimal exponent |
| Age | 3.5 billion years |
With a mass below 5 Earth masses, a density of 3.28, and a semi-major axis of 0.0807 astronomical units, Kepler-1857 b could, potentially, be an ocean world - a planet with no dry land.
| Mass | 4.500 Earth masses |
| Density | 3.280 grams per cubic centimeter |
| Radius | 1.961 Earth radiae |
| Semi-major Axis | 0.0807 AU |
| Eccentricity | 0 |
| Orbital Period | 8.943 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2022-02 |
| Reference | Valizadegan et al. 2022 |