The Kepler-157 system contains 3 exoplanets. It is located 2523.51 light years away from the solar system.
| Mass | 1.02 solar masses |
| Radius | 1.04 solar radiae |
| Temperature | 5774 kelvin |
| Stellar Metallicity | -0.059 decimal exponent |
| Age | 4.07 billion years |
At 2.302 Earth masses, Kepler-157 b is a so called Super Earth. Super Earths could be terrestrial worlds like Earth, but they could also be ocean worlds or terrestrial worlds wrapped in a substantial atmosphere, in which case some refer to them as Mini Neptunes.
| Mass | 2.300 Earth masses |
| Density | 5.500 grams per cubic centimeter |
| Radius | 1.320 Earth radiae |
| Semi-major Axis | 0.028 AU |
| Eccentricity | 0 |
| Orbital Period | 1.732 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-157 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 | 5.650 Earth masses |
| Density | 2.760 grams per cubic centimeter |
| Radius | 2.240 Earth radiae |
| Semi-major Axis | 0.11 AU |
| Eccentricity | 0 |
| Orbital Period | 13.540 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 2.732 Earth masses, Kepler-157 d is a so called Super Earth. Super Earths could be terrestrial worlds like Earth, but they could also be ocean worlds or terrestrial worlds wrapped in a substantial atmosphere, in which case some refer to them as Mini Neptunes.
| Mass | 2.730 Earth masses |
| Density | 4.820 grams per cubic centimeter |
| Radius | 1.460 Earth radiae |
| Semi-major Axis | 0.0698 AU |
| Eccentricity | 0 |
| Orbital Period | 7.026 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 |