The Kepler-252 system contains 2 exoplanets. It is located 1237.51 light years away from the solar system.
| Mass | 0.61 solar masses |
| Radius | 0.55 solar radiae |
| Temperature | 4208 kelvin |
| Stellar Metallicity | -0.13 decimal exponent |
| Age | 13.9 billion years |
At 2.042 Earth masses, Kepler-252 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 | 2.040 Earth masses |
| Density | 6.020 grams per cubic centimeter |
| Radius | 1.230 Earth radiae |
| Semi-major Axis | 0.058 AU |
| Eccentricity | 0 |
| Orbital Period | 6.668 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-252 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 | 5.270 Earth masses |
| Density | 2.910 grams per cubic centimeter |
| Radius | 2.150 Earth radiae |
| Semi-major Axis | 0.08 AU |
| Eccentricity | 0 |
| Orbital Period | 10.848 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 |