The K2-228 system contains 1 exoplanet. It is located 422.24 light years away from the solar system.
| Mass | 0.71 solar masses |
| Radius | 0.65 solar radiae |
| Temperature | 4715 kelvin |
| Stellar Metallicity | -0.25 decimal exponent |
| Age | - billion years |
At 1.927 Earth masses, K2-228 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 | 1.920 Earth masses |
| Density | 5.960 grams per cubic centimeter |
| Radius | 1.210 Earth radiae |
| Semi-major Axis | 0.0338 AU |
| Eccentricity | NaN |
| Orbital Period | 2.698 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2018-03 |
| Reference | Mayo et al. 2018 |