The K2-133 system contains 4 exoplanets. It is located 245.17 light years away from the solar system.
| Mass | 0.46 solar masses |
| Radius | 0.46 solar radiae |
| Temperature | 3655 kelvin |
| Stellar Metallicity | - decimal exponent |
| Age | - billion years |
At 2.360 Earth masses, K2-133 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 | 2.360 Earth masses |
| Density | 5.390 grams per cubic centimeter |
| Radius | 1.340 Earth radiae |
| Semi-major Axis | 0.03194 AU |
| Eccentricity | NaN |
| Orbital Period | 3.071 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2018-01 |
| Reference | Wells et al. 2018 |
At 3.212 Earth masses, K2-133 c 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 | 3.200 Earth masses |
| Density | 4.270 grams per cubic centimeter |
| Radius | 1.603 Earth radiae |
| Semi-major Axis | 0.04341 AU |
| Eccentricity | NaN |
| Orbital Period | 4.868 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2018-01 |
| Reference | Wells et al. 2018 |
With a mass below 5 Earth masses, a density of 3.19, and a semi-major axis of 0.07487 astronomical units, K2-133 d could, potentially, be an ocean world - a planet with no dry land.
| Mass | 4.670 Earth masses |
| Density | 3.190 grams per cubic centimeter |
| Radius | 2.003 Earth radiae |
| Semi-major Axis | 0.07487 AU |
| Eccentricity | NaN |
| Orbital Period | 11.025 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2018-01 |
| Reference | Wells et al. 2018 |
At 3.657 Earth masses, K2-133 e 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 | 3.640 Earth masses |
| Density | 3.860 grams per cubic centimeter |
| Radius | 1.730 Earth radiae |
| Semi-major Axis | 0.1346 AU |
| Eccentricity | NaN |
| Orbital Period | 26.584 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2019-08 |
| Reference | Wells et al. 2019 |