The K2-58 system contains 3 exoplanets. It is located 592.78 light years away from the solar system.
| Mass | 0.89 solar masses |
| Radius | 0.86 solar radiae |
| Temperature | 5413 kelvin |
| Stellar Metallicity | 0.11 decimal exponent |
| Age | - billion years |
At more than 10 Earth masses, K2-58 b 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 | 7.650 Earth masses |
| Density | 2.180 grams per cubic centimeter |
| Radius | 2.680 Earth radiae |
| Semi-major Axis | 0.0692 AU |
| Eccentricity | NaN |
| Orbital Period | 7.053 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-09 |
| Reference | Crossfield et al. 2016 |
At 3.244 Earth masses, K2-58 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 | 3.260 Earth masses |
| Density | 4.210 grams per cubic centimeter |
| Radius | 1.620 Earth radiae |
| Semi-major Axis | 0.035 AU |
| Eccentricity | NaN |
| Orbital Period | 2.537 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-09 |
| Reference | Crossfield et al. 2016 |
At 3.562 Earth masses, K2-58 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 | 3.570 Earth masses |
| Density | 3.920 grams per cubic centimeter |
| Radius | 1.710 Earth radiae |
| Semi-major Axis | 0.1517 AU |
| Eccentricity | NaN |
| Orbital Period | 22.883 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-09 |
| Reference | Crossfield et al. 2016 |