The K2-290 system contains 2 exoplanets. It is located 890.11 light years away from the solar system.
| Mass | 1.19 solar masses |
| Radius | 1.51 solar radiae |
| Temperature | 6302 kelvin |
| Stellar Metallicity | -0.06 decimal exponent |
| Age | 4 billion years |
At more than 10 Earth masses, K2-290 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 | 10.900 Earth masses |
| Density | 4.100 grams per cubic centimeter |
| Radius | 3.060 Earth radiae |
| Semi-major Axis | 0.0923 AU |
| Eccentricity | 0 |
| Orbital Period | 9.212 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2019-04 |
| Reference | Hjorth et al. 2019 |
At more than 50 Earth masses, K2-290 c is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 246.000 Earth masses |
| Density | 1.010 grams per cubic centimeter |
| Radius | 11.276 Earth radiae |
| Semi-major Axis | 0.305 AU |
| Eccentricity | 0 |
| Orbital Period | 48.367 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2019-04 |
| Reference | Hjorth et al. 2019 |