The K2-199 system contains 2 exoplanets. It is located 350.68 light years away from the solar system.
| Mass | 0.71 solar masses |
| Radius | 0.68 solar radiae |
| Temperature | 4491 kelvin |
| Stellar Metallicity | -0.01 decimal exponent |
| Age | 5.04 billion years |
At more than 10 Earth masses, K2-199 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 | 6.900 Earth masses |
| Density | 7.200 grams per cubic centimeter |
| Radius | 1.730 Earth radiae |
| Semi-major Axis | 0.0382 AU |
| Eccentricity | 0.02 |
| Orbital Period | 3.225 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 |
At more than 10 Earth masses, K2-199 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 | 12.400 Earth masses |
| Density | 2.900 grams per cubic centimeter |
| Radius | 2.850 Earth radiae |
| Semi-major Axis | 0.0662 AU |
| Eccentricity | 0.03 |
| Orbital Period | 7.374 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 |