The K2-99 system contains 1 exoplanet. It is located 1693.50 light years away from the solar system.
| Mass | 1.63 solar masses |
| Radius | 2.63 solar radiae |
| Temperature | 6217 kelvin |
| Stellar Metallicity | 0.21 decimal exponent |
| Age | 2.4 billion years |
At more than 50 Earth masses, K2-99 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 308.295 Earth masses |
| Density | 1.050 grams per cubic centimeter |
| Radius | 11.730 Earth radiae |
| Semi-major Axis | 0.1597 AU |
| Eccentricity | 0.19 |
| Orbital Period | 18.252 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2017-01 |
| Reference | Smith et al. 2017 |