The Kepler-259 system contains 2 exoplanets. It is located 3268.54 light years away from the solar system.
| Mass | 0.93 solar masses |
| Radius | 0.9 solar radiae |
| Temperature | 5938 kelvin |
| Stellar Metallicity | -0.03 decimal exponent |
| Age | 0.4 billion years |
At more than 10 Earth masses, Kepler-259 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 | 8.250 Earth masses |
| Density | 2.070 grams per cubic centimeter |
| Radius | 2.800 Earth radiae |
| Semi-major Axis | 0.079 AU |
| Eccentricity | 0 |
| Orbital Period | 8.115 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-03 |
| Reference | Rowe et al. 2014 |
At more than 10 Earth masses, Kepler-259 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 | 7.750 Earth masses |
| Density | 2.160 grams per cubic centimeter |
| Radius | 2.700 Earth radiae |
| Semi-major Axis | 0.217 AU |
| Eccentricity | 0 |
| Orbital Period | 36.925 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-03 |
| Reference | Rowe et al. 2014 |