The Kepler-639 system contains 1 exoplanet. It is located 2773.12 light years away from the solar system.
| Mass | 1.14 solar masses |
| Radius | 1.29 solar radiae |
| Temperature | 5896 kelvin |
| Stellar Metallicity | 0.23 decimal exponent |
| Age | 4.37 billion years |
At more than 10 Earth masses, Kepler-639 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 | 6.260 Earth masses |
| Density | 2.550 grams per cubic centimeter |
| Radius | 2.380 Earth radiae |
| Semi-major Axis | 0.0966 AU |
| Eccentricity | 0 |
| Orbital Period | 10.214 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-05 |
| Reference | Morton et al. 2016 |