The Kepler-278 system contains 2 exoplanets. It is located 1444.97 light years away from the solar system.
| Mass | 1.08 solar masses |
| Radius | 2.94 solar radiae |
| Temperature | 4991 kelvin |
| Stellar Metallicity | 0.271 decimal exponent |
| Age | 7.76 billion years |
At more than 10 Earth masses, Kepler-278 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 | 15.600 Earth masses |
| Density | 1.270 grams per cubic centimeter |
| Radius | 4.070 Earth radiae |
| Semi-major Axis | 0.207 AU |
| Eccentricity | 0.04 |
| Orbital Period | 30.161 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-278 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 | 12.600 Earth masses |
| Density | 1.500 grams per cubic centimeter |
| Radius | 3.590 Earth radiae |
| Semi-major Axis | 0.294 AU |
| Eccentricity | 0.51 |
| Orbital Period | 51.079 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 |