The Kepler-307 system contains 2 exoplanets. It is located 1877.29 light years away from the solar system.
| Mass | 0.91 solar masses |
| Radius | 0.81 solar radiae |
| Temperature | 5367 kelvin |
| Stellar Metallicity | 0.19 decimal exponent |
| Age | 13.5 billion years |
At more than 10 Earth masses, Kepler-307 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 | 7.440 Earth masses |
| Density | 2.620 grams per cubic centimeter |
| Radius | 2.430 Earth radiae |
| Semi-major Axis | 0.0917 AU |
| Eccentricity | 0 |
| Orbital Period | 10.421 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-02 |
| Reference | Xie 2014 |
With a mass below 5 Earth masses, a density of 1.74, and a semi-major axis of 0.1068 astronomical units, Kepler-307 c could, potentially, be an ocean world - a planet with no dry land.
| Mass | 3.640 Earth masses |
| Density | 1.740 grams per cubic centimeter |
| Radius | 2.200 Earth radiae |
| Semi-major Axis | 0.1068 AU |
| Eccentricity | 0 |
| Orbital Period | 13.073 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-02 |
| Reference | Xie 2014 |