The Kepler-305 system contains 4 exoplanets. It is located 2832.59 light years away from the solar system.
| Mass | 0.76 solar masses |
| Radius | 0.8 solar radiae |
| Temperature | 5117 kelvin |
| Stellar Metallicity | 0.03 decimal exponent |
| Age | 4.37 billion years |
At more than 10 Earth masses, Kepler-305 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 | 10.500 Earth masses |
| Density | 1.240 grams per cubic centimeter |
| Radius | 3.600 Earth radiae |
| Semi-major Axis | 0.0571 AU |
| Eccentricity | 0 |
| Orbital Period | 5.487 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 |
At more than 10 Earth masses, Kepler-305 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 | 6.000 Earth masses |
| Density | 0.917 grams per cubic centimeter |
| Radius | 3.300 Earth radiae |
| Semi-major Axis | 0.0752 AU |
| Eccentricity | 0 |
| Orbital Period | 8.291 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 |
At more than 10 Earth masses, Kepler-305 d 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 | 9.100 Earth masses |
| Density | 2.500 grams per cubic centimeter |
| Radius | 2.710 Earth radiae |
| Semi-major Axis | 0.121 AU |
| Eccentricity | 0 |
| Orbital Period | 16.739 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 3.880 Earth masses, Kepler-305 e is a so called Super Earth. Super Earths could be terrestrial worlds like Earth, but they could also be ocean worlds or terrestrial worlds wrapped in a substantial atmosphere, in which case some refer to them as Mini Neptunes.
| Mass | 3.870 Earth masses |
| Density | 3.680 grams per cubic centimeter |
| Radius | 1.794 Earth radiae |
| Semi-major Axis | 0.0399 AU |
| Eccentricity | 0 |
| Orbital Period | 3.205 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2021-07 |
| Reference | Armstrong et al. 2021 |