The Kepler-20 system contains 6 exoplanets. It is located 921.60 light years away from the solar system.
| Mass | 0.95 solar masses |
| Radius | 0.96 solar radiae |
| Temperature | 5495 kelvin |
| Stellar Metallicity | 0.07 decimal exponent |
| Age | 7.6 billion years |
At more than 10 Earth masses, Kepler-20 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 | 9.700 Earth masses |
| Density | 8.200 grams per cubic centimeter |
| Radius | 1.868 Earth radiae |
| Semi-major Axis | 0.0463 AU |
| Eccentricity | 0.03 |
| Orbital Period | 3.696 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2012-04 |
| Reference | Gautier et al. 2012 |
At more than 10 Earth masses, Kepler-20 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 | 12.750 Earth masses |
| Density | 2.500 grams per cubic centimeter |
| Radius | 3.047 Earth radiae |
| Semi-major Axis | 0.0949 AU |
| Eccentricity | 0.16 |
| Orbital Period | 10.854 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2012-04 |
| Reference | Gautier et al. 2012 |
At more than 10 Earth masses, Kepler-20 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 | 10.070 Earth masses |
| Density | 2.700 grams per cubic centimeter |
| Radius | 2.744 Earth radiae |
| Semi-major Axis | 0.3506 AU |
| Eccentricity | 0 |
| Orbital Period | 77.611 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2012-04 |
| Reference | Gautier et al. 2012 |
| Mass | 3.080 Earth masses |
| Density | NaN grams per cubic centimeter |
| Radius | 0.865 Earth radiae |
| Semi-major Axis | 0.0639 AU |
| Eccentricity | 0 |
| Orbital Period | 6.099 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2012-02 |
| Reference | Fressin et al. 2012 |
At more than 10 Earth masses, Kepler-20 f 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 | 14.300 Earth masses |
| Density | NaN grams per cubic centimeter |
| Radius | 1.003 Earth radiae |
| Semi-major Axis | 0.1396 AU |
| Eccentricity | 0 |
| Orbital Period | 19.578 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2012-02 |
| Reference | Fressin et al. 2012 |
At more than 10 Earth masses, Kepler-20 g 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 | 19.960 Earth masses |
| Density | 1.050 grams per cubic centimeter |
| Radius | 4.710 Earth radiae |
| Semi-major Axis | 0.2055 AU |
| Eccentricity | 0.15 |
| Orbital Period | 34.940 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Multiple Observatories |
| Discovery Telescope | Multiple Telescopes |
| Discovery Instrument | Multiple Instruments |
| Discovery Date | 2016-12 |
| Reference | Buchhave et al. 2016 |