The Kepler-55 system contains 5 exoplanets. It is located 1887.78 light years away from the solar system.
| Mass | 0.62 solar masses |
| Radius | 0.58 solar radiae |
| Temperature | 4362 kelvin |
| Stellar Metallicity | -0.01 decimal exponent |
| Age | 2.34 billion years |
At more than 10 Earth masses, Kepler-55 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 | 43.000 Earth masses |
| Density | 16.500 grams per cubic centimeter |
| Radius | 2.430 Earth radiae |
| Semi-major Axis | 0.1593 AU |
| Eccentricity | 0 |
| Orbital Period | 27.948 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2013-01 |
| Reference | Steffen et al. 2013 |
At more than 50 Earth masses, Kepler-55 c is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 69.800 Earth masses |
| Density | 35.500 grams per cubic centimeter |
| Radius | 2.210 Earth radiae |
| Semi-major Axis | 0.2095 AU |
| Eccentricity | 0 |
| Orbital Period | 42.152 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2013-01 |
| Reference | Steffen et al. 2013 |
At 3.158 Earth masses, Kepler-55 d 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 | 3.150 Earth masses |
| Density | 4.310 grams per cubic centimeter |
| Radius | 1.590 Earth radiae |
| Semi-major Axis | 0.029 AU |
| Eccentricity | 0 |
| Orbital Period | 2.211 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 3.024 Earth masses, Kepler-55 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 | 3.020 Earth masses |
| Density | 4.460 grams per cubic centimeter |
| Radius | 1.550 Earth radiae |
| Semi-major Axis | 0.048 AU |
| Eccentricity | 0 |
| Orbital Period | 4.618 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 3.158 Earth masses, Kepler-55 f 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 | 3.150 Earth masses |
| Density | 4.310 grams per cubic centimeter |
| Radius | 1.590 Earth radiae |
| Semi-major Axis | 0.081 AU |
| Eccentricity | 0 |
| Orbital Period | 10.199 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 |