The K2-117 system contains 2 exoplanets. It is located 331.48 light years away from the solar system.
| Mass | 0.54 solar masses |
| Radius | 0.51 solar radiae |
| Temperature | 3778 kelvin |
| Stellar Metallicity | -0.05 decimal exponent |
| Age | - billion years |
With a mass below 5 Earth masses, a density of 3.14, and a semi-major axis of 0.0189 astronomical units, K2-117 b could, potentially, be an ocean world - a planet with no dry land.
| Mass | 4.780 Earth masses |
| Density | 3.140 grams per cubic centimeter |
| Radius | 2.030 Earth radiae |
| Semi-major Axis | 0.0189 AU |
| Eccentricity | 0.06 |
| Orbital Period | 1.292 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2017-11 |
| Reference | Dressing et al. 2017 |
With a mass below 5 Earth masses, a density of 3.08, and a semi-major axis of 0.0492 astronomical units, K2-117 c could, potentially, be an ocean world - a planet with no dry land.
| Mass | 4.900 Earth masses |
| Density | 3.080 grams per cubic centimeter |
| Radius | 2.060 Earth radiae |
| Semi-major Axis | 0.0492 AU |
| Eccentricity | 0.15 |
| Orbital Period | 5.444 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2017-11 |
| Reference | Dressing et al. 2017 |