The Kepler-1121 system contains 1 exoplanet. It is located 1572.23 light years away from the solar system.
| Mass | 1.29 solar masses |
| Radius | 1.59 solar radiae |
| Temperature | 6231 kelvin |
| Stellar Metallicity | 0.12 decimal exponent |
| Age | 3.02 billion years |
With a mass below 5 Earth masses, a density of 3.4, and a semi-major axis of 0.1187 astronomical units, Kepler-1121 b could, potentially, be an ocean world - a planet with no dry land.
| Mass | 4.310 Earth masses |
| Density | 3.400 grams per cubic centimeter |
| Radius | 1.910 Earth radiae |
| Semi-major Axis | 0.1187 AU |
| Eccentricity | 0 |
| Orbital Period | 13.151 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-05 |
| Reference | Morton et al. 2016 |