The Kepler-1209 system contains 1 exoplanet. It is located 1648.82 light years away from the solar system.
| Mass | 1.23 solar masses |
| Radius | 1.38 solar radiae |
| Temperature | 6210 kelvin |
| Stellar Metallicity | 0.12 decimal exponent |
| Age | 3.09 billion years |
At 2.891 Earth masses, Kepler-1209 b 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 | 2.890 Earth masses |
| Density | 4.610 grams per cubic centimeter |
| Radius | 1.510 Earth radiae |
| Semi-major Axis | 0.18 AU |
| Eccentricity | 0 |
| Orbital Period | 25.369 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 |