The Kepler-273 system contains 2 exoplanets. It is located 2328.64 light years away from the solar system.
| Mass | 0.94 solar masses |
| Radius | 0.81 solar radiae |
| Temperature | 5626 kelvin |
| Stellar Metallicity | 0.14 decimal exponent |
| Age | 5.1 billion years |
At 2.859 Earth masses, Kepler-273 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 | 2.860 Earth masses |
| Density | 4.660 grams per cubic centimeter |
| Radius | 1.500 Earth radiae |
| Semi-major Axis | 0.037 AU |
| Eccentricity | 0 |
| Orbital Period | 2.937 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 |
With a mass below 5 Earth masses, a density of 3.24, and a semi-major axis of 0.073 astronomical units, Kepler-273 c could, potentially, be an ocean world - a planet with no dry land.
| Mass | 4.580 Earth masses |
| Density | 3.240 grams per cubic centimeter |
| Radius | 1.980 Earth radiae |
| Semi-major Axis | 0.073 AU |
| Eccentricity | 0 |
| Orbital Period | 8.015 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 |