The K2-91 system contains 1 exoplanet. It is located 204.10 light years away from the solar system.
| Mass | 0.29 solar masses |
| Radius | 0.28 solar radiae |
| Temperature | 3622 kelvin |
| Stellar Metallicity | - decimal exponent |
| Age | - billion years |
At less than 1.5 Earth masses, K2-91 b is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 1.370 Earth masses |
| Density | 5.660 grams per cubic centimeter |
| Radius | 1.100 Earth radiae |
| Semi-major Axis | 0.0164 AU |
| Eccentricity | 0.09 |
| Orbital Period | 1.420 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-09 |
| Reference | Crossfield et al. 2016 |