The TOI-431 system contains 3 exoplanets. It is located 106.22 light years away from the solar system.
| Mass | 0.78 solar masses |
| Radius | 0.73 solar radiae |
| Temperature | 4850 kelvin |
| Stellar Metallicity | 0.2 decimal exponent |
| Age | - billion years |
At 3.072 Earth masses, TOI-431 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 | 3.070 Earth masses |
| Density | 8.000 grams per cubic centimeter |
| Radius | 1.280 Earth radiae |
| Semi-major Axis | 0.0113 AU |
| Eccentricity | 0 |
| Orbital Period | 0.490 days |
| Discovery Method | Transit |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2021-10 |
| Reference | Osborn et al. 2021 |
At 2.830 Earth masses, TOI-431 c 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 | 2.830 Earth masses |
| Density | 4.700 grams per cubic centimeter |
| Radius | 1.490 Earth radiae |
| Semi-major Axis | 0.052 AU |
| Eccentricity | 0 |
| Orbital Period | 4.849 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2021-10 |
| Reference | Osborn et al. 2021 |
At more than 10 Earth masses, TOI-431 d is an ice giant, a planet that is made up mostly of volatiles like water, amonia and methane, and enveloped by a dense hydrogen and helium atmosphere, much like Uranus and Neptune.
| Mass | 9.900 Earth masses |
| Density | 1.360 grams per cubic centimeter |
| Radius | 3.290 Earth radiae |
| Semi-major Axis | 0.098 AU |
| Eccentricity | 0 |
| Orbital Period | 12.461 days |
| Discovery Method | Transit |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2021-10 |
| Reference | Osborn et al. 2021 |