The HATS-31 system contains 1 exoplanet. It is located 2524.36 light years away from the solar system.
| Mass | 1.27 solar masses |
| Radius | 1.87 solar radiae |
| Temperature | 6050 kelvin |
| Stellar Metallicity | 0 decimal exponent |
| Age | 4.3 billion years |
At more than 50 Earth masses, HATS-31 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 279.690 Earth masses |
| Density | 0.243 grams per cubic centimeter |
| Radius | 18.383 Earth radiae |
| Semi-major Axis | 0.0478 AU |
| Eccentricity | 0.233 |
| Orbital Period | 3.378 days |
| Discovery Method | Transit |
| Discovery Facility | HATSouth |
| Discovery Telescope | 0.18 m Takahashi Epsilon Astrograph |
| Discovery Instrument | Apogee 4K CCD Sensor |
| Discovery Date | 2016-12 |
| Reference | de Val-Borro et al. 2016 |