The HATS-51 system contains 1 exoplanet. It is located 1270.61 light years away from the solar system.
| Mass | 1.19 solar masses |
| Radius | 1.44 solar radiae |
| Temperature | 5758 kelvin |
| Stellar Metallicity | - decimal exponent |
| Age | 4.74 billion years |
At more than 50 Earth masses, HATS-51 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 244.093 Earth masses |
| Density | 0.340 grams per cubic centimeter |
| Radius | 15.805 Earth radiae |
| Semi-major Axis | 0.04639 AU |
| Eccentricity | 0.33 |
| Orbital Period | 3.349 days |
| Discovery Method | Transit |
| Discovery Facility | HATSouth |
| Discovery Telescope | 0.18 m Takahashi Epsilon Astrograph |
| Discovery Instrument | Apogee 4K CCD Sensor |
| Discovery Date | 2018-02 |
| Reference | Henning et al. 2018 |