The HATS-66 system contains 1 exoplanet. It is located 4820.52 light years away from the solar system.
| Mass | 1.41 solar masses |
| Radius | 1.84 solar radiae |
| Temperature | 6626 kelvin |
| Stellar Metallicity | -0.017 decimal exponent |
| Age | 2.17 billion years |
At more than 50 Earth masses, HATS-66 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 1694.034 Earth masses |
| Density | 2.340 grams per cubic centimeter |
| Radius | 15.816 Earth radiae |
| Semi-major Axis | 0.04714 AU |
| Eccentricity | 0.064 |
| Orbital Period | 3.141 days |
| Discovery Method | Transit |
| Discovery Facility | HATSouth |
| Discovery Telescope | 0.18 m Takahashi Epsilon Astrograph |
| Discovery Instrument | Apogee 4K CCD Sensor |
| Discovery Date | 2019-02 |
| Reference | Hartman et al. 2019 |