The HATS-40 system contains 1 exoplanet. It is located 4377.96 light years away from the solar system.
| Mass | 1.56 solar masses |
| Radius | 2.26 solar radiae |
| Temperature | 6460 kelvin |
| Stellar Metallicity | 0.01 decimal exponent |
| Age | 2.07 billion years |
At more than 50 Earth masses, HATS-40 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 505.350 Earth masses |
| Density | 0.490 grams per cubic centimeter |
| Radius | 17.710 Earth radiae |
| Semi-major Axis | 0.04997 AU |
| Eccentricity | 0.312 |
| Orbital Period | 3.264 days |
| Discovery Method | Transit |
| Discovery Facility | HATSouth |
| Discovery Telescope | 0.18 m Takahashi Epsilon Astrograph |
| Discovery Instrument | Apogee 4K CCD Sensor |
| Discovery Date | 2018-07 |
| Reference | Bento et al. 2018 |