The WASP-81 system contains 1 exoplanet. It is located 1299.75 light years away from the solar system.
| Mass | 1.08 solar masses |
| Radius | 1.28 solar radiae |
| Temperature | 5870 kelvin |
| Stellar Metallicity | -0.36 decimal exponent |
| Age | - billion years |
At more than 50 Earth masses, WASP-81 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 231.698 Earth masses |
| Density | 0.332 grams per cubic centimeter |
| Radius | 16.018 Earth radiae |
| Semi-major Axis | 0.03908 AU |
| Eccentricity | 0.066 |
| Orbital Period | 2.716 days |
| Discovery Method | Transit |
| Discovery Facility | Multiple Facilities |
| Discovery Telescope | Multiple Telescopes |
| Discovery Instrument | Multiple Instruments |
| Discovery Date | 2017-05 |
| Reference | Triaud et al. 2017 |