The WASP-91 system contains 1 exoplanet. It is located 489.04 light years away from the solar system.
| Mass | 0.84 solar masses |
| Radius | 0.86 solar radiae |
| Temperature | 4920 kelvin |
| Stellar Metallicity | 0.19 decimal exponent |
| Age | - billion years |
At more than 50 Earth masses, WASP-91 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 425.892 Earth masses |
| Density | 1.590 grams per cubic centimeter |
| Radius | 11.545 Earth radiae |
| Semi-major Axis | 0.037 AU |
| Eccentricity | 0 |
| Orbital Period | 2.799 days |
| Discovery Method | Transit |
| Discovery Facility | SuperWASP-South |
| Discovery Telescope | Canon 200mm f/1.8L |
| Discovery Instrument | iKon-L CCD Camera |
| Discovery Date | 2017-08 |
| Reference | Anderson et al. 2017 |