The 91 Aqr system contains 1 exoplanet. It is located 143.61 light years away from the solar system.
| Mass | 1.4 solar masses |
| Radius | 11 solar radiae |
| Temperature | 4665 kelvin |
| Stellar Metallicity | -0.03 decimal exponent |
| Age | 3.56 billion years |
At more than 50 Earth masses, 91 Aqr b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 1017.000 Earth masses |
| Density | 2.490 grams per cubic centimeter |
| Radius | 13.100 Earth radiae |
| Semi-major Axis | 0.7 AU |
| Eccentricity | 0.027 |
| Orbital Period | 181.400 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Lick Observatory |
| Discovery Telescope | 0.6 m Coude Auxiliary Telescope |
| Discovery Instrument | Hamilton Echelle Spectrograph |
| Discovery Date | 2013-07 |
| Reference | Mitchell et al. 2013 |