The HD 22781 system contains 1 exoplanet. It is located 106.34 light years away from the solar system.
| Mass | 0.75 solar masses |
| Radius | 0.74 solar radiae |
| Temperature | 5027 kelvin |
| Stellar Metallicity | -0.37 decimal exponent |
| Age | 4.8 billion years |
At more than 50 Earth masses, HD 22781 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 4338.200 Earth masses |
| Density | 12.800 grams per cubic centimeter |
| Radius | 12.300 Earth radiae |
| Semi-major Axis | 1.167 AU |
| Eccentricity | 0.8191 |
| Orbital Period | 528.070 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Haute-Provence Observatory |
| Discovery Telescope | 1.93 m Telescope |
| Discovery Instrument | SOPHIE Spectrograph |
| Discovery Date | 2012-02 |
| Reference | Díaz et al. 2012 |