The HD 218566 system contains 1 exoplanet. It is located 94.02 light years away from the solar system.
| Mass | 0.76 solar masses |
| Radius | 0.85 solar radiae |
| Temperature | 4730 kelvin |
| Stellar Metallicity | 0.28 decimal exponent |
| Age | 8.5 billion years |
At more than 50 Earth masses, HD 218566 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 63.566 Earth masses |
| Density | 0.431 grams per cubic centimeter |
| Radius | 9.320 Earth radiae |
| Semi-major Axis | 0.69 AU |
| Eccentricity | 0.3 |
| Orbital Period | 225.700 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | W. M. Keck Observatory |
| Discovery Telescope | 10 m Keck I Telescope |
| Discovery Instrument | HIRES Spectrometer |
| Discovery Date | 2011-02 |
| Reference | Meschiari et al. 2011 |