The HD 220197 system contains 1 exoplanet. It is located 210.08 light years away from the solar system.
| Mass | 0.91 solar masses |
| Radius | 0.98 solar radiae |
| Temperature | 5683 kelvin |
| Stellar Metallicity | -0.55 decimal exponent |
| Age | 10.165 billion years |
At more than 50 Earth masses, HD 220197 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 | 2.729 AU |
| Eccentricity | 0.187 |
| Orbital Period | 1728.000 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Roque de los Muchachos Observatory |
| Discovery Telescope | 3.58 m Telescopio Nazionale Galileo |
| Discovery Instrument | HARPS-N Spectrograph |
| Discovery Date | 2019-01 |
| Reference | Barbato et al. 2019 |