The HD 216770 system contains 1 exoplanet. It is located 119.58 light years away from the solar system.
| Mass | 0.74 solar masses |
| Radius | 0.93 solar radiae |
| Temperature | 5399 kelvin |
| Stellar Metallicity | 0.27 decimal exponent |
| Age | 3.1 billion years |
At more than 50 Earth masses, HD 216770 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 181.163 Earth masses |
| Density | 0.355 grams per cubic centimeter |
| Radius | 14.100 Earth radiae |
| Semi-major Axis | 0.46 AU |
| Eccentricity | 0.37 |
| Orbital Period | 118.450 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | La Silla Observatory |
| Discovery Telescope | 1.2 m Leonhard Euler Telescope |
| Discovery Instrument | CORALIE Spectrograph |
| Discovery Date | 2004-02 |
| Reference | Mayor et al. 2004 |