The HD 221420 system contains 1 exoplanet. It is located 101.57 light years away from the solar system.
| Mass | 1.06 solar masses |
| Radius | 1.95 solar radiae |
| Temperature | 5847 kelvin |
| Stellar Metallicity | 0.33 decimal exponent |
| Age | 3.65 billion years |
At more than 50 Earth masses, HD 221420 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 6363.402 Earth masses |
| Density | 19.700 grams per cubic centimeter |
| Radius | 12.100 Earth radiae |
| Semi-major Axis | 8.416586 AU |
| Eccentricity | 0.082013 |
| Orbital Period | 8615.415 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Anglo-Australian Telescope |
| Discovery Telescope | 3.9 m Anglo-Australian Telescope |
| Discovery Instrument | UCLES Spectrograph |
| Discovery Date | 2019-06 |
| Reference | Kane et al. 2019 |