The HD 66428 system contains 2 exoplanets. It is located 173.78 light years away from the solar system.
| Mass | 1.01 solar masses |
| Radius | 1.13 solar radiae |
| Temperature | 5716 kelvin |
| Stellar Metallicity | 0.23 decimal exponent |
| Age | 3.515 billion years |
At more than 50 Earth masses, HD 66428 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 3426.607 Earth masses |
| Density | 9.880 grams per cubic centimeter |
| Radius | 12.400 Earth radiae |
| Semi-major Axis | 3.39291 AU |
| Eccentricity | 0.470522 |
| Orbital Period | 2269.817 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | W. M. Keck Observatory |
| Discovery Telescope | 10 m Keck I Telescope |
| Discovery Instrument | HIRES Spectrometer |
| Discovery Date | 2006-07 |
| Reference | Butler et al. 2006 |
At more than 50 Earth masses, HD 66428 c is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 768.287 Earth masses |
| Density | 1.790 grams per cubic centimeter |
| Radius | 13.300 Earth radiae |
| Semi-major Axis | 9.418207 AU |
| Eccentricity | 0.207329 |
| Orbital Period | 10478.844 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Multiple Observatories |
| Discovery Telescope | Multiple Telescopes |
| Discovery Instrument | Multiple Instruments |
| Discovery Date | 2021-07 |
| Reference | Rosenthal et al. 2021 |