The HD 33142 system contains 3 exoplanets. It is located 395.87 light years away from the solar system.
| Mass | 1.52 solar masses |
| Radius | 4.17 solar radiae |
| Temperature | 5025.4 kelvin |
| Stellar Metallicity | 0.06 decimal exponent |
| Age | 2.72 billion years |
At more than 50 Earth masses, HD 33142 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 400.464 Earth masses |
| Density | 0.856 grams per cubic centimeter |
| Radius | 13.700 Earth radiae |
| Semi-major Axis | 1.074 AU |
| Eccentricity | 0.049 |
| Orbital Period | 330.000 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | W. M. Keck Observatory |
| Discovery Telescope | 10 m Keck I Telescope |
| Discovery Instrument | HIRES Spectrometer |
| Discovery Date | 2011-12 |
| Reference | Johnson et al. 2011 |
At more than 50 Earth masses, HD 33142 c is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 282.867 Earth masses |
| Density | 0.579 grams per cubic centimeter |
| Radius | 13.900 Earth radiae |
| Semi-major Axis | 1.955 AU |
| Eccentricity | 0.081 |
| Orbital Period | 810.200 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | W. M. Keck Observatory |
| Discovery Telescope | 10 m Keck I Telescope |
| Discovery Instrument | HIRES Spectrometer |
| Discovery Date | 2016-04 |
| Reference | Bryan et al. 2016 |
At more than 50 Earth masses, HD 33142 d 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 | 0.452 AU |
| Eccentricity | 0.191 |
| Orbital Period | 89.900 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Multiple Observatories |
| Discovery Telescope | Multiple Telescopes |
| Discovery Instrument | Multiple Instruments |
| Discovery Date | 2022-06 |
| Reference | Trifonov et al. 2022 |