The HD 20329 system contains 1 exoplanet. It is located 207.69 light years away from the solar system.
| Mass | 0.9 solar masses |
| Radius | 1.13 solar radiae |
| Temperature | 5596 kelvin |
| Stellar Metallicity | -0.07 decimal exponent |
| Age | 11 billion years |
At more than 10 Earth masses, HD 20329 b is an ice giant, a planet that is made up mostly of volatiles like water, amonia and methane, and enveloped by a dense hydrogen and helium atmosphere, much like Uranus and Neptune.
| Mass | 7.420 Earth masses |
| Density | 8.060 grams per cubic centimeter |
| Radius | 1.720 Earth radiae |
| Semi-major Axis | 0.018 AU |
| Eccentricity | 0 |
| Orbital Period | 0.926 days |
| Discovery Method | Transit |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2022-11 |
| Reference | Murgas et al. 2022 |