The HD 20003 system contains 2 exoplanets. It is located 136.44 light years away from the solar system.
| Mass | 0.88 solar masses |
| Radius | 0.92 solar radiae |
| Temperature | 5494 kelvin |
| Stellar Metallicity | 0.04 decimal exponent |
| Age | - billion years |
At more than 10 Earth masses, HD 20003 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 | 11.660 Earth masses |
| Density | 1.590 grams per cubic centimeter |
| Radius | 3.430 Earth radiae |
| Semi-major Axis | 0.0974 AU |
| Eccentricity | 0.36 |
| Orbital Period | 11.848 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | La Silla Observatory |
| Discovery Telescope | 3.6 m ESO Telescope |
| Discovery Instrument | HARPS Spectrograph |
| Discovery Date | 2019-02 |
| Reference | Udry et al. 2019 |
At more than 10 Earth masses, HD 20003 c 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 | 14.440 Earth masses |
| Density | 1.350 grams per cubic centimeter |
| Radius | 3.890 Earth radiae |
| Semi-major Axis | 0.1964 AU |
| Eccentricity | 0.1 |
| Orbital Period | 33.924 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | La Silla Observatory |
| Discovery Telescope | 3.6 m ESO Telescope |
| Discovery Instrument | HARPS Spectrograph |
| Discovery Date | 2019-02 |
| Reference | Udry et al. 2019 |