The HD 20003 System
HD 20003 is a planetary system in the constellation Hydrus hosting 2 confirmed exoplanets, about 136 light-years from Earth.
HD 20003: Star and Habitable Zone
HD 20003
- Spectral type
- G8 V
- Surface temperature
- 5,494 K (Sun: 5,772 K)
- Mass
- 0.88 M☉
- Luminosity
- 0.7200 L☉
Habitable zone of HD 20003: 0.648–1.538 AU (conservative: 0.820–1.458 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
All 2 Planets in the HD 20003 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 20003 b | Neptune-like | 12 d | — | 0.21 | 2019 |
| HD 20003 c | Neptune-like | 34 d | — | 0.24 | 2019 |
Discovery History
The first planet found here, HD 20003 b, was discovered in 2019 using the radial velocity method.
- 2019 — HD 20003 b (Radial Velocity)
- 2019 — HD 20003 c (Radial Velocity)
Frequently Asked Questions About HD 20003
How many planets does HD 20003 have?
HD 20003 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the HD 20003 system habitable?
None of the known planets in HD 20003 orbit within the star's habitable zone.
How far away is HD 20003?
HD 20003 is about 136 light-years from Earth in the constellation Hydrus.
Explore the HD 20003 system in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
