Star · G8 V
HD 20003
HD 20003 is a main-sequence star of spectral type G8 V in the constellation Hydrus, 137.3 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Other names | HIP 14530 |
|---|---|
| Constellation | Hydrus |
| Distance | 137.3 light-years (42.1 pc) |
| Apparent magnitude | magnitude 8.39 |
| Absolute magnitude | magnitude 5.27 |
| Spectral type | G8 V |
| Surface temperature | 5,490 K |
| Luminosity | 0.72 L☉ |
| Radius | 0.922 R☉ |
| Mass | 0.875 M☉ |
| Metallicity [Fe/H] | 0.04 |
| Right ascension (J2000) | 3h 07m 38.0s |
| Declination (J2000) | −72° 19′ 19″ |
| Space velocity (relative to the Sun) | 21.7 km/s |
In the sky
Too faint for the naked eye (magnitude 8.39); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 18° N. South of latitude 18° S it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1889. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.4 million years.
The Sun seen from there
From a planet around HD 20003, the Sun would look like a star of magnitude 7.95, in the direction where our sky has the constellation Ursa Minor. It would be invisible to the naked eye.
Planets
- HD 20003 b 11.8-day orbit · 3.43 R⊕
- HD 20003 c 33.9-day orbit · 3.89 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASS J03032042-7312300 6.62 light-years
- HIP 15968 11.2 light-years
- HIP 10874 12.2 light-years
- HIP 11476 12.3 light-years
- HIP 14739 12.4 light-years
- δ Hyi 13.1 light-years
- HIP 10842 17.4 light-years
- 2MASS J03421621-6817321 17.5 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.