Star · K1 V
HD 101930
HD 101930 is a main-sequence star of spectral type K1 V in the constellation Centaurus, 97.7 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | GJ 3683 · HIP 57172 |
|---|---|
| Constellation | Centaurus |
| Distance | 97.7 light-years (30.0 pc) |
| Apparent magnitude | magnitude 8.21 |
| Absolute magnitude | magnitude 5.83 |
| Spectral type | K1 V |
| Surface temperature | 5,110 K |
| Luminosity | 0.49 L☉ |
| Radius | 0.86 R☉ |
| Mass | 0.57 M☉ |
| Age | 1.0 billion years |
| Metallicity [Fe/H] | 0.15 |
| Right ascension (J2000) | 11h 43m 30.1s |
| Declination (J2000) | −58° 00′ 25″ |
| Space velocity (relative to the Sun) | 52.8 km/s |
In the sky
Too faint for the naked eye (magnitude 8.21); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 32° N. South of latitude 32° S it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1928. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.7 million years.
The Sun seen from there
From a planet around HD 101930, the Sun would look like a star of magnitude 7.21, in the direction where our sky has the constellation Cassiopeia. It would be invisible to the naked eye.
Planets
- HD 101930 b 70.5-day orbit · 10.6 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 452.5B 5.52 light-years
- Gl 452.5A 6.51 light-years
- Gl 404.1 11.2 light-years
- GJ 3663 12.5 light-years
- Gacrux 13.9 light-years
- HIP 62333 15.5 light-years
- DENIS-P J1157480-484442 16.4 light-years
- DENIS-P J1048278-525418 17.2 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.