Star · A0V
21 Vir
21 Vir is a main-sequence star of spectral type A0V in the constellation Virgo, 279.1 light-years from the Sun.
| Other names | HIP 61318 |
|---|---|
| Constellation | Virgo |
| Distance | 279.1 light-years (85.6 pc) |
| Apparent magnitude | magnitude 5.48 |
| Absolute magnitude | magnitude 0.82 |
| Spectral type | A0V |
| Surface temperature | 10,580 K |
| Luminosity | 60.8 L☉ |
| Radius | 2.32 R☉ |
| Mass | 2.94 M☉ (estimated) |
| Right ascension (J2000) | 12h 33m 46.8s |
| Declination (J2000) | −9° 27′ 08″ |
| Space velocity (relative to the Sun) | 35.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.48). Visible from the whole Southern Hemisphere and north to latitude 81° N. 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 1747. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.0 million years.
The Sun seen from there
From a planet around 21 Vir, the Sun would look like a star of magnitude 9.49, in the direction where our sky has the constellation Pisces. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 61466 12.8 light-years
- HIP 61465 13.6 light-years
- HIP 60820 13.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.