Star · B0IV
Acrux
Acrux is a subgiant star of spectral type B0IV in the constellation Crux, 322.0 light-years from the Sun.
| Other names | α¹ Cru · HIP 60718 |
|---|---|
| Constellation | Crux |
| Distance | 322.0 light-years (98.7 pc) |
| Apparent magnitude | magnitude 0.77 |
| Absolute magnitude | magnitude −4.20 |
| Spectral type | B0IV |
| Surface temperature | 14,720 K |
| Luminosity | 12,100 L☉ |
| Radius | 16.9 R☉ |
| Mass | 13.3 M☉ (estimated) |
| Right ascension (J2000) | 12h 26m 35.9s |
| Declination (J2000) | −63° 05′ 57″ |
| Space velocity (relative to the Sun) | 21.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 0.77). Visible from the whole Southern Hemisphere and north to latitude 27° N. South of latitude 27° 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 1704. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.7 million years.
The Sun seen from there
From a planet around Acrux, the Sun would look like a star of magnitude 9.80, in the direction where our sky has the constellation Cassiopeia. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 59502 10.0 light-years
- HIP 60459 15.1 light-years
- HIP 60183 16.4 light-years
- HIP 63041 18.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.