Star · B2IV
υ¹ Cen
υ¹ Cen is a subgiant star of spectral type B2IV in the constellation Centaurus, 427.5 light-years from the Sun.
| Other names | HIP 68282 |
|---|---|
| Constellation | Centaurus |
| Distance | 427.5 light-years (131.1 pc) |
| Apparent magnitude | magnitude 3.87 |
| Absolute magnitude | magnitude −1.72 |
| Spectral type | B2IV |
| Surface temperature | 13,780 K |
| Luminosity | 1,060 L☉ |
| Radius | 5.71 R☉ |
| Mass | 6.65 M☉ (estimated) |
| Right ascension (J2000) | 13h 58m 40.7s |
| Declination (J2000) | −44° 48′ 13″ |
| Space velocity (relative to the Sun) | 22.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.87). Visible from the whole Southern Hemisphere and north to latitude 45° N. South of latitude 45° S it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1599. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.6 million years.
The Sun seen from there
From a planet around υ¹ Cen, the Sun would look like a star of magnitude 10.42, in the direction where our sky has the constellation Andromeda. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.