Star · B1I
HIP 80945
HIP 80945 is a supergiant star of spectral type B1I in the constellation Scorpius, 4,217 light-years from the Sun.
| Constellation | Scorpius |
|---|---|
| Distance | 4,217 light-years (1,293 pc) |
| Apparent magnitude | magnitude 5.31 |
| Absolute magnitude | magnitude −5.25 |
| Spectral type | B1I |
| Surface temperature | 7,470 K |
| Luminosity | 10,900 L☉ |
| Radius | 62.3 R☉ |
| Mass | 12.9 M☉ (estimated) |
| Right ascension (J2000) | 16h 31m 41.8s |
| Declination (J2000) | −41° 49′ 02″ |
| Space velocity (relative to the Sun) | 28.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.31). Visible from the whole Southern Hemisphere and north to latitude 48° N. South of latitude 48° S it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 4,217 years ago. At that time the first farming villages were being founded; there was no writing yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 75 million years.
The Sun seen from there
From a planet around HIP 80945, the Sun would look like a star of magnitude 15.39, in the direction where our sky has the constellation Perseus. 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.