Star · O7
HIP 82691
HIP 82691 is a supergiant star of spectral type O7 in the constellation Scorpius, 4,715 light-years from the Sun.
| Constellation | Scorpius |
|---|---|
| Distance | 4,715 light-years (1,446 pc) |
| Apparent magnitude | magnitude 6.07 |
| Absolute magnitude | magnitude −4.73 |
| Spectral type | O7 |
| Surface temperature | 8,780 K |
| Luminosity | 7,710 L☉ |
| Radius | 37.9 R☉ |
| Mass | 11.7 M☉ (estimated) |
| Right ascension (J2000) | 16h 54m 10.1s |
| Declination (J2000) | −41° 49′ 30″ |
| Space velocity (relative to the Sun) | 46.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.07). 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 June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 4,715 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 84 million years.
The Sun seen from there
From a planet around HIP 82691, the Sun would look like a star of magnitude 15.63, in the direction where our sky has the constellation Auriga. 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.