Star · B8
HIP 90509
HIP 90509 is a main-sequence star of spectral type B8 in the constellation Octans, 759.4 light-years from the Sun.
| Constellation | Octans |
|---|---|
| Distance | 759.4 light-years (232.8 pc) |
| Apparent magnitude | magnitude 6.49 |
| Absolute magnitude | magnitude −0.35 |
| Spectral type | B8 |
| Surface temperature | 10,580 K |
| Luminosity | 178 L☉ |
| Radius | 3.96 R☉ |
| Mass | 3.99 M☉ (estimated) |
| Right ascension (J2000) | 18h 28m 06.4s |
| Declination (J2000) | −84° 23′ 14″ |
| Space velocity (relative to the Sun) | 19.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.49). Visible from the whole Southern Hemisphere and north to latitude 6° N. South of latitude 6° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1267. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 13 million years.
The Sun seen from there
From a planet around HIP 90509, the Sun would look like a star of magnitude 11.67, in the direction where our sky has the constellation Camelopardalis. 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.