Star · A9IV
β Oct
β Oct is a subgiant star of spectral type A9IV in the constellation Octans, 149.3 light-years from the Sun.
| Other names | HIP 112405 |
|---|---|
| Constellation | Octans |
| Distance | 149.3 light-years (45.8 pc) |
| Apparent magnitude | magnitude 4.13 |
| Absolute magnitude | magnitude 0.83 |
| Spectral type | A9IV |
| Surface temperature | 8,100 K |
| Luminosity | 42.6 L☉ |
| Radius | 3.31 R☉ |
| Mass | 2.65 M☉ (estimated) |
| Right ascension (J2000) | 22h 46m 03.5s |
| Declination (J2000) | −81° 22′ 54″ |
| Space velocity (relative to the Sun) | 22.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.13). Visible from the whole Southern Hemisphere and north to latitude 9° N. South of latitude 9° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1877. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.6 million years.
The Sun seen from there
From a planet around β Oct, the Sun would look like a star of magnitude 8.13, in the direction where our sky has the constellation Camelopardalis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 112049 6.03 light-years
- HIP 107665 11.5 light-years
- α Oct 16.5 light-years
- HIP 96425 18.5 light-years
- HIP 101631 18.7 light-years
- HIP 9400 19.9 light-years
- HIP 117066 20.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.