Star · A
ω Oph
ω Oph is a main-sequence star of spectral type A in the constellation Ophiuchus, 167.7 light-years from the Sun.
| Other names | HIP 80975 |
|---|---|
| Constellation | Ophiuchus |
| Distance | 167.7 light-years (51.4 pc) |
| Apparent magnitude | magnitude 4.45 |
| Absolute magnitude | magnitude 0.89 |
| Spectral type | A |
| Surface temperature | 8,750 K |
| Luminosity | 43.1 L☉ |
| Radius | 2.86 R☉ |
| Mass | 2.66 M☉ (estimated) |
| Right ascension (J2000) | 16h 32m 08.2s |
| Declination (J2000) | −21° 27′ 59″ |
| Space velocity (relative to the Sun) | 11.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.45). Visible from the whole Southern Hemisphere and north to latitude 69° N. South of latitude 69° 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 around the year 1858. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.0 million years.
The Sun seen from there
From a planet around ω Oph, the Sun would look like a star of magnitude 8.39, in the direction where our sky has the constellation Taurus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 80587 5.56 light-years
- HIP 80109 9.95 light-years
- HIP 80784 11.4 light-years
- HIP 81181 13.8 light-years
- HIP 80570 14.9 light-years
- HIP 80889 15.5 light-years
- HIP 80083 18.4 light-years
- HIP 79203 18.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.