Star · A3
υ Oph
υ Oph is a main-sequence star of spectral type A3 in the constellation Ophiuchus, 130.0 light-years from the Sun.
| Other names | HIP 80628 |
|---|---|
| Constellation | Ophiuchus |
| Distance | 130.0 light-years (39.9 pc) |
| Apparent magnitude | magnitude 4.62 |
| Absolute magnitude | magnitude 1.62 |
| Spectral type | A3 |
| Surface temperature | 8,280 K |
| Luminosity | 21 L☉ |
| Radius | 2.22 R☉ |
| Mass | 2.17 M☉ (estimated) |
| Right ascension (J2000) | 16h 27m 48.2s |
| Declination (J2000) | −8° 22′ 18″ |
| Space velocity (relative to the Sun) | 38.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.62). Visible from the whole Southern Hemisphere and north to latitude 82° N. 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 1896. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.3 million years.
The Sun seen from there
From a planet around υ Oph, the Sun would look like a star of magnitude 7.83, 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):
- WISE J162359.70-050811.4 9.35 light-years
- HIP 81465 9.88 light-years
- HIP 78983 11.5 light-years
- HIP 78883 13.5 light-years
- HIP 81580 13.6 light-years
- HIP 80315 14.0 light-years
- ψ Sco 17.4 light-years
- SDSSp J163600.79-003452.6 18.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.