Star · A1IV
61 Oph
61 Oph is a subgiant star of spectral type A1IV in the constellation Ophiuchus, 315.8 light-years from the Sun.
| Other names | HIP 86831 |
|---|---|
| Constellation | Ophiuchus |
| Distance | 315.8 light-years (96.8 pc) |
| Apparent magnitude | magnitude 6.16 |
| Absolute magnitude | magnitude 1.23 |
| Spectral type | A1IV |
| Surface temperature | 8,740 K |
| Luminosity | 31.6 L☉ |
| Radius | 2.45 R☉ |
| Mass | 2.44 M☉ (estimated) |
| Right ascension (J2000) | 17h 44m 34.1s |
| Declination (J2000) | +2° 34′ 46″ |
| Space velocity (relative to the Sun) | 32.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.16). Visible from the whole Northern Hemisphere and south to latitude 87° S. 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 around the year 1710. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.6 million years.
The Sun seen from there
From a planet around 61 Oph, the Sun would look like a star of magnitude 9.76, in the direction where our sky has the constellation Orion. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 87247 12.1 light-years
- HIP 86910 14.0 light-years
- HIP 86443 17.1 light-years
- HIP 87048 17.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.