Star · A5
108 Her
108 Her is a main-sequence star of spectral type A5 in the constellation Hercules, 182.0 light-years from the Sun.
| Other names | HIP 89925 |
|---|---|
| Constellation | Hercules |
| Distance | 182.0 light-years (55.8 pc) |
| Apparent magnitude | magnitude 5.61 |
| Absolute magnitude | magnitude 1.88 |
| Spectral type | A5 |
| Surface temperature | 7,930 K |
| Luminosity | 15.9 L☉ |
| Radius | 2.11 R☉ |
| Mass | 2 M☉ (estimated) |
| Right ascension (J2000) | 18h 20m 57.0s |
| Declination (J2000) | +29° 51′ 32″ |
| Space velocity (relative to the Sun) | 24.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.61). Visible from the whole Northern Hemisphere and south to latitude 60° S. North of latitude 60° N it never sets. 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 1844. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.2 million years.
The Sun seen from there
From a planet around 108 Her, the Sun would look like a star of magnitude 8.56, in the direction where our sky has the constellation Canis Major. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 90273 8.37 light-years
- SIMP J18115567+2728407 11.3 light-years
- HIP 90235 11.9 light-years
- HIP 91479 13.7 light-years
- HIP 91614 16.4 light-years
- HIP 89247 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.