Star · K0III
ξ Her
ξ Her is a giant star of spectral type K0III in the constellation Hercules, 136.7 light-years from the Sun.
| Other names | HIP 87933 |
|---|---|
| Constellation | Hercules |
| Distance | 136.7 light-years (41.9 pc) |
| Apparent magnitude | magnitude 3.70 |
| Absolute magnitude | magnitude 0.59 |
| Spectral type | K0III |
| Surface temperature | 4,900 K |
| Luminosity | 71.6 L☉ |
| Radius | 11.7 R☉ |
| Mass | 3.08 M☉ (estimated) |
| Right ascension (J2000) | 17h 57m 45.9s |
| Declination (J2000) | +29° 14′ 52″ |
| Space velocity (relative to the Sun) | 16.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.70). Visible from the whole Northern Hemisphere and south to latitude 61° S. North of latitude 61° 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 1889. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.4 million years.
The Sun seen from there
From a planet around ξ Her, the Sun would look like a star of magnitude 7.94, in the direction where our sky has the constellation Columba. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 86950 8.93 light-years
- HIP 89408 9.38 light-years
- HIP 86521 11.9 light-years
- 84 Her 15.9 light-years
- HIP 89100 17.4 light-years
- HIP 90190 18.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.