Star · K2III
87 Her
87 Her is a giant star of spectral type K2III in the constellation Hercules, 210.8 light-years from the Sun.
| Other names | HIP 87194 |
|---|---|
| Constellation | Hercules |
| Distance | 210.8 light-years (64.6 pc) |
| Apparent magnitude | magnitude 5.09 |
| Absolute magnitude | magnitude 1.04 |
| Spectral type | K2III |
| Surface temperature | 4,430 K |
| Luminosity | 63.4 L☉ |
| Radius | 13.5 R☉ |
| Mass | 2.97 M☉ (estimated) |
| Right ascension (J2000) | 17h 48m 49.1s |
| Declination (J2000) | +25° 37′ 22″ |
| Space velocity (relative to the Sun) | 28.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.09). Visible from the whole Northern Hemisphere and south to latitude 64° S. North of latitude 64° 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 1815. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.7 million years.
The Sun seen from there
From a planet around 87 Her, the Sun would look like a star of magnitude 8.88, in the direction where our sky has the constellation Lepus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 100 Her 15.9 light-years
- 100 Her 15.9 light-years
- HIP 88474 19.0 light-years
- 2MASS J17320014+2656228 19.8 light-years
- HIP 87059 19.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.