Star · M1III
106 Her
106 Her is a giant star of spectral type M1III in the constellation Hercules, 390.9 light-years from the Sun.
| Other names | HIP 89861 |
|---|---|
| Constellation | Hercules |
| Distance | 390.9 light-years (119.9 pc) |
| Apparent magnitude | magnitude 4.92 |
| Absolute magnitude | magnitude −0.47 |
| Spectral type | M1III |
| Surface temperature | 3,660 K |
| Luminosity | 590 L☉ |
| Radius | 60.5 R☉ |
| Mass | 5.62 M☉ (estimated) |
| Right ascension (J2000) | 18h 20m 17.9s |
| Declination (J2000) | +21° 57′ 41″ |
| Space velocity (relative to the Sun) | 47.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.92). Visible from the whole Northern Hemisphere and south to latitude 68° S. North of latitude 68° 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 1635. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.9 million years.
The Sun seen from there
From a planet around 106 Her, the Sun would look like a star of magnitude 10.22, in the direction where our sky has the constellation Canis Major. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.