Star · K3III
16 Her
16 Her is a giant star of spectral type K3III in the constellation Hercules, 304.5 light-years from the Sun.
| Other names | HIP 79666 |
|---|---|
| Constellation | Hercules |
| Distance | 304.5 light-years (93.4 pc) |
| Apparent magnitude | magnitude 5.72 |
| Absolute magnitude | magnitude 0.87 |
| Spectral type | K3III |
| Surface temperature | 4,460 K |
| Luminosity | 72.3 L☉ |
| Radius | 14.3 R☉ |
| Mass | 3.09 M☉ (estimated) |
| Right ascension (J2000) | 16h 15m 28.6s |
| Declination (J2000) | +18° 48′ 29″ |
| Space velocity (relative to the Sun) | 52.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.72). Visible from the whole Northern Hemisphere and south to latitude 71° S. North of latitude 71° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1722. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.4 million years.
The Sun seen from there
From a planet around 16 Her, the Sun would look like a star of magnitude 9.68, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 79472 15.1 light-years
- HIP 79885 19.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.