Star · M0
Gl 647
Gl 647 is a main-sequence star of spectral type M0 in the constellation Hercules, 109.5 light-years from the Sun.
| Other names | HIP 83010 |
|---|---|
| Constellation | Hercules |
| Distance | 109.5 light-years (33.6 pc) |
| Apparent magnitude | magnitude 10.66 |
| Absolute magnitude | magnitude 8.03 |
| Spectral type | M0 |
| Surface temperature | 4,030 K |
| Luminosity | 0.146 L☉ |
| Radius | 0.785 R☉ |
| Mass | 0.618 M☉ (estimated) |
| Right ascension (J2000) | 16h 57m 46.1s |
| Declination (J2000) | +13° 17′ 30″ |
| Space velocity (relative to the Sun) | 18.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.66. Visible from the whole Northern Hemisphere and south to latitude 77° S. North of latitude 77° 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 1916. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.9 million years.
The Sun seen from there
From a planet around Gl 647, the Sun would look like a star of magnitude 7.46, 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):
- PSO J255.0913+10.3263 7.65 light-years
- HIP 83435 9.99 light-years
- HIP 81730 13.9 light-years
- HIP 83221 13.9 light-years
- 2MASSI J1726000+153819 15.2 light-years
- GJ 3955 16.6 light-years
- GJ 9572 19.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.