Star · M3
Gl 791
Gl 791 is a main-sequence star of spectral type M3 in the constellation Microscopium, 46.6 light-years from the Sun.
| Other names | HIP 100923 |
|---|---|
| Constellation | Microscopium |
| Distance | 46.6 light-years (14.3 pc) |
| Apparent magnitude | magnitude 11.41 |
| Absolute magnitude | magnitude 10.63 |
| Spectral type | M3 |
| Surface temperature | 3,790 K |
| Luminosity | 0.0177 L☉ |
| Radius | 0.309 R☉ |
| Mass | 0.328 M☉ (estimated) |
| Right ascension (J2000) | 20h 27m 41.6s |
| Declination (J2000) | −27° 44′ 52″ |
| Space velocity (relative to the Sun) | 60.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.41. Visible from the whole Southern Hemisphere and north to latitude 62° N. South of latitude 62° S it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1979. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 827 thousand years.
The Sun seen from there
From a planet around Gl 791, the Sun would look like a star of magnitude 5.61, in the direction where our sky has the constellation Cancer. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.