Star · M1
Gl 871B
Gl 871B is a main-sequence star of spectral type M1 in the constellation Grus, 78.7 light-years from the Sun.
| Constellation | Grus |
|---|---|
| Distance | 78.7 light-years (24.1 pc) |
| Apparent magnitude | magnitude 11.10 |
| Absolute magnitude | magnitude 9.19 |
| Spectral type | M1 |
| Surface temperature | 3,930 K |
| Luminosity | 0.0558 L☉ |
| Radius | 0.508 R☉ |
| Mass | 0.486 M☉ (estimated) |
| Right ascension (J2000) | 22h 42m 37.8s |
| Declination (J2000) | −47° 12′ 41″ |
| Space velocity (relative to the Sun) | 36.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.10. Visible from the whole Southern Hemisphere and north to latitude 43° N. South of latitude 43° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1947. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.4 million years.
The Sun seen from there
From a planet around Gl 871B, the Sun would look like a star of magnitude 6.74, in the direction where our sky has the constellation Ursa Major. It would be invisible 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.