Star · M2
Gl 181
Gl 181 is a main-sequence star of spectral type M2 in the constellation Auriga, 54.2 light-years from the Sun.
| Other names | HIP 23147 |
|---|---|
| Constellation | Auriga |
| Distance | 54.2 light-years (16.6 pc) |
| Apparent magnitude | magnitude 9.80 |
| Absolute magnitude | magnitude 8.70 |
| Spectral type | M2 |
| Surface temperature | 3,930 K |
| Luminosity | 0.0881 L☉ |
| Radius | 0.641 R☉ |
| Mass | 0.545 M☉ (estimated) |
| Right ascension (J2000) | 4h 58m 50.6s |
| Declination (J2000) | +49° 50′ 58″ |
| Space velocity (relative to the Sun) | 36.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.80. Visible from the whole Northern Hemisphere and south to latitude 40° S. North of latitude 40° N it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1972. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 961 thousand years.
The Sun seen from there
From a planet around Gl 181, the Sun would look like a star of magnitude 5.93, in the direction where our sky has the constellation Ara. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- PSO J076.7092+52.6087 2.93 light-years
- Gl 165A 7.00 light-years
- GJ 1081 8.22 light-years
- GJ 3336 9.08 light-years
- Gl 184 9.46 light-years
- WISE J054047.00+483232.4 9.48 light-years
- GJ 3311 9.63 light-years
- UGPS J03553200+4743588 10.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.