Star · M2
Gl 171.1B
Gl 171.1B is a main-sequence star of spectral type M2 in the constellation Taurus, 69.0 light-years from the Sun.
| Constellation | Taurus |
|---|---|
| Distance | 69.0 light-years (21.2 pc) |
| Apparent magnitude | magnitude 13.50 |
| Absolute magnitude | magnitude 11.87 |
| Spectral type | M2 |
| Surface temperature | 3,890 K |
| Luminosity | 0.00499 L☉ |
| Radius | 0.156 R☉ |
| Mass | 0.189 M☉ (estimated) |
| Right ascension (J2000) | 4h 35m 55.1s |
| Declination (J2000) | +16° 30′ 38″ |
| Space velocity (relative to the Sun) | 20.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.50. Visible from the whole Northern Hemisphere and south to latitude 73° S. North of latitude 73° N it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1957. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around Gl 171.1B, the Sun would look like a star of magnitude 6.46, in the direction where our sky has the constellation Ophiuchus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Aldebaran 2.38 light-years
- GJ 3274 7.16 light-years
- GJ 3292 10.1 light-years
- GJ 3337 10.4 light-years
- PSO J062.3459+11.1794 10.5 light-years
- GJ 3255 12.0 light-years
- CWISE J043309.36+100902.3 12.5 light-years
- WISE J042417.94+072744.1 13.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.