Star · K2
Gl 171.2A
Gl 171.2A is a main-sequence star of spectral type K2 in the constellation Taurus, 56.7 light-years from the Sun.
| Other names | HIP 21482 |
|---|---|
| Constellation | Taurus |
| Distance | 56.7 light-years (17.4 pc) |
| Apparent magnitude | magnitude 8.10 |
| Absolute magnitude | magnitude 6.90 |
| Spectral type | K2 |
| Surface temperature | 4,510 K |
| Luminosity | 0.271 L☉ |
| Radius | 0.854 R☉ |
| Mass | 0.722 M☉ (estimated) |
| Right ascension (J2000) | 4h 36m 48.3s |
| Declination (J2000) | +27° 07′ 56″ |
| Space velocity (relative to the Sun) | 42.1 km/s |
In the sky
Too faint for the naked eye (magnitude 8.10); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 63° S. North of latitude 63° 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 1969. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.0 million years.
The Sun seen from there
From a planet around Gl 171.2A, the Sun would look like a star of magnitude 6.03, in the direction where our sky has the constellation Scorpius. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 171.2B 0.04 light-years
- GJ 3309 3.58 light-years
- 39 Tau 8.76 light-years
- GJ 3310 9.96 light-years
- WISE J050854.88+331920.8 10.7 light-years
- CWISE J051427.35+200447.7 11.0 light-years
- Gl 188B 11.5 light-years
- 104 Tau 11.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.