Star · K7V
Gl 521.2B
Gl 521.2B is a main-sequence star of spectral type K7V in the constellation Ursa Major, 83.0 light-years from the Sun.
| Constellation | Ursa Major |
|---|---|
| Distance | 83.0 light-years (25.5 pc) |
| Apparent magnitude | magnitude 10.46 |
| Absolute magnitude | magnitude 8.43 |
| Spectral type | K7V |
| Surface temperature | 4,020 K |
| Luminosity | 0.102 L☉ |
| Radius | 0.659 R☉ |
| Mass | 0.565 M☉ (estimated) |
| Right ascension (J2000) | 13h 40m 25.1s |
| Declination (J2000) | +50° 30′ 58″ |
| Space velocity (relative to the Sun) | 22.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.46. Visible from the whole Northern Hemisphere and south to latitude 39° S. North of latitude 39° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1943. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.5 million years.
The Sun seen from there
From a planet around Gl 521.2B, the Sun would look like a star of magnitude 6.86, in the direction where our sky has the constellation Phoenix. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 521.2A 0.20 light-years
- GJ 3803A 4.15 light-years
- SDSS J135439.54+504451.0 6.07 light-years
- 2MASS J13373116+4938367 7.13 light-years
- Alcor 7.35 light-years
- GJ 3797 7.43 light-years
- Mizar 7.51 light-years
- ζ UMa 7.53 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.