Star · A2IV
Tania Borealis
Tania Borealis is a subgiant star of spectral type A2IV in the constellation Ursa Major, 225.6 light-years from the Sun.
| Other names | λ UMa · HIP 50372 |
|---|---|
| Constellation | Ursa Major |
| Distance | 225.6 light-years (69.2 pc) |
| Apparent magnitude | magnitude 3.45 |
| Absolute magnitude | magnitude −0.75 |
| Spectral type | A2IV |
| Surface temperature | 9,780 K |
| Luminosity | 227 L☉ |
| Radius | 5.25 R☉ |
| Mass | 4.28 M☉ (estimated) |
| Right ascension (J2000) | 10h 17m 05.8s |
| Declination (J2000) | +42° 54′ 52″ |
| Space velocity (relative to the Sun) | 54.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.45). Visible from the whole Northern Hemisphere and south to latitude 47° S. North of latitude 47° N it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1800. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.0 million years.
The Sun seen from there
From a planet around Tania Borealis, the Sun would look like a star of magnitude 9.03, in the direction where our sky has the constellation Grus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 51218 11.5 light-years
- HIP 51200 11.9 light-years
- HIP 50302 12.9 light-years
- HIP 49352 13.3 light-years
- HIP 49268 14.7 light-years
- SDSS J100236.25+460420.4 17.4 light-years
- HIP 52088 19.2 light-years
- HIP 48804 19.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.