Star · G8V
61 UMa
61 UMa is a main-sequence star of spectral type G8V in the constellation Ursa Major, 31.2 light-years from the Sun.
| Other names | Gl 434 · HIP 56997 |
|---|---|
| Constellation | Ursa Major |
| Distance | 31.2 light-years (9.58 pc) |
| Apparent magnitude | magnitude 5.31 |
| Absolute magnitude | magnitude 5.40 |
| Spectral type | G8V |
| Surface temperature | 5,520 K |
| Luminosity | 0.677 L☉ |
| Radius | 0.898 R☉ |
| Mass | 0.907 M☉ (estimated) |
| Right ascension (J2000) | 11h 41m 03.1s |
| Declination (J2000) | +34° 12′ 07″ |
| Space velocity (relative to the Sun) | 18.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.31). Visible from the whole Northern Hemisphere and south to latitude 56° S. North of latitude 56° N it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1995. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 554 thousand years.
The Sun seen from there
From a planet around 61 UMa, the Sun would look like a star of magnitude 4.74, in the direction where our sky has the constellation Sculptor. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 451B 2.63 light-years
- Groombridge 1830 2.63 light-years
- Gl 450 2.91 light-years
- Alula Australis B 3.96 light-years
- Alula Australis 4.16 light-years
- Noquisi 4.18 light-years
- GJ 1138 5.84 light-years
- GJ 1148 6.88 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.