Star · F2II
59 UMa
59 UMa is a bright giant star of spectral type F2II in the constellation Ursa Major, 158.4 light-years from the Sun.
| Other names | HIP 56770 |
|---|---|
| Constellation | Ursa Major |
| Distance | 158.4 light-years (48.5 pc) |
| Apparent magnitude | magnitude 5.56 |
| Absolute magnitude | magnitude 2.13 |
| Spectral type | F2II |
| Surface temperature | 7,170 K |
| Luminosity | 12 L☉ |
| Radius | 2.25 R☉ |
| Mass | 1.86 M☉ (estimated) |
| Right ascension (J2000) | 11h 38m 20.6s |
| Declination (J2000) | +43° 37′ 32″ |
| Space velocity (relative to the Sun) | 34.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.56). Visible from the whole Northern Hemisphere and south to latitude 46° S. North of latitude 46° 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 1868. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.8 million years.
The Sun seen from there
From a planet around 59 UMa, the Sun would look like a star of magnitude 8.26, 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):
- 58 UMa 10.8 light-years
- HIP 56145 11.0 light-years
- SDSS J111741.17+450947.0 11.1 light-years
- HIP 57349 14.8 light-years
- HIP 58287 15.5 light-years
- HIP 54692 15.7 light-years
- HIP 54681 15.9 light-years
- SDSS J112912.12+380612.2 16.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.