Star · F7V
22 UMa
22 UMa is a main-sequence star of spectral type F7V in the constellation Ursa Major, 161.8 light-years from the Sun.
| Other names | HIP 47013 |
|---|---|
| Constellation | Ursa Major |
| Distance | 161.8 light-years (49.6 pc) |
| Apparent magnitude | magnitude 5.77 |
| Absolute magnitude | magnitude 2.29 |
| Spectral type | F7V |
| Surface temperature | 6,260 K |
| Luminosity | 10.5 L☉ |
| Radius | 2.76 R☉ |
| Mass | 1.8 M☉ (estimated) |
| Right ascension (J2000) | 9h 34m 53.6s |
| Declination (J2000) | +72° 12′ 20″ |
| Space velocity (relative to the Sun) | 45.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.77). Visible from the whole Northern Hemisphere and south to latitude 18° S. North of latitude 18° 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 1864. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.9 million years.
The Sun seen from there
From a planet around 22 UMa, the Sun would look like a star of magnitude 8.31, in the direction where our sky has the constellation Indus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 44610 9.57 light-years
- TOI-2096 10.3 light-years
- HIP 48691 14.6 light-years
- HIP 42096 18.2 light-years
- HIP 39822 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.