Star · K5III
θ UMi
θ UMi is a giant star of spectral type K5III in the constellation Ursa Minor, 799.5 light-years from the Sun.
| Other names | HIP 76008 |
|---|---|
| Constellation | Ursa Minor |
| Distance | 799.5 light-years (245.1 pc) |
| Apparent magnitude | magnitude 5.00 |
| Absolute magnitude | magnitude −1.95 |
| Spectral type | K5III |
| Surface temperature | 3,730 K |
| Luminosity | 2,070 L☉ |
| Radius | 109 R☉ |
| Mass | 8.05 M☉ (estimated) |
| Right ascension (J2000) | 15h 31m 24.9s |
| Declination (J2000) | +77° 20′ 58″ |
| Space velocity (relative to the Sun) | 58.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.00). Visible from the whole Northern Hemisphere and south to latitude 13° S. North of latitude 13° N it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1227. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 14 million years.
The Sun seen from there
From a planet around θ UMi, the Sun would look like a star of magnitude 11.78, in the direction where our sky has the constellation Mensa. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.