Star · K5III
68 UMa
68 UMa is a giant star of spectral type K5III in the constellation Ursa Major, 840.3 light-years from the Sun.
| Other names | HIP 59458 |
|---|---|
| Constellation | Ursa Major |
| Distance | 840.3 light-years (257.6 pc) |
| Apparent magnitude | magnitude 6.34 |
| Absolute magnitude | magnitude −0.71 |
| Spectral type | K5III |
| Surface temperature | 3,790 K |
| Luminosity | 614 L☉ |
| Radius | 57.6 R☉ |
| Mass | 5.69 M☉ (estimated) |
| Right ascension (J2000) | 12h 11m 44.9s |
| Declination (J2000) | +57° 03′ 16″ |
| Space velocity (relative to the Sun) | 39.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.34). Visible from the whole Northern Hemisphere and south to latitude 33° S. North of latitude 33° 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 1186. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 15 million years.
The Sun seen from there
From a planet around 68 UMa, the Sun would look like a star of magnitude 11.88, in the direction where our sky has the constellation Phoenix. 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.