Star · A5
74 UMa
74 UMa is a main-sequence star of spectral type A5 in the constellation Ursa Major, 276.4 light-years from the Sun.
| Other names | HIP 60978 |
|---|---|
| Constellation | Ursa Major |
| Distance | 276.4 light-years (84.8 pc) |
| Apparent magnitude | magnitude 5.37 |
| Absolute magnitude | magnitude 0.73 |
| Spectral type | A5 |
| Surface temperature | 8,120 K |
| Luminosity | 46.7 L☉ |
| Radius | 3.45 R☉ |
| Mass | 2.72 M☉ (estimated) |
| Right ascension (J2000) | 12h 29m 57.3s |
| Declination (J2000) | +58° 24′ 21″ |
| Space velocity (relative to the Sun) | 44.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.37). Visible from the whole Northern Hemisphere and south to latitude 32° S. North of latitude 32° 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 1750. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.9 million years.
The Sun seen from there
From a planet around 74 UMa, the Sun would look like a star of magnitude 9.47, in the direction where our sky has the constellation Tucana. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 61837 8.34 light-years
- HIP 59061 16.5 light-years
- HIP 61693 19.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.