Star · K5III
υ Boo
υ Boo is a giant star of spectral type K5III in the constellation Boötes, 243.0 light-years from the Sun.
| Other names | HIP 67459 |
|---|---|
| Constellation | Boötes |
| Distance | 243.0 light-years (74.5 pc) |
| Apparent magnitude | magnitude 4.05 |
| Absolute magnitude | magnitude −0.31 |
| Spectral type | K5III |
| Surface temperature | 3,760 K |
| Luminosity | 436 L☉ |
| Radius | 49.1 R☉ |
| Mass | 5.16 M☉ (estimated) |
| Right ascension (J2000) | 13h 49m 28.6s |
| Declination (J2000) | +15° 47′ 53″ |
| Space velocity (relative to the Sun) | 36.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.05). Visible from the whole Northern Hemisphere and south to latitude 74° S. North of latitude 74° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1783. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.3 million years.
The Sun seen from there
From a planet around υ Boo, the Sun would look like a star of magnitude 9.19, in the direction where our sky has the constellation Cetus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 67685 12.7 light-years
- HIP 66740 15.0 light-years
- SIMP J13391950+1523440 18.4 light-years
- HIP 66522 18.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.