Star · A3IV
ζ Boo
ζ Boo is a subgiant star of spectral type A3IV in the constellation Boötes, 175.7 light-years from the Sun.
| Other names | HIP 71795 |
|---|---|
| Constellation | Boötes |
| Distance | 175.7 light-years (53.9 pc) |
| Apparent magnitude | magnitude 3.78 |
| Absolute magnitude | magnitude 0.12 |
| Spectral type | A3IV |
| Surface temperature | 9,610 K |
| Luminosity | 99.1 L☉ |
| Radius | 3.59 R☉ |
| Mass | 3.38 M☉ (estimated) |
| Right ascension (J2000) | 14h 41m 09.0s |
| Declination (J2000) | +13° 43′ 42″ |
| Space velocity (relative to the Sun) | 19.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.78). Visible from the whole Northern Hemisphere and south to latitude 76° S. North of latitude 76° 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 1850. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.1 million years.
The Sun seen from there
From a planet around ζ Boo, the Sun would look like a star of magnitude 8.49, 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 71759 6.99 light-years
- HIP 71247 8.00 light-years
- ULAS J144555.24+125735.1 8.17 light-years
- HIP 73128 13.7 light-years
- HIP 72190 14.3 light-years
- HIP 71572 15.7 light-years
- HIP 72315 16.6 light-years
- HIP 71076 17.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.