Star · G8III
φ Boo
φ Boo is a giant star of spectral type G8III in the constellation Boötes, 175.6 light-years from the Sun.
| Other names | HIP 76534 |
|---|---|
| Constellation | Boötes |
| Distance | 175.6 light-years (53.8 pc) |
| Apparent magnitude | magnitude 5.25 |
| Absolute magnitude | magnitude 1.59 |
| Spectral type | G8III |
| Surface temperature | 5,030 K |
| Luminosity | 26.7 L☉ |
| Radius | 6.79 R☉ |
| Mass | 2.32 M☉ (estimated) |
| Right ascension (J2000) | 15h 37m 49.6s |
| Declination (J2000) | +40° 21′ 12″ |
| Space velocity (relative to the Sun) | 24.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.25). Visible from the whole Northern Hemisphere and south to latitude 50° S. North of latitude 50° N it never sets. It stands highest at midnight in May, 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 φ Boo, the Sun would look like a star of magnitude 8.49, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 76452 9.26 light-years
- HIP 76156 12.0 light-years
- HIP 77141 14.2 light-years
- HIP 76398 17.9 light-years
- HIP 75595 18.4 light-years
- HIP 75093 18.5 light-years
- HIP 79186 18.9 light-years
- HIP 79234 18.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.