Star · F0
22 Boo
22 Boo is a main-sequence star of spectral type F0 in the constellation Boötes, 312.5 light-years from the Sun.
| Other names | HIP 70602 |
|---|---|
| Constellation | Boötes |
| Distance | 312.5 light-years (95.8 pc) |
| Apparent magnitude | magnitude 5.40 |
| Absolute magnitude | magnitude 0.49 |
| Spectral type | F0 |
| Surface temperature | 7,930 K |
| Luminosity | 57 L☉ |
| Radius | 4 R☉ |
| Mass | 2.88 M☉ (estimated) |
| Right ascension (J2000) | 14h 26m 27.4s |
| Declination (J2000) | +19° 13′ 37″ |
| Space velocity (relative to the Sun) | 44.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.40). Visible from the whole Northern Hemisphere and south to latitude 71° S. North of latitude 71° 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 1714. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.5 million years.
The Sun seen from there
From a planet around 22 Boo, the Sun would look like a star of magnitude 9.74, 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 70132 7.55 light-years
- HIP 71366 14.2 light-years
- HIP 70728 17.6 light-years
- HIP 70619 18.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.