Star · A2V
χ Boo
χ Boo is a main-sequence star of spectral type A2V in the constellation Boötes, 244.0 light-years from the Sun.
| Other names | HIP 74596 |
|---|---|
| Constellation | Boötes |
| Distance | 244.0 light-years (74.8 pc) |
| Apparent magnitude | magnitude 5.28 |
| Absolute magnitude | magnitude 0.91 |
| Spectral type | A2V |
| Surface temperature | 9,410 K |
| Luminosity | 46.6 L☉ |
| Radius | 2.57 R☉ |
| Mass | 2.72 M☉ (estimated) |
| Right ascension (J2000) | 15h 14m 29.2s |
| Declination (J2000) | +29° 09′ 51″ |
| Space velocity (relative to the Sun) | 31.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.28). Visible from the whole Northern Hemisphere and south to latitude 61° S. North of latitude 61° 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 1782. 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 χ Boo, the Sun would look like a star of magnitude 9.20, in the direction where our sky has the constellation Fornax. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 74442 13.6 light-years
- HIP 74439 13.7 light-years
- HIP 75283 15.3 light-years
- HIP 74773 16.3 light-years
- HIP 73438 16.6 light-years
- HIP 76186 18.1 light-years
- 2MASS J15163838+3333576 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.