Star · A1V
47 Boo
47 Boo is a main-sequence star of spectral type A1V in the constellation Boötes, 261.2 light-years from the Sun.
| Other names | HIP 73841 |
|---|---|
| Constellation | Boötes |
| Distance | 261.2 light-years (80.1 pc) |
| Apparent magnitude | magnitude 5.59 |
| Absolute magnitude | magnitude 1.07 |
| Spectral type | A1V |
| Surface temperature | 10,190 K |
| Luminosity | 45.2 L☉ |
| Radius | 2.16 R☉ |
| Mass | 2.7 M☉ (estimated) |
| Right ascension (J2000) | 15h 05m 25.8s |
| Declination (J2000) | +48° 09′ 03″ |
| Space velocity (relative to the Sun) | 29.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.59). Visible from the whole Northern Hemisphere and south to latitude 42° S. North of latitude 42° 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 1765. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.6 million years.
The Sun seen from there
From a planet around 47 Boo, the Sun would look like a star of magnitude 9.35, in the direction where our sky has the constellation Horologium. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 73163 7.33 light-years
- HIP 73346 10.7 light-years
- HIP 72749 12.8 light-years
- HIP 72513 14.6 light-years
- HIP 74388 19.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.