Star · F9IV
12 Boo
12 Boo is a subgiant star of spectral type F9IV in the constellation Boötes, 118.7 light-years from the Sun.
| Other names | GJ 9470 · HIP 69226 |
|---|---|
| Constellation | Boötes |
| Distance | 118.7 light-years (36.4 pc) |
| Apparent magnitude | magnitude 4.82 |
| Absolute magnitude | magnitude 2.02 |
| Spectral type | F9IV |
| Surface temperature | 6,210 K |
| Luminosity | 13.7 L☉ |
| Radius | 3.19 R☉ |
| Mass | 1.92 M☉ (estimated) |
| Right ascension (J2000) | 14h 10m 23.9s |
| Declination (J2000) | +25° 05′ 30″ |
| Space velocity (relative to the Sun) | 15.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.82). Visible from the whole Northern Hemisphere and south to latitude 65° S. North of latitude 65° 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 1907. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.1 million years.
The Sun seen from there
From a planet around 12 Boo, the Sun would look like a star of magnitude 7.63, 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 70310 8.98 light-years
- HIP 68160 9.75 light-years
- SIMP J14111847+2948515 9.82 light-years
- HIP 69345 10.0 light-years
- ULAS J134926.40+234045.9 11.1 light-years
- PSO J207.7496+29.4240 12.7 light-years
- HIP 67594 13.4 light-years
- SDSS J140604.28+313115.6 14.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.