Star · A9V
ι Boo
ι Boo is a main-sequence star of spectral type A9V in the constellation Boötes, 96.3 light-years from the Sun.
| Other names | GJ 9474A · HIP 69713 |
|---|---|
| Constellation | Boötes |
| Distance | 96.3 light-years (29.5 pc) |
| Apparent magnitude | magnitude 4.75 |
| Absolute magnitude | magnitude 2.40 |
| Spectral type | A9V |
| Surface temperature | 7,890 K |
| Luminosity | 9.8 L☉ |
| Radius | 1.67 R☉ |
| Mass | 1.77 M☉ (estimated) |
| Right ascension (J2000) | 14h 16m 09.9s |
| Declination (J2000) | +51° 22′ 02″ |
| Space velocity (relative to the Sun) | 30.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.75). Visible from the whole Northern Hemisphere and south to latitude 39° S. North of latitude 39° 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 1930. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.7 million years.
The Sun seen from there
From a planet around ι Boo, the Sun would look like a star of magnitude 7.18, 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):
- GJ 9474B 0.41 light-years
- Xuange 9.82 light-years
- SDSS J135439.54+504451.0 9.86 light-years
- HIP 71251 10.5 light-years
- Alkaid 11.6 light-years
- 2MASS J13373116+4938367 12.1 light-years
- PSO J218.4532+50.7231 12.5 light-years
- HIP 68403 13.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.