Star · A8IV
9 Lac
9 Lac is a subgiant star of spectral type A8IV in the constellation Lacerta, 174.6 light-years from the Sun.
| Other names | HIP 111674 |
|---|---|
| Constellation | Lacerta |
| Distance | 174.6 light-years (53.5 pc) |
| Apparent magnitude | magnitude 4.64 |
| Absolute magnitude | magnitude 1.00 |
| Spectral type | A8IV |
| Surface temperature | 7,770 K |
| Luminosity | 35.3 L☉ |
| Radius | 3.28 R☉ |
| Mass | 2.52 M☉ (estimated) |
| Right ascension (J2000) | 22h 37m 22.4s |
| Declination (J2000) | +51° 32′ 42″ |
| Space velocity (relative to the Sun) | 31.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.64). Visible from the whole Northern Hemisphere and south to latitude 38° S. North of latitude 38° N it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1851. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.1 million years.
The Sun seen from there
From a planet around 9 Lac, the Sun would look like a star of magnitude 8.47, in the direction where our sky has the constellation Vela. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 112745 8.05 light-years
- β Lac 8.76 light-years
- HIP 111209 14.9 light-years
- HIP 109521 15.1 light-years
- HIP 110309 18.1 light-years
- HIP 111748 18.5 light-years
- HIP 108434 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.