Star · K0III
13 Lac
13 Lac is a giant star of spectral type K0III in the constellation Lacerta, 283.0 light-years from the Sun.
| Other names | HIP 112242 |
|---|---|
| Constellation | Lacerta |
| Distance | 283.0 light-years (86.8 pc) |
| Apparent magnitude | magnitude 5.11 |
| Absolute magnitude | magnitude 0.42 |
| Spectral type | K0III |
| Surface temperature | 4,840 K |
| Luminosity | 86.4 L☉ |
| Radius | 13.2 R☉ |
| Mass | 3.25 M☉ (estimated) |
| Right ascension (J2000) | 22h 44m 05.5s |
| Declination (J2000) | +41° 49′ 09″ |
| Space velocity (relative to the Sun) | 13.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.11). Visible from the whole Northern Hemisphere and south to latitude 48° S. North of latitude 48° 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 1743. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.0 million years.
The Sun seen from there
From a planet around 13 Lac, the Sun would look like a star of magnitude 9.52, 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 112552 11.4 light-years
- HIP 110851 15.7 light-years
- HIP 111866 15.7 light-years
- HIP 112722 17.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.