Star · F2III
13 Peg
13 Peg is a giant star of spectral type F2III in the constellation Pegasus, 104.2 light-years from the Sun.
| Other names | HIP 107788 |
|---|---|
| Constellation | Pegasus |
| Distance | 104.2 light-years (31.9 pc) |
| Apparent magnitude | magnitude 5.34 |
| Absolute magnitude | magnitude 2.82 |
| Spectral type | F2III |
| Surface temperature | 6,910 K |
| Luminosity | 6.33 L☉ |
| Radius | 1.75 R☉ |
| Mass | 1.59 M☉ (estimated) |
| Right ascension (J2000) | 21h 50m 08.7s |
| Declination (J2000) | +17° 17′ 09″ |
| Space velocity (relative to the Sun) | 16.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.34). Visible from the whole Northern Hemisphere and south to latitude 73° S. North of latitude 73° 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 1922. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.8 million years.
The Sun seen from there
From a planet around 13 Peg, the Sun would look like a star of magnitude 7.35, in the direction where our sky has the constellation Hydra. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 108947 8.77 light-years
- HIP 105918 11.0 light-years
- HIP 107062 11.6 light-years
- 2MASS J21395208+2148397 12.4 light-years
- SIMP J21483578+2239427 13.6 light-years
- HIP 109461 14.2 light-years
- PSO J321.1619+18.8243 14.5 light-years
- HIP 110035 14.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.