Star · F7IV
σ Peg
σ Peg is a subgiant star of spectral type F7IV in the constellation Pegasus, 89.2 light-years from the Sun.
| Other names | GJ 9801A · HIP 112935 |
|---|---|
| Constellation | Pegasus |
| Distance | 89.2 light-years (27.4 pc) |
| Apparent magnitude | magnitude 5.16 |
| Absolute magnitude | magnitude 2.97 |
| Spectral type | F7IV |
| Surface temperature | 6,450 K |
| Luminosity | 5.54 L☉ |
| Radius | 1.89 R☉ |
| Mass | 1.53 M☉ (estimated) |
| Right ascension (J2000) | 22h 52m 24.1s |
| Declination (J2000) | +9° 50′ 08″ |
| Space velocity (relative to the Sun) | 68.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.16). Visible from the whole Northern Hemisphere and south to latitude 80° S. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1937. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.6 million years.
The Sun seen from there
From a planet around σ Peg, the Sun would look like a star of magnitude 7.02, in the direction where our sky has the constellation Crater. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 9801B 0.11 light-years
- ULAS J230601.02+130225.0 7.49 light-years
- GJ 4304A 10.4 light-years
- WISEA J230930.58+145633.1 10.9 light-years
- SIMP J22355244+0418563 11.4 light-years
- TOI-5961 11.7 light-years
- HIP 114378 11.8 light-years
- HIP 112496 13.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.