Star · M2III
55 Peg
55 Peg is a giant star of spectral type M2III in the constellation Pegasus, 328.8 light-years from the Sun.
| Other names | HIP 114144 |
|---|---|
| Constellation | Pegasus |
| Distance | 328.8 light-years (100.8 pc) |
| Apparent magnitude | magnitude 4.54 |
| Absolute magnitude | magnitude −0.48 |
| Spectral type | M2III |
| Surface temperature | 3,710 K |
| Luminosity | 551 L☉ |
| Radius | 56.9 R☉ |
| Mass | 5.51 M☉ (estimated) |
| Right ascension (J2000) | 23h 07m 00.3s |
| Declination (J2000) | +9° 24′ 34″ |
| Space velocity (relative to the Sun) | 8.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.54). Visible from the whole Northern Hemisphere and south to latitude 81° 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 1697. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.8 million years.
The Sun seen from there
From a planet around 55 Peg, the Sun would look like a star of magnitude 9.85, in the direction where our sky has the constellation Crater. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.