Star · K0III
73 Peg
73 Peg is a giant star of spectral type K0III in the constellation Pegasus, 308.9 light-years from the Sun.
| Other names | HIP 116355 |
|---|---|
| Constellation | Pegasus |
| Distance | 308.9 light-years (94.7 pc) |
| Apparent magnitude | magnitude 5.63 |
| Absolute magnitude | magnitude 0.75 |
| Spectral type | K0III |
| Surface temperature | 4,640 K |
| Luminosity | 71.4 L☉ |
| Radius | 13 R☉ |
| Mass | 3.07 M☉ (estimated) |
| Right ascension (J2000) | 23h 34m 38.2s |
| Declination (J2000) | +33° 29′ 50″ |
| Space velocity (relative to the Sun) | 10.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.63). Visible from the whole Northern Hemisphere and south to latitude 57° S. North of latitude 57° N it never sets. 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 1717. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.5 million years.
The Sun seen from there
From a planet around 73 Peg, the Sun would look like a star of magnitude 9.71, 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 117386 16.9 light-years
- HIP 115306 19.0 light-years
- HIP 117094 19.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.