Star · G8III
31 Vul
31 Vul is a giant star of spectral type G8III in the constellation Vulpecula, 221.8 light-years from the Sun.
| Other names | GJ 4168 · HIP 103004 |
|---|---|
| Constellation | Vulpecula |
| Distance | 221.8 light-years (68.0 pc) |
| Apparent magnitude | magnitude 4.56 |
| Absolute magnitude | magnitude 0.40 |
| Spectral type | G8III |
| Surface temperature | 5,180 K |
| Luminosity | 75.9 L☉ |
| Radius | 10.8 R☉ |
| Mass | 3.13 M☉ (estimated) |
| Right ascension (J2000) | 20h 52m 07.7s |
| Declination (J2000) | +27° 05′ 49″ |
| Space velocity (relative to the Sun) | 30.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.56). Visible from the whole Northern Hemisphere and south to latitude 63° S. North of latitude 63° 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 1804. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.9 million years.
The Sun seen from there
From a planet around 31 Vul, the Sun would look like a star of magnitude 8.99, in the direction where our sky has the constellation Pyxis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 102238 8.23 light-years
- 52 Cyg 17.7 light-years
- HIP 103247 19.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.