Star · M3
HIP 117986
HIP 117986 is a supergiant star of spectral type M3 in the constellation Pegasus, 820.6 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 820.6 light-years (251.6 pc) |
| Apparent magnitude | magnitude 6.45 |
| Absolute magnitude | magnitude −0.55 |
| Spectral type | M3 |
| Surface temperature | 3,710 K |
| Luminosity | 592 L☉ |
| Radius | 59 R☉ |
| Mass | 5.63 M☉ (estimated) |
| Right ascension (J2000) | 23h 55m 54.7s |
| Declination (J2000) | +15° 13′ 49″ |
| Space velocity (relative to the Sun) | 96.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.45). Visible from the whole Northern Hemisphere and south to latitude 75° S. North of latitude 75° 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 1205. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 15 million years.
The Sun seen from there
From a planet around HIP 117986, the Sun would look like a star of magnitude 11.83, 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.