Star · M4V
WISEPC J223937.55+161716.2
WISEPC J223937.55+161716.2 is a main-sequence star of spectral type M4V in the constellation Pegasus, 76.0 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 76.0 light-years (23.3 pc) |
| Apparent magnitude | magnitude 23.68 |
| Absolute magnitude | magnitude 21.84 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.88 × 10⁻⁶ L☉ |
| Radius | 0.00638 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 22h 39m 37.2s |
| Declination (J2000) | +16° 17′ 13″ |
| Space velocity (relative to the Sun) | 50.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 23.68. Visible from the whole Northern Hemisphere and south to latitude 74° S. North of latitude 74° 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 1950. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.3 million years.
The Sun seen from there
From a planet around WISEPC J223937.55+161716.2, the Sun would look like a star of magnitude 6.67, 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):
- GJ 9798 5.36 light-years
- GJ 9784 5.86 light-years
- WISEA J221841.38+143003.4 7.12 light-years
- HIP 113829 10.3 light-years
- WISEA J221859.33+114644.4 11.3 light-years
- GJ 1271 11.5 light-years
- HIP 112496 11.7 light-years
- Gl 857.1B 12.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.