Star · M4V
WISE J220905.73+271143.9
WISE J220905.73+271143.9 is a main-sequence star of spectral type M4V in the constellation Pegasus, 20.2 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 20.2 light-years (6.18 pc) |
| Apparent magnitude | magnitude 30.36 |
| Absolute magnitude | magnitude 31.41 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 4.31 × 10⁻¹⁰ L☉ |
| Radius | 7.81 × 10⁻⁵ R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 22h 09m 04.7s |
| Declination (J2000) | +27° 11′ 59″ |
| Space velocity (relative to the Sun) | 53.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 30.36. 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 2006. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 358 thousand years.
The Sun seen from there
From a planet around WISE J220905.73+271143.9, the Sun would look like a star of magnitude 3.78, in the direction where our sky has the constellation Antlia. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 829 5.23 light-years
- Gl 880 6.09 light-years
- Gl 873 6.98 light-years
- Gl 896B 7.14 light-years
- GJ 896 A 7.15 light-years
- WISEPC J205628.90+145953.3 7.95 light-years
- 2MASS J21481628+4003593 8.26 light-years
- GJ 4247 9.57 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.