Star · M3
Gl 22B
Gl 22B is a main-sequence star of spectral type M3 in the constellation Cassiopeia, 32.5 light-years from the Sun.
| Constellation | Cassiopeia |
|---|---|
| Distance | 32.5 light-years (9.96 pc) |
| Apparent magnitude | magnitude 12.40 |
| Absolute magnitude | magnitude 12.41 |
| Spectral type | M3 |
| Surface temperature | 3,850 K |
| Luminosity | 0.00316 L☉ |
| Radius | 0.126 R☉ |
| Mass | 0.155 M☉ (estimated) |
| Right ascension (J2000) | 0h 32m 27.0s |
| Declination (J2000) | +67° 14′ 06″ |
| Space velocity (relative to the Sun) | 81.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.40. Visible from the whole Northern Hemisphere and south to latitude 23° S. North of latitude 23° 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 1994. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 576 thousand years.
The Sun seen from there
From a planet around Gl 22B, the Sun would look like a star of magnitude 4.82, in the direction where our sky has the constellation Musca. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.