Star · M3
GJ 4338B
GJ 4338B is a main-sequence star of spectral type M3 in the constellation Andromeda, 48.3 light-years from the Sun.
| Constellation | Andromeda |
|---|---|
| Distance | 48.3 light-years (14.8 pc) |
| Apparent magnitude | magnitude 12.44 |
| Absolute magnitude | magnitude 11.59 |
| Spectral type | M3 |
| Surface temperature | 3,640 K |
| Luminosity | 0.00915 L☉ |
| Radius | 0.241 R☉ |
| Mass | 0.246 M☉ (estimated) |
| Right ascension (J2000) | 23h 29m 21.6s |
| Declination (J2000) | +41° 28′ 12″ |
| Space velocity (relative to the Sun) | 28.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.44. Visible from the whole Northern Hemisphere and south to latitude 49° S. North of latitude 49° 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 1978. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 857 thousand years.
The Sun seen from there
From a planet around GJ 4338B, the Sun would look like a star of magnitude 5.68, in the direction where our sky has the constellation Centaurus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 4337A 0.42 light-years
- 2MASS J23254530+4251488 1.72 light-years
- Gl 14 7.55 light-years
- Gl 907 8.79 light-years
- GJ 1270 9.47 light-years
- Gl 913 10.1 light-years
- 2MASSI J2254188+312349 10.4 light-years
- Gl 875.1 10.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.