Star · M3
GJ 4124
GJ 4124 is a main-sequence star of spectral type M3 in the constellation Cygnus, 55.8 light-years from the Sun.
| Constellation | Cygnus |
|---|---|
| Distance | 55.8 light-years (17.1 pc) |
| Apparent magnitude | magnitude 12.41 |
| Absolute magnitude | magnitude 11.25 |
| Spectral type | M3 |
| Surface temperature | 3,620 K |
| Luminosity | 0.0128 L☉ |
| Radius | 0.287 R☉ |
| Mass | 0.285 M☉ (estimated) |
| Right ascension (J2000) | 19h 50m 02.3s |
| Declination (J2000) | +32° 34′ 59″ |
| Space velocity (relative to the Sun) | 42.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.41. Visible from the whole Northern Hemisphere and south to latitude 57° S. North of latitude 57° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1970. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 989 thousand years.
The Sun seen from there
From a planet around GJ 4124, the Sun would look like a star of magnitude 5.99, in the direction where our sky has the constellation Puppis. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gaia J195557.27+321518.2 3.78 light-years
- HD 190360 5.15 light-years
- Gl 777B 5.17 light-years
- GJ 4109 6.66 light-years
- GJ 1241 6.78 light-years
- Gl 758 7.11 light-years
- WISE J191915.54+304558.4 7.47 light-years
- GJ 4113 7.59 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.