Star · M6
GJ 4224A
GJ 4224A is a main-sequence star of spectral type M6 in the constellation Grus, 66.7 light-years from the Sun.
| Other names | HIP 107711 |
|---|---|
| Constellation | Grus |
| Distance | 66.7 light-years (20.4 pc) |
| Apparent magnitude | magnitude 11.52 |
| Absolute magnitude | magnitude 9.97 |
| Spectral type | M6 |
| Surface temperature | 3,690 K |
| Luminosity | 0.0374 L☉ |
| Radius | 0.473 R☉ |
| Mass | 0.44 M☉ (estimated) |
| Right ascension (J2000) | 21h 49m 11.9s |
| Declination (J2000) | −41° 33′ 32″ |
| Space velocity (relative to the Sun) | 106.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.52. Visible from the whole Southern Hemisphere and north to latitude 48° N. South of latitude 48° S 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 1959. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around GJ 4224A, the Sun would look like a star of magnitude 6.38, in the direction where our sky has the constellation Ursa Major. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 851.2 7.18 light-years
- WISE J221140.52-475826.5 9.84 light-years
- Gl 826.2 10.2 light-years
- HIP 107772 10.4 light-years
- GJ 4242A 11.1 light-years
- GJ 4249 11.2 light-years
- GJ 4271 11.8 light-years
- CWISEP J213838.74-313808.5 12.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.