Star · K5
GJ 3922
GJ 3922 is a main-sequence star of spectral type K5 in the constellation Ursa Minor, 84.2 light-years from the Sun.
| Other names | HIP 77409 |
|---|---|
| Constellation | Ursa Minor |
| Distance | 84.2 light-years (25.8 pc) |
| Apparent magnitude | magnitude 9.24 |
| Absolute magnitude | magnitude 7.18 |
| Spectral type | K5 |
| Surface temperature | 4,210 K |
| Luminosity | 0.266 L☉ |
| Radius | 0.97 R☉ |
| Mass | 0.718 M☉ (estimated) |
| Right ascension (J2000) | 15h 48m 10.0s |
| Declination (J2000) | +74° 24′ 51″ |
| Space velocity (relative to the Sun) | 51.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.24. Visible from the whole Northern Hemisphere and south to latitude 16° S. North of latitude 16° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1942. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.5 million years.
The Sun seen from there
From a planet around GJ 3922, the Sun would look like a star of magnitude 6.89, in the direction where our sky has the constellation Hydrus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEA J151620.39+721745.4 4.62 light-years
- GJ 3951B 5.30 light-years
- GJ 3941 10.2 light-years
- GJ 3902 10.2 light-years
- Gl 580.2 11.1 light-years
- GJ 3986 11.5 light-years
- PSO J243.9421+67.2075 11.5 light-years
- HD 150706 11.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.