Star · M7
GJ 4193
GJ 4193 is a main-sequence star of spectral type M7 in the constellation Microscopium, 77.7 light-years from the Sun.
| Constellation | Microscopium |
|---|---|
| Distance | 77.7 light-years (23.8 pc) |
| Apparent magnitude | magnitude 12.67 |
| Absolute magnitude | magnitude 10.79 |
| Spectral type | M7 |
| Surface temperature | 3,750 K |
| Luminosity | 0.0162 L☉ |
| Radius | 0.302 R☉ |
| Mass | 0.316 M☉ (estimated) |
| Right ascension (J2000) | 21h 26m 12.5s |
| Declination (J2000) | −42° 26′ 00″ |
| Space velocity (relative to the Sun) | 9.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.67. 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 1948. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.4 million years.
The Sun seen from there
From a planet around GJ 4193, the Sun would look like a star of magnitude 6.71, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 825.2 2.28 light-years
- Gl 828B 3.23 light-years
- Gl 828A 3.24 light-years
- HIP 107772 6.22 light-years
- GJ 9754 6.74 light-years
- Gl 826.2 7.56 light-years
- Gl 812.1 10.4 light-years
- WISEA J204928.59-443143.9 10.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.