Star · M4
GJ 4197
GJ 4197 is a main-sequence star of spectral type M4 in the constellation Capricornus, 68.9 light-years from the Sun.
| Constellation | Capricornus |
|---|---|
| Distance | 68.9 light-years (21.1 pc) |
| Apparent magnitude | magnitude 12.21 |
| Absolute magnitude | magnitude 10.59 |
| Spectral type | M4 |
| Surface temperature | 3,710 K |
| Luminosity | 0.0207 L☉ |
| Radius | 0.349 R☉ |
| Mass | 0.351 M☉ (estimated) |
| Right ascension (J2000) | 21h 28m 18.3s |
| Declination (J2000) | −22° 18′ 33″ |
| Space velocity (relative to the Sun) | 33.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.21. Visible from the whole Southern Hemisphere and north to latitude 68° N. South of latitude 68° 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 1957. 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 4197, the Sun would look like a star of magnitude 6.45, in the direction where our sky has the constellation Leo. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- PSO J318.5338-22.8603 5.37 light-years
- Gl 836 6.52 light-years
- GJ 4179 9.56 light-years
- Gl 811 9.86 light-years
- Gl 825.4A 9.93 light-years
- Gl 825.4B 9.93 light-years
- CWISE J205701.64-170407.3 11.2 light-years
- CWISEP J213838.74-313808.5 11.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.