Star · M2
GJ 4207
GJ 4207 is a main-sequence star of spectral type M2 in the constellation Piscis Austrinus, 39.4 light-years from the Sun.
| Constellation | Piscis Austrinus |
|---|---|
| Distance | 39.4 light-years (12.1 pc) |
| Apparent magnitude | magnitude 12.57 |
| Absolute magnitude | magnitude 12.16 |
| Spectral type | M2 |
| Surface temperature | 3,620 K |
| Luminosity | 0.00553 L☉ |
| Radius | 0.189 R☉ |
| Mass | 0.198 M☉ (estimated) |
| Right ascension (J2000) | 21h 38m 41.7s |
| Declination (J2000) | −33° 39′ 46″ |
| Space velocity (relative to the Sun) | 66.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.57. Visible from the whole Southern Hemisphere and north to latitude 56° N. South of latitude 56° 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 1987. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 700 thousand years.
The Sun seen from there
From a planet around GJ 4207, the Sun would look like a star of magnitude 5.24, in the direction where our sky has the constellation Leo Minor. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 4198 5.00 light-years
- PSO J319.3102-29.6682 5.66 light-years
- WISEPC J220922.10-273439.5 7.39 light-years
- WISE J222055.31-362817.4 7.43 light-years
- GJ 4288A 9.16 light-years
- WISE J210200.15-442919.5 9.45 light-years
- 2MASS J22282889-4310262 9.68 light-years
- Gl 799A 10.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.