Star · M4
GJ 3737
GJ 3737 is a main-sequence star of spectral type M4 in the constellation Centaurus, 21.7 light-years from the Sun.
| Constellation | Centaurus |
|---|---|
| Distance | 21.7 light-years (6.66 pc) |
| Apparent magnitude | magnitude 12.74 |
| Absolute magnitude | magnitude 13.62 |
| Spectral type | M4 |
| Surface temperature | 3,530 K |
| Luminosity | 0.00167 L☉ |
| Radius | 0.109 R☉ |
| Mass | 0.117 M☉ (estimated) |
| Right ascension (J2000) | 12h 38m 49.5s |
| Declination (J2000) | −38° 22′ 29″ |
| Space velocity (relative to the Sun) | 46.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.74. Visible from the whole Southern Hemisphere and north to latitude 52° N. South of latitude 52° S it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 2004. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 386 thousand years.
The Sun seen from there
From a planet around GJ 3737, the Sun would look like a star of magnitude 3.95, in the direction where our sky has the constellation Andromeda. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.