Star · M4
GJ 3719
GJ 3719 is a main-sequence star of spectral type M4 in the constellation Coma Berenices, 125.5 light-years from the Sun.
| Constellation | Coma Berenices |
|---|---|
| Distance | 125.5 light-years (38.5 pc) |
| Apparent magnitude | magnitude 14.15 |
| Absolute magnitude | magnitude 11.22 |
| Spectral type | M4 |
| Surface temperature | 3,620 K |
| Luminosity | 0.0131 L☉ |
| Radius | 0.29 R☉ |
| Mass | 0.287 M☉ (estimated) |
| Right ascension (J2000) | 12h 16m 58.8s |
| Declination (J2000) | +31° 09′ 25″ |
| Space velocity (relative to the Sun) | 41.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.15. Visible from the whole Northern Hemisphere and south to latitude 59° S. North of latitude 59° N 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 1900. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
The Sun seen from there
From a planet around GJ 3719, the Sun would look like a star of magnitude 7.76, in the direction where our sky has the constellation Sculptor. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 60346 4.37 light-years
- HIP 61436 12.3 light-years
- HIP 61739 14.6 light-years
- HIP 60614 15.3 light-years
- HIP 59772 16.4 light-years
- HIP 60265 16.5 light-years
- HIP 61198 17.9 light-years
- HIP 61016 18.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.