Star · M3
GJ 3908
GJ 3908 is a main-sequence star of spectral type M3 in the constellation Libra, 100.5 light-years from the Sun.
| Constellation | Libra |
|---|---|
| Distance | 100.5 light-years (30.8 pc) |
| Apparent magnitude | magnitude 13.70 |
| Absolute magnitude | magnitude 11.26 |
| Spectral type | M3 |
| Surface temperature | 3,850 K |
| Luminosity | 0.00913 L☉ |
| Radius | 0.214 R☉ |
| Mass | 0.246 M☉ (estimated) |
| Right ascension (J2000) | 15h 31m 38.0s |
| Declination (J2000) | −26° 55′ 25″ |
| Space velocity (relative to the Sun) | 84.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.70. Visible from the whole Southern Hemisphere and north to latitude 63° N. South of latitude 63° S it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1926. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.8 million years.
The Sun seen from there
From a planet around GJ 3908, the Sun would look like a star of magnitude 7.27, in the direction where our sky has the constellation Taurus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3914 8.86 light-years
- HIP 75753 11.0 light-years
- HIP 76793 11.0 light-years
- 2MASS J15230657-2347526 11.6 light-years
- HIP 75363 12.7 light-years
- HIP 74815 15.1 light-years
- CWISEP J151521.22-215736.9 16.0 light-years
- TOI-836 16.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.