Star · M5
GJ 3104
GJ 3104 is a main-sequence star of spectral type M5 in the constellation Pisces, 139.4 light-years from the Sun.
| Constellation | Pisces |
|---|---|
| Distance | 139.4 light-years (42.7 pc) |
| Apparent magnitude | magnitude 12.83 |
| Absolute magnitude | magnitude 9.68 |
| Spectral type | M5 |
| Surface temperature | 3,790 K |
| Luminosity | 0.0424 L☉ |
| Radius | 0.477 R☉ |
| Mass | 0.454 M☉ (estimated) |
| Right ascension (J2000) | 1h 39m 31.2s |
| Declination (J2000) | +5° 03′ 32″ |
| Space velocity (relative to the Sun) | 38.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.83. Visible from the whole Northern Hemisphere and south to latitude 85° S. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1887. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.5 million years.
The Sun seen from there
From a planet around GJ 3104, the Sun would look like a star of magnitude 7.98, in the direction where our sky has the constellation Virgo. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 7860 5.08 light-years
- ULAS J013017.79+080453.9 12.6 light-years
- ULAS J013243.81+055232.2 13.0 light-years
- GJ 3095 14.9 light-years
- HIP 6653 15.2 light-years
- HIP 8998 15.3 light-years
- HIP 7794 15.5 light-years
- HIP 8588 16.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.