Star · M5
GJ 3171
GJ 3171 is a main-sequence star of spectral type M5 in the constellation Cetus, 174.8 light-years from the Sun.
| Constellation | Cetus |
|---|---|
| Distance | 174.8 light-years (53.6 pc) |
| Apparent magnitude | magnitude 16.00 |
| Absolute magnitude | magnitude 12.35 |
| Spectral type | M5 |
| Surface temperature | 3,790 K |
| Luminosity | 0.0036 L☉ |
| Radius | 0.139 R☉ |
| Mass | 0.164 M☉ (estimated) |
| Right ascension (J2000) | 2h 37m 03.6s |
| Declination (J2000) | +6° 54′ 06″ |
| Space velocity (relative to the Sun) | 27.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 16.00. Visible from the whole Northern Hemisphere and south to latitude 83° 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 1851. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.1 million years.
The Sun seen from there
From a planet around GJ 3171, the Sun would look like a star of magnitude 8.48, 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 12087 7.45 light-years
- HIP 12856 9.33 light-years
- HIP 12034 13.5 light-years
- HIP 12925 14.0 light-years
- HIP 11417 15.8 light-years
- HIP 12862 17.1 light-years
- HIP 10616 17.4 light-years
- HIP 11360 17.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.