Star · ?
GJ 3391
GJ 3391 is a main-sequence star of spectral type ? in the constellation Auriga, 121.1 light-years from the Sun.
| Constellation | Auriga |
|---|---|
| Distance | 121.1 light-years (37.1 pc) |
| Apparent magnitude | magnitude 12.27 |
| Absolute magnitude | magnitude 9.42 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.0659 L☉ |
| Radius | 0.642 R☉ |
| Mass | 0.507 M☉ (estimated) |
| Right ascension (J2000) | 6h 21m 13.2s |
| Declination (J2000) | +44° 14′ 43″ |
| Space velocity (relative to the Sun) | 51.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.27. Visible from the whole Northern Hemisphere and south to latitude 46° S. North of latitude 46° N it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1905. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.1 million years.
The Sun seen from there
From a planet around GJ 3391, the Sun would look like a star of magnitude 7.68, in the direction where our sky has the constellation Corona Australis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 31143 9.21 light-years
- HD 40979 12.0 light-years
- PSO J088.0452+43.2123 13.8 light-years
- HIP 30023 15.7 light-years
- HIP 29824 15.9 light-years
- HIP 32702 18.1 light-years
- WISEA J063552.52+514820.4 19.0 light-years
- GJ 1091 19.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.