Star · K2V
GJ 3317
GJ 3317 is a main-sequence star of spectral type K2V in the constellation Caelum, 57.7 light-years from the Sun.
| Other names | HIP 22451 |
|---|---|
| Constellation | Caelum |
| Distance | 57.7 light-years (17.7 pc) |
| Apparent magnitude | magnitude 7.49 |
| Absolute magnitude | magnitude 6.25 |
| Spectral type | K2V |
| Surface temperature | 4,990 K |
| Luminosity | 0.372 L☉ |
| Radius | 0.815 R☉ |
| Mass | 0.781 M☉ (estimated) |
| Right ascension (J2000) | 4h 49m 52.3s |
| Declination (J2000) | −35° 06′ 27″ |
| Space velocity (relative to the Sun) | 24.0 km/s |
In the sky
Too faint for the naked eye (magnitude 7.49); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 55° N. South of latitude 55° S 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 1968. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.0 million years.
The Sun seen from there
From a planet around GJ 3317, the Sun would look like a star of magnitude 6.07, in the direction where our sky has the constellation Hercules. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASSI J0445538-304820 6.55 light-years
- GJ 3303 6.73 light-years
- GJ 2037 7.01 light-years
- HIP 25283 7.94 light-years
- GJ 1079 8.10 light-years
- 2MASS J05103520-4208140 8.88 light-years
- LHS 1678 9.41 light-years
- 2MASS J04250679-4255085 9.69 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.