Star · K9V
GJ 3216
GJ 3216 is a main-sequence star of spectral type K9V in the constellation Perseus, 83.7 light-years from the Sun.
| Other names | HIP 15406 |
|---|---|
| Constellation | Perseus |
| Distance | 83.7 light-years (25.7 pc) |
| Apparent magnitude | magnitude 11.33 |
| Absolute magnitude | magnitude 9.28 |
| Spectral type | K9V |
| Surface temperature | 3,830 K |
| Luminosity | 0.0578 L☉ |
| Radius | 0.545 R☉ |
| Mass | 0.49 M☉ (estimated) |
| Right ascension (J2000) | 3h 18m 38.3s |
| Declination (J2000) | +32° 39′ 57″ |
| Space velocity (relative to the Sun) | 28.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.33. Visible from the whole Northern Hemisphere and south to latitude 57° S. North of latitude 57° N it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1942. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.5 million years.
The Sun seen from there
From a planet around GJ 3216, the Sun would look like a star of magnitude 6.88, in the direction where our sky has the constellation Lupus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 15323 2.64 light-years
- WISEPA J030724.57+290447.6 6.58 light-years
- HIP 17458 8.54 light-years
- WISE J033651.90+282628.8 8.58 light-years
- HIP 16209 9.06 light-years
- GJ 3190 11.2 light-years
- GJ 3183 11.7 light-years
- WISE J031614.68+382008.0 12.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.