Star · ?
GJ 1216
GJ 1216 is a main-sequence star of spectral type ? in the constellation Hercules, 58.6 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 58.6 light-years (18.0 pc) |
| Apparent magnitude | magnitude 14.48 |
| Absolute magnitude | magnitude 13.21 |
| Spectral type | ? |
| Surface temperature | 3,570 K |
| Luminosity | 0.00228 L☉ |
| Radius | 0.125 R☉ |
| Mass | 0.135 M☉ (estimated) |
| Right ascension (J2000) | 17h 20m 44.9s |
| Declination (J2000) | +49° 15′ 16″ |
| Space velocity (relative to the Sun) | 110.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.48. Visible from the whole Northern Hemisphere and south to latitude 41° S. North of latitude 41° N it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1967. 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 1216, the Sun would look like a star of magnitude 6.10, in the direction where our sky has the constellation Pictor. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 84616 3.83 light-years
- HD 154345 3.97 light-years
- Gl 649.1B 4.33 light-years
- HD 153557 4.33 light-years
- Gl 649.1C 4.36 light-years
- WISE J174303.71+421150.0 8.69 light-years
- 2MASS J17461199+5034036 10.1 light-years
- CWISE J165013.37+565257.0 10.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.