Star · K3
GJ 1239
GJ 1239 is a main-sequence star of spectral type K3 in the constellation Sagittarius, 68.9 light-years from the Sun.
| Other names | HIP 96113 |
|---|---|
| Constellation | Sagittarius |
| Distance | 68.9 light-years (21.1 pc) |
| Apparent magnitude | magnitude 8.69 |
| Absolute magnitude | magnitude 7.06 |
| Spectral type | K3 |
| Surface temperature | 4,540 K |
| Luminosity | 0.227 L☉ |
| Radius | 0.77 R☉ |
| Mass | 0.69 M☉ (estimated) |
| Right ascension (J2000) | 19h 32m 30.3s |
| Declination (J2000) | −35° 27′ 06″ |
| Space velocity (relative to the Sun) | 63.3 km/s |
In the sky
Too faint for the naked eye (magnitude 8.69); 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 July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1957. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around GJ 1239, the Sun would look like a star of magnitude 6.46, in the direction where our sky has the constellation Lynx. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 755 4.88 light-years
- GJ 4104 6.41 light-years
- CWISE J192636.29-342955.7 6.56 light-years
- Gl 773.4 8.08 light-years
- TOI-2194 9.13 light-years
- CWISE J200121.21-413606.8 10.0 light-years
- HIP 96710 10.8 light-years
- WISE J201748.72-342102.5 11.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.