Star · K2V
GJ 1240
GJ 1240 is a main-sequence star of spectral type K2V in the constellation Aquila, 57.7 light-years from the Sun.
| Other names | HIP 96085 |
|---|---|
| Constellation | Aquila |
| Distance | 57.7 light-years (17.7 pc) |
| Apparent magnitude | magnitude 7.53 |
| Absolute magnitude | magnitude 6.29 |
| Spectral type | K2V |
| Surface temperature | 4,940 K |
| Luminosity | 0.368 L☉ |
| Radius | 0.829 R☉ |
| Mass | 0.779 M☉ (estimated) |
| Right ascension (J2000) | 19h 32m 06.7s |
| Declination (J2000) | −11° 16′ 30″ |
| Space velocity (relative to the Sun) | 52.8 km/s |
In the sky
Too faint for the naked eye (magnitude 7.53); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 79° N. South of latitude 79° 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 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 1240, the Sun would look like a star of magnitude 6.07, in the direction where our sky has the constellation Canis Minor. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 773B 6.39 light-years
- Gl 773A 6.43 light-years
- Gl 741 8.17 light-years
- GJ 4133 8.26 light-years
- WISE J200804.71-083428.5 9.31 light-years
- 2MASS J20025073-0521524 9.68 light-years
- GJ 4132 10.3 light-years
- CWISEP J193518.59-154620.3 11.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.