Star · ?
GJ 3740
GJ 3740 is a main-sequence star of spectral type ? in the constellation Musca, 47.2 light-years from the Sun.
| Constellation | Musca |
|---|---|
| Distance | 47.2 light-years (14.5 pc) |
| Apparent magnitude | magnitude 13.50 |
| Absolute magnitude | magnitude 12.70 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.00322 L☉ |
| Radius | 0.142 R☉ |
| Mass | 0.156 M☉ (estimated) |
| Right ascension (J2000) | 12h 42m 19.9s |
| Declination (J2000) | −71° 37′ 52″ |
| Space velocity (relative to the Sun) | 51.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.50. Visible from the whole Southern Hemisphere and north to latitude 18° N. South of latitude 18° S it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1979. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 837 thousand years.
The Sun seen from there
From a planet around GJ 3740, the Sun would look like a star of magnitude 5.63, in the direction where our sky has the constellation Cassiopeia. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 2092 5.61 light-years
- Gl 472 6.17 light-years
- GJ 3625 8.50 light-years
- CWISEP J124138.41-820051.9 8.55 light-years
- DENIS J1013-7842 9.44 light-years
- 2MASS J13550323-8258375 9.74 light-years
- CWISE J112106.36-623221.5 10.2 light-years
- Gl 391 10.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.