Star · K3
GJ 3905
GJ 3905 is a main-sequence star of spectral type K3 in the constellation Libra, 72.3 light-years from the Sun.
| Other names | HIP 75542 |
|---|---|
| Constellation | Libra |
| Distance | 72.3 light-years (22.2 pc) |
| Apparent magnitude | magnitude 8.82 |
| Absolute magnitude | magnitude 7.09 |
| Spectral type | K3 |
| Surface temperature | 4,640 K |
| Luminosity | 0.208 L☉ |
| Radius | 0.707 R☉ |
| Mass | 0.675 M☉ (estimated) |
| Right ascension (J2000) | 15h 25m 58.5s |
| Declination (J2000) | −26° 42′ 21″ |
| Space velocity (relative to the Sun) | 158.8 km/s |
In the sky
Too faint for the naked eye (magnitude 8.82); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 63° N. South of latitude 63° S it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1954. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.3 million years.
The Sun seen from there
From a planet around GJ 3905, the Sun would look like a star of magnitude 6.56, in the direction where our sky has the constellation Aries. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- PSO J226.2599-28.8959 7.57 light-years
- GJ 1196 9.85 light-years
- Gl 563.2B 11.0 light-years
- GJ 3888 12.6 light-years
- HIP 75798 12.7 light-years
- HIP 78734 13.2 light-years
- HD 134987 13.8 light-years
- HIP 79578 14.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.