Star · G2V
GJ 3968
GJ 3968 is a main-sequence star of spectral type G2V in the constellation Hercules, 70.0 light-years from the Sun.
| Other names | HIP 81655 |
|---|---|
| Constellation | Hercules |
| Distance | 70.0 light-years (21.5 pc) |
| Apparent magnitude | magnitude 11.45 |
| Absolute magnitude | magnitude 9.79 |
| Spectral type | G2V |
| Surface temperature | 5,780 K |
| Luminosity | 0.0113 L☉ |
| Radius | 0.106 R☉ |
| Mass | 0.269 M☉ (estimated) |
| Right ascension (J2000) | 16h 40m 49.0s |
| Declination (J2000) | +36° 18′ 59″ |
| Space velocity (relative to the Sun) | 77.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.45. Visible from the whole Northern Hemisphere and south to latitude 54° S. North of latitude 54° N 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 1956. 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 3968, the Sun would look like a star of magnitude 6.49, in the direction where our sky has the constellation Caelum. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3974 5.17 light-years
- 2MASSW J1615441+355900 7.77 light-years
- σ CrB 8.33 light-years
- σ CrB 8.40 light-years
- Gl 615.2C 8.42 light-years
- WISEPA J171104.60+350036.8 9.56 light-years
- SDSS J163030.53+434404.0 10.0 light-years
- GJ 3933 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.