Star · G8III
κ Gem
κ Gem is a giant star of spectral type G8III in the constellation Gemini, 147.6 light-years from the Sun.
| Other names | HIP 37740 |
|---|---|
| Constellation | Gemini |
| Distance | 147.6 light-years (45.3 pc) |
| Apparent magnitude | magnitude 3.57 |
| Absolute magnitude | magnitude 0.29 |
| Spectral type | G8III |
| Surface temperature | 4,910 K |
| Luminosity | 93.7 L☉ |
| Radius | 13.4 R☉ |
| Mass | 3.32 M☉ (estimated) |
| Right ascension (J2000) | 7h 44m 26.8s |
| Declination (J2000) | +24° 23′ 53″ |
| Space velocity (relative to the Sun) | 23.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.57). Visible from the whole Northern Hemisphere and south to latitude 66° S. North of latitude 66° N it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1878. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.6 million years.
The Sun seen from there
From a planet around κ Gem, the Sun would look like a star of magnitude 8.11, in the direction where our sky has the constellation Sagittarius. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 37165 6.80 light-years
- SDSS J075656.54+231458.5 8.85 light-years
- HIP 39528 13.1 light-years
- HIP 37246 13.8 light-years
- HIP 37722 13.8 light-years
- ULAS J074720.07+245516.3 14.1 light-years
- HIP 38172 14.5 light-years
- 2MASS J07244848+2506143 14.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.