Star · G8III
12 Hya
12 Hya is a giant star of spectral type G8III in the constellation Hydra, 205.3 light-years from the Sun.
| Other names | HIP 43067 |
|---|---|
| Constellation | Hydra |
| Distance | 205.3 light-years (63.0 pc) |
| Apparent magnitude | magnitude 4.32 |
| Absolute magnitude | magnitude 0.32 |
| Spectral type | G8III |
| Surface temperature | 5,000 K |
| Luminosity | 87.4 L☉ |
| Radius | 12.5 R☉ |
| Mass | 3.26 M☉ (estimated) |
| Right ascension (J2000) | 8h 46m 22.5s |
| Declination (J2000) | −13° 32′ 52″ |
| Space velocity (relative to the Sun) | 8.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.32). Visible from the whole Southern Hemisphere and north to latitude 76° N. South of latitude 76° S 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 1821. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.6 million years.
The Sun seen from there
From a planet around 12 Hya, the Sun would look like a star of magnitude 8.83, in the direction where our sky has the constellation Delphinus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 9 Hya 9.81 light-years
- HIP 43655 15.6 light-years
- HIP 43973 18.3 light-years
- HIP 41683 18.7 light-years
- HIP 44863 19.3 light-years
- HIP 43920 19.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.