Star · A5III
2 Hya
2 Hya is a giant star of spectral type A5III in the constellation Hydra, 152.1 light-years from the Sun.
| Other names | HIP 41375 |
|---|---|
| Constellation | Hydra |
| Distance | 152.1 light-years (46.6 pc) |
| Apparent magnitude | magnitude 5.60 |
| Absolute magnitude | magnitude 2.26 |
| Spectral type | A5III |
| Surface temperature | 8,030 K |
| Luminosity | 11.3 L☉ |
| Radius | 1.74 R☉ |
| Mass | 1.83 M☉ (estimated) |
| Right ascension (J2000) | 8h 26m 27.2s |
| Declination (J2000) | −3° 59′ 15″ |
| Space velocity (relative to the Sun) | 33.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.60). Visible from the whole Southern Hemisphere and north to latitude 86° N. 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 1874. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.7 million years.
The Sun seen from there
From a planet around 2 Hya, the Sun would look like a star of magnitude 8.17, 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):
- HIP 41351 7.24 light-years
- HIP 42228 8.02 light-years
- HIP 40663 8.71 light-years
- HIP 41425 9.75 light-years
- HIP 41274 11.9 light-years
- HIP 41968 12.8 light-years
- HIP 40613 13.0 light-years
- HIP 42408 13.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.