Alphard (α Hydrae) is the brightest star in the constellation Hydra. It is 180 light-years (ly) away and has an apparent magnitude of 1.98 mag.
Alphard has an optical companion (optical double star) at a distance of 281″ at 153°, a blue star of magnitude 10, without physical reference.
| Alphard | |
|---|---|
| Constellation | Hydra |
| Right ascension | 09h 27m 35.24s |
| Declination | -08° 39′ 31″ |
| Apparent magnitude | 1.99 mag |
| Distance | (180.3 ± 1.8) |
| Bayer designation | α Hydrae |
| Bright Star Catalogue | HR 3748 |
| Hipparcos Catalogue | HIP 46390 |
| SAO Catalogue | SAO 136871 |
