Alpha Hydri, Latinized from α Hydri, is the second brightest star in the southern circumpolar constellation of Hydrus. It is readily visible to the naked eye with an apparent visual magnitude of +2.9. It is sometimes informally known as the Head... Wikipedia
Constellation: Hydrus
Temperature: 7,087±47 K
Type of star: hypergiant star
Magnitude: 2.9
Luminosity: 21.00±0.75 L☉
Radius: 3.040±0.058 R☉
Declination: −61° 34′ 11.4948″