Original: Canopus (Î Car, Î Carinae, Alpha Carinae) is the brightest star in the southern constellation of Carina and Argo Navis, and the second brightest star in the night-time sky, after Sirius. Canopus's visual magnitude is 0.72, and it has an absolute magnitude of 5.53.
Simplified: Canopus, or Alpha Carinae in the Bayer designation system is the brightest star in its constellation (Canopus) and the brightest star in the southern night sky.