With a visual magnitude of − 0.04 , it is the fourth brightest star in the night sky , after − 1.46 magnitude Sirius , − 0.86 magnitude Canopus , and − 0.27 magnitude Alpha Centauri .
With an apparent magnitude of − 0.04 , it is the fourth brightest star in the night sky , after − 1.46 magnitude Sirius , − 0.86 magnitude Canopus , and − 0.27 magnitude Alpha Centauri .