Skylore One of Orion's two faithful dogs, following him across the sky. B.C. This constellation has been associated with several mythical dogs, including the hound of Actaeon. Description South of Orion in the Winter Hexagon, near the horizon. Sirius is the brightest star in the sky. The size of each star indicates its relative magnitude .
Constellation names are light blue .
Messier object numbers are pink . Globular clusters are gold starbursts . Open clusters are dotted white circles. Planetary nebula are green diamonds . Bright nebula are magenta squares .