Back to Constellations
Southern•CMa
Canis Major
Canis Major
Description
Canis Major is famous for containing Sirius, the brightest star in the night sky. Sirius is a binary star with a white dwarf companion. The "winter triangle" includes Sirius, Betelgeuse, and Procyon.
Mythology and History
Canis Major is one of Orion's hunting dogs. Sirius, its main star, was very important to the Egyptians: its heliacal rising marked the beginning of the Nile flood and the Egyptian New Year.
How to Observe
Visible from December to March. Sirius is unmistakable for its intense brightness. Following Orion's belt southeast leads directly to Sirius.
Main Stars
Sirio
Brightest star • mag -1.46
Adhara
Wezen
Mirzam
Aludra
Quick Facts
Brightest starSirio
Magnitude-1.46
Area380 square degrees
Best seasonWinter
HemisphereSouthern
TypeSouthern