Canis Major

Canis Major is a prominent southern constellation dominated by Sirius, the brightest star in the entire night sky at magnitude -1.46. Sirius is only 8.6 light-years from Earth. The constellation also contains several bright open clusters including M41.

Location in the Sky

When to Observe

Canis Major is best observed during February. It is located in the SQ2 quadrant and is primarily visible from the southern hemisphere. The constellation contains 8 main stars forming its asterism, with 32 Bayer/Flamsteed designated stars in total. Its brightest star is Sirius.

Mythology & History

In Greek mythology, Canis Major is one of Orion's hunting dogs, faithfully following the great hunter across the sky. Some traditions identify it as Laelaps, the dog that never failed to catch its quarry. The ancient Egyptians associated Sirius with the goddess Isis, and its rising heralded the Nile flood.