Canis Major

The Greater Dog

Abbreviation: CMa
Genitive: Canis Majoris

The constellation of Canis Major

Canis Major is usually considered to be one of Orion's hunting dogs.

Notable Features

Designation Name Description
α CMa Sirius Sirius is also known as the 'Dog Star'. It is one of the closest stars to the Sun and is the brightest star in the night sky. Its companion, Sirius B, was the first white dwarf star discovered and is the closest one to the Sun. The existance of this previously unseen companion was predicted in 1844 by Friedrich Bessel on the basis of the orbital motion of Sirius. Alvan Clark first saw it in 1862 and its identity as a white dwarf was established in 1925 by Walter Sydney Adams.
β CMa Mirzam
γ CMa Muliphein
δ CMa Wezen
ε CMa Adhara
ζ CMa Furud
η CMa Aludra
M41 This is a distant open cluster, best seen with binoculars or a small telescope.
C58 This is another open cluster, discovered by Caroline Herschel in 1783.
C64 This is a young, massive open cluster which requires a small telescope to see it properly. τ CMa is its brightest member.