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At magnitude 1.5, it is the second-brightest star in Canis Major and the 23rd-brightest star in the sky. It is a blue-white supergiant of spectral type B2Iab, around 404 light-years from Earth. [39] This star is one of the brightest known extreme ultraviolet sources in the sky. [40] It is a binary star; the secondary is of magnitude 7.4.
Messier 41 (also known as M41 or NGC 2287) is an open cluster in the constellation Canis Major.It is sometimes referred to as the Little Beehive Cluster. [4] It was discovered by Giovanni Batista Hodierna before 1654 and was perhaps known to Aristotle about 325 BC. [5]
NGC 2204 is an open cluster of stars in the Canis Major constellation. It was discovered by the German-English astronomer William Herschel on 6 February 1785. [5] The cluster has an integrated visual magnitude of 8.6 and spans a diameter of 10.0′. Resolving the individual member stars is a challenge with a 10 to 12-inch amateur telescope. [3]
The open cluster NGC 2354 is located only 1.3 degrees east of Delta Canis Majoris. [14] As with the rest of Canis Major, Delta Canis Majoris is most visible in winter skies in the northern hemisphere, and summer skies in the southern. In Bayer's Uranometria, it is in the Great Dog's hind quarter. [15]
Map showing the location of NGC 2360. NGC 2360 (also known as Caroline's Cluster [3] or Caldwell 58) is an open cluster in the constellation Canis Major.It was discovered on 26 February 1783 [4] by Caroline Herschel, who described it as a "beautiful cluster of pretty compressed stars near 1/2 degree in diameter". [5]
An infrared color-magnitude diagram of Messier 79. This color-magnitude diagram was made using near-infrared images of the cluster in J and K bands. J-band magnitude is plotted along the y-axis and J to K dominant color is plotted along the x-axis. Such a diagram is made rapidly with specialized code for crowded-field photometry. [10]
• Notes = Common name(s) or alternate name(s); comments; notable properties [for example: multiple star status, range of variability if it is a variable star, exoplanets, etc.] See also [ edit ]
The brightest member star system is Tau Canis Majoris, and therefore it is sometimes called the Tau Canis Majoris Cluster. The cluster is located at a distance of approximately 1.48 kpc from the Sun , [ 1 ] and appears associated with the giant nebula Sh2-310 that lies at the same distance, [ 7 ] about one degree to the east.