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Canis Major is a constellation in the southern celestial hemisphere. In the second century, it was included in Ptolemy 's 48 constellations, and is counted among the 88 modern constellations . Its name is Latin for "greater dog" in contrast to Canis Minor , the "lesser dog"; both figures are commonly represented as following the constellation ...
Sirius is the brightest star in the night sky.Its name is derived from the Greek word Σείριος (Latin script: Seirios), meaning lit. 'glowing' or 'scorching'. The star is designated α Canis Majoris, Latinized to Alpha Canis Majoris, and abbreviated α CMa or Alpha CMa.
The brightest star in the night sky is located in the southern celestial hemisphere and is larger than the Sun. Sirius in the constellation of Canis Major has the brightest apparent magnitude of −1.46; it has a radius twice that of the Sun and is 8.6 light-years away.
NGC 2359 (also known as Thor's Helmet) is an emission nebula [3] in the constellation Canis Major. The nebula is approximately 3,670 parsecs (11.96 thousand light years) away and 30 light-years in size. The central star is the Wolf-Rayet star WR7, an extremely hot star thought to be in a brief pre-supernova stage of evolution.
Sh 2-308, also designated as Sharpless 308, RCW 11, or LBN 1052, [1] and commonly known as the Dolphin-Head Nebula, is an H II region located near the center of the constellation Canis Major, composed of ionised hydrogen. [2] It is about 8 degrees south of Sirius, the brightest star in the night sky.
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]
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.
Beta Canis Majoris (β Canis Majoris, abbreviated Beta CMa, β CMa), also named Mirzam / ˈ m ɜːr z əm /, [13] is a star in the southern constellation of Canis Major, the "Great Dog", located at a distance of about 500 light-years (150 parsecs) from the Sun. [1] In the modern constellation it lies at the position of the dog's front leg.