Canis Major

Canis Major is a constellation in the southern sky, best known for containing Sirius, the brightest star in Earth’s night sky.

Adhara: Adhara is a blue-white giant star and the second-brightest star in Canis Major. It is another conspicuous star in the constellation’s recognizable outline.
Messier 41: Messier 41 is an open star cluster visible to the naked eye under dark skies. This prominent cluster lies within Canis Major, several degrees south of Sirius.
Ptolemy: Ptolemy was a Greco-Roman mathematician and astronomer whose Almagest cataloged ancient constellations. Canis Major appears among the constellations recorded in his influential star catalog.
Orion: Orion is a prominent constellation near the celestial equator, depicted in Greek tradition as a hunter. Canis Major is commonly represented as one of the dogs accompanying Orion.
Wezen: Wezen is a luminous yellow-white supergiant star in Canis Major. Its position helps form the constellation’s southern figure.
NGC 2362: NGC 2362 is an open star cluster centered on the bright star Tau Canis Majoris. It is a compact cluster in the constellation, easily identified by its central star.
Almagest: The Almagest is Ptolemy’s second-century treatise on astronomy and its mathematical models. It preserves an early systematic account of Canis Major and its stars.
Sirius: Sirius is a binary star system and the brightest star in Earth’s night sky. Its visibility and seasonal appearance gave the constellation cultural significance across societies.
Mirzam: Mirzam is a blue giant star in Canis Major, near Sirius in the sky. Its proximity to Sirius makes it a useful landmark within the constellation.
NGC 2359: NGC 2359 is an emission nebula also known as Thor’s Helmet. This sculpted nebula is a distinctive deep-sky object in Canis Major.

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Epsilon Canis MajorisNarrower topic: Adhara is one of the constellation’s brightest stars.