Beta Canis Majoris (β CMa / β Canis Majoris) is a star in the constellation of Canis Major. It also has the traditional name Murzim or Murzam. Jump to: navigation, search Orion is a remarkable constellation, visible from most places on the globe (but not always the whole year long). ... Canis Major (Latin for big dog) is one of the 88 modern constellations, and was also in Ptolemys list of 48 constellations. ...
Murzim is 715 light years away from Earth. A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... Jump to: navigation, search Earth, also known as the Earth, Terra, and (mostly in the 19th century) Tellus, is the third-closest planet to the Sun. ...
It is also has Flamsteed designation 2 CMa. Flamsteed designations for stars are similar to Bayer designations, except that they use numbers instead of Greek letters. ...
Categories: Star stubs | Bayer objects | Blue-white bright giants | Blue-white giants | Canis Major constellation | Variable stars Right ascension (RA; symbol Î±: Greek letter alpha) is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. ... In astronomy, declination (dec) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. ...
The fourth brightest star in the constellationCanis Major; its Arabic name (also spelled Murzim) suggests that it is an announcer of Sirius, as Mirzam rises first, but the exact meaning is unclear.
Mirzam is a hot giant B star, coming to the end of its core hydrogen fusion, and is one of the brightest of the variables known as Beta Cephei stars or, sometimes, after itself, as BetaCanisMajoris stars.
It is also one of the local stars whose light is used as a background to study the interstellar medium, and lies along a sort of tunnel in which the gas is especially hot and thin.
Combined with betaCanisMajoris (Mirzam), it was Al Murzim, "the Anouncer" announcing the rising of Sirius; in the plural Al Mirzamani, or as Al Mirzama al Shi'rayain, the two Sirian Announcers [Many radio and TV announcers are influenced by these stars].
Beta has some close companions of the 10th and 12th magnitudes.
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