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Leo, with Leo Minor above, as depicted in Urania's Mirror, a set of constellation cards published in London c.1825 Leo is also home to a bright variable star , the red giant R Leonis . It is a Mira variable with a minimum magnitude of 10 and normal maximum magnitude of 6; it periodically brightens to magnitude 4.4.
Regulus is the brightest object in the constellation Leo and one of the brightest stars in the night sky. It has the Bayer designation designated α Leonis, which is Latinized to Alpha Leonis, and abbreviated Alpha Leo or α Leo. Regulus appears singular, but is actually a quadruple star system composed of four stars that are organized into two ...
γ Leonis (Latinised to Gamma Leonis) is the star's Bayer designation.The A and B components of the binary are often referred to as γ 1 Leonis and γ 2 Leonis, respectively.. It also bore the traditional name Algieba or Al Gieba, which originated from the Arabic الجبهة Al-Jabhah, meaning 'the forehead' (despite this meaning, the star actually appears in the mane of Leo).
Leo (♌︎) (Ancient Greek: Λέων, romanized: Léōn, Latin for "lion") is the fifth sign of the zodiac. It corresponds to the constellation Leo and comes after Cancer and before Virgo . The traditional Western zodiac associates Leo with the period between about July 23 and August 22, [ 2 ] and the sign spans the 120th to 150th degree of ...
Hevelius decided upon Leo Minor or Leo Junior as a depiction that would align with its beastly neighbours the Lion and the Great Bear. [6] In 1845, English astronomer Francis Baily revised the catalogue of Hevelius's new constellations, and assigned a Greek letter known as Bayer designation to stars brighter than apparent magnitude 4.5. [7]
NGC 2903 is an isolated barred spiral galaxy in the equatorial constellation of Leo, positioned about 1.5° due south of Lambda Leonis. [10] It was discovered by German-born astronomer William Herschel, who cataloged it on November 16, 1784.
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(Bayer might have called Altair "Beta Tympani Flumine" if he had been cataloguing Chinese constellations.) Some stars also have traditional names, often related to mythology or astrology. For example, Altair is more commonly known as 牛郎星 or 牵牛星 (the Star of the Cowherd) in Chinese, after the mythological story of the Cowherd and ...
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