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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.
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]
His constellation diagrams were adopted widely and now appear in many astronomy guides, such as Donald H. Menzel's A Field Guide to the Stars and Planets. As of 2008 The Stars: A New Way to See Them and a simplified presentation for children called Find the Constellations are still in print.
Messier 95, also known as M95 or NGC 3351, is a barred spiral galaxy about 33 million light-years away in the zodiac constellation Leo. It was discovered by Pierre Méchain in 1781, and catalogued by compatriot Charles Messier four days later. In 2012 its most recent supernova was discovered.
The modern constellation Leo lies across one of the quadrants symbolized by the Vermilion Bird of the South (南方朱雀, Nán Fāng Zhū Què), and Three Enclosures (三垣, Sān Yuán), that divide the sky in traditional Chinese uranography.
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 ...
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Epsilon Leonis (ε Leo, ε Leonis) is the fifth-brightest star in the constellation Leo, consistent with its Bayer designation Epsilon. It is known as Algenubi or Ras Elased Australis. Both names mean "the southern star of the lion's head". Australis is Latin for "southern" and Genubi is Arabic for "south".