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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.
This is the list of notable stars in the constellation Leo, sorted by decreasing brightness. Name B F G. Var HD HIP RA Dec vis. mag. abs. mag. Dist. Sp. class Notes ...
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 ...
Theta Leonis, Latinized from θ Leonis, formally named Chertan, [10] is a star in the constellation of Leo.With an apparent visual magnitude of +3.324 [2] it is visible to the naked eye and forms one of the brighter stars in the constellation.
Lambda Leonis (λ Leonis, abbreviated Lam Leo, λ Leo), formally named Alterf / æ l ˈ t ər f /, [9] [10] is a star in the constellation of Leo.The star is bright enough to be seen with the naked eye, having an apparent visual magnitude of 4.32 [2] Based upon an annual parallax shift of 0.00991 arcseconds, it is located about 329 light-years from the Sun.
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.
Messier 65 (also known as NGC 3623) is an intermediate spiral galaxy about 35 million light-years away in the constellation Leo, within its highly equatorial southern half. It was discovered by Charles Messier in 1780. With M66 and NGC 3628, it forms the Leo Triplet, a small close group of galaxies.
NGC 3384 is an elliptical galaxy in the constellation Leo. The galaxy was discovered by William Herschel in 1784 as part of the Herschel 400 Catalogue. The high age of the stars in the central region of NGC 3384 was confirmed after analysis of their color. More than 80% were found to be Population II stars which are over a billion years old. [5]
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