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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 ...
The Book of Fixed Stars, a 10th-century synthesis of the comprehensive star catalogue in Ptolemy’s Almagest with local Arabic astronomical traditions on the constellations (notably the constellation system of the Anwā’). This page shows Orion (al-jabbar, "the giant"). The star Rigel in his foot derives its name from the Arabic rijl, "foot."
• Notes = Common name(s) or alternate name(s); comments; notable properties [for example: multiple star status, range of variability if it is a variable star, exoplanets, etc.] See also [ edit ]
The star Wolf 359 (CN Leonis), one of the nearest stars to Earth at 7.8 light-years away, is in Leo. Wolf 359 is a red dwarf of magnitude 13.5; it periodically brightens by one magnitude or less because it is a flare star. [4] Gliese 436, a faint star in Leo about 33 light-years away from the Sun, is orbited by a transiting Neptune-mass ...
In 2016, the International Astronomical Union (IAU) organized a Working Group on Star Names (WGSN) [2] to catalog and standardize proper names for stars. The WGSN's first bulletin, dated July 2016, [3] included a table of 125 stars comprising the first two batches of names approved by the WGSN (on 30 June and 20 July 2016) together with names of stars adopted by the IAU Executive Committee ...
Rho Leonis is an Alpha Cygni-type variable star, showing 0.032 magnitude brightness variations with a period of 3.427 days, in Hipparcos data. [10] A light curve for Rho Leonis, plotted from Hipparcos data [11] This is an enormous star with about 20 times the Sun's mass (M ☉) and 28 times the Sun's radius. [6]
ν Leonis, Latinised as Nu Leonis, is a binary star system in the zodiac constellation of Leo. It is faintly visible to the naked eye with an apparent visual magnitude of 5.15; [2] parallax measurements [1] indicate it is around 500 light years away. At this distance, the visual extinction from interstellar dust is 0.33 magnitudes. [11]
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.