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Leo In Astronomy

LEO IN ASTRONOMY (THE LION), in astronomy, the fifth sign of the zodiac (?..), denoted by the symbol i2. It is also a constellation, mentioned by Eudoxus (4th century B.C.) and Aratus (3rd century B.C.). According to Greek mythology this constellation s the Nemean lion, which, after being killed by Hercules, was raised to the heavens by Jupiter in honour of Hercules. A part of Ptolemy's Leo is now known as Coma Berenices (q.v.). a ^eonis, also known as Cor Leonis or the Lion's Heart, Regulus, Basilicus, etc., is a very bright star of magnitude 1-23, and parallax 0-02", and proper motion 0-27" per annum. 7 Leonis is a very fine orange-yellow binary star, of magnitudes 2 and 4, and >eriod 400 years, t Leonis is a binary, composed of a 4th magni.ude pale yellow star, and a 7th magnitude blue star. The -.EONIDS are a meteoric swarm, appearing in November and radiating from this constellation (see METEOR).

Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)

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