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DELPHINUS (" THE DOLPHIN ")
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DELPHINUS (" THE DOLPHIN "), in astronomy, a constellation of the northern hemisphere, mentioned by Eudoxus (4th century B.C.) and Aratus (3rd century B.C.); and catalogued by Ptolemy (10 stars), Tycho Brahe (to stars), and Hevelius (14 stars). y Delphini is a double star: a yellowish of magnitude 4, and a bluish of magnitude 5.