Delphinus
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 (10 stars), and Hevelius (14 stars), y Delphini is a double star: a yellowish of magnitude 4, and a bluish of magnitude 5.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)