Gamma Delphinus, the star marking the dolphin's nose, is a close-together double star with one component a greenish color. Those funny appellations are actually the name of 19th-century astronomer Nicolaus Venator spelled backward. Delphinus' brightest two stars are bluish Sualocin, at the top of its head, and whitish Rotanev, at the nape of its neck. Look for its five 4th-magnitude stars shining just to the lower left (or celestial southeast) of the line connecting the bright stars Deneb and Altair.Īccording to Greek legend, Poseidon, god of the seas, was assisted in a matter of the heart by a friendly dolphin, so he rewarded it with a place of honor in the heavens. (Image credit: Starry Night Software) (opens in new tab)ĭuring the evening in early October, the small constellation of Delphinus is positioned high in the southern sky.
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