Online Encyclopedia

SAGITTA (" the arrow " or " dart ")

Online Encyclopedia
Originally appearing in Volume V23, Page 1003 of the 1911 Encyclopedia Britannica.
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SAGITTA (" the arrow " or " dart "), in astronomy, a constellation of the northern hemisphere, mentioned by Eudoxus (4th century B.C.) and Aratus (3rd century B.e.), and catalogued by Ptolemy, Tycho Brahe and Hevelius, who each described 5 stars. The fable was that this constellation was one of the arrows with which Hercules killed the vulture which gnawed the liver of Prometheus. S. Sagittae is a short period variable, period 8.38 days, range in magnitude 5.6 to 6.4.
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