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AQUILA

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Originally appearing in Volume V02, Page 249 of the 1911 Encyclopedia Britannica.
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AQUILA , in See also:

astronomy, the " See also:Eagle," sometimes named the " See also:Vulture," a See also:constellation of the See also:northern hemisphere, mentioned by See also:Eudoxus (4th cent. B.C.) and See also:Aratus (3rd cent. B.C.). See also:Ptolemy catalogued nineteen stars jointly in this constellation and in the constellation See also:Antinous, which was named in the reign of the See also:emperor See also:Hadrian (A.D. 117-138), but sometimes, and wrongly, attributed to Tycho See also:Brahe, who catalogued twelve stars in Aquila and seven in Antinous; See also:Hevelius determined twenty-three stars in the first, and nineteen in the second. The most brilliant See also:star of this constellation, a-Aquilae or Altair, has a See also:parallax of o.23", and consequently is about eight times as See also:bright as the See also:sun; n-Aquilae is a See also:short-See also:period variable, while Nova Aquilae is a " temporary " or " new star, discovered by Mrs See also:Fleming of Harvard in 1899.

End of Article: AQUILA

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