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    "source_title": "Encyclopaedia Britannica (1911)",
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    "chunk_id": "1911:aquila:3cf9d8dc3d31",
    "title": "AQUILA",
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    "verified_text": "aquila, in astronomy, the \"eagle,\" sometimes named the \"vulture,\" a constellation of the northern hemisphere, mentioned by eudoxus (4th cent. b.c.) and aratus (3rd cent. b.c.). ptolemy catalogued nineteen stars jointly in this constellation and in the constellation _antinous_, which was named in the reign of the emperor hadrian (a.d. 117-138), but sometimes, and wrongly, attributed to tycho brahe, who catalogued twelve stars in aquila and seven in antinous; hevelius determined twenty-three stars in the first, and nineteen in the second. the most brilliant star of this constellation, [alpha]-_aquilae_ or altair, has a parallax of 0.23\", and consequently is about eight times as bright as the sun; [eta]-_aquilae_ is a short-period variable, while _nova aquilae_ is a \"temporary\" or \"new\" star, discovered by mrs fleming of harvard in 1899.",
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