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bright star in the constellation Aquila, 16c., from Arabic Al Nasr al Tair "the Flying Eagle," from tair, participle of tara "it flew."
A bright white star in the constellation Aquila. Altair is a main-sequence star in the Hertzprung-Russell diagram. It is the 12th brightest star in the night sky, with an apparent magnitude of 0.77. Altair, along with Vega and Deneb, form the Summer Triangle asterism. Scientific name: Alpha Aquilae.