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Deneb |
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Deneb (dĕn`ĕb), brightest star in the constellation Cygnus Cygnus [Lat.,=the swan], northern constellation located SE of Draco and NW of Pegasus. It was depicted as a bird by most ancient cultures. It is sometimes called the Northern Cross because five of its brightest stars form a huge Latin cross.
..... Click the link for more information. ; Bayer designation Alpha Cygni; 1992 position R.A. 20h41.2m, Dec. +45°15'. It is a white supergiant of spectral class spectral class, in astronomy, a classification of the stars by their spectrum and luminosity. In 1885, E. C. Pickering began the first extensive attempt to classify the stars spectroscopically. ..... Click the link for more information. A2 Ia; its intrinsic brightness (about 60,000 times as luminous as the sun) is the greatest of all the bright stars. Thus, even though it is also one of the most distant bright stars, being about 1,600 light-years from the earth, it has an apparent magnitude magnitude, in astronomy, measure of the brightness of a star or other celestial object. The stars cataloged by Ptolemy (2d cent. A.D.), all visible with the unaided eye, were ranked on a brightness scale such that the brightest stars were of 1st magnitude and the ..... Click the link for more information. of 1.25, making it one of the 20 brightest. Its name is from the Arabic meaning "hen's tail," referring to its position in the constellation. Deneb [′den‚eb] (astronomy) A white star of spectral classification A2-Ia in the constellation Cygnus; the star α Cygni. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Yesterday: Gaschem Phoenix, Stade; Eems Transporter, Vlaardingen; Primula, Brofjorden; Trout, Grangemouth; Deneb J, Rotterdam; Containerships VII, Gdansk; Heinrich Essberger, Stade; Australian Spirit, Rotterdam; Norstream, Europoort; Lady Hilde, Port Jerome; Euro Squall, Felixstowe. [ILLUSTRATION OMITTED] For the life of the planned four-and-a-half-year mission, Kepler will be aimed at the same 10 x 10 degree spot in the sky (between Deneb in Cygnus, and Vega in Lyra), continuously measuring the brightness of over 100 000 candidate stars, searching for planets that transit them. Taken together, these three stars, Altair, Deneb, and Vega, form a large triangle, easily discernable in the Tucson sky with the naked eye, The observatory''s Weather Program was created to allow visitors access to the site, even when conditions are not conducive to watching the skies. |
Deneb |
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