| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,508,102,031 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
Deneb |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.06 sec. |
|
Deneb (dĕn`ĕb), brightest star in the constellation Cygnus Cygnus (sĭg`nəs) [Lat.,=the swan], northern constellation located SE of Draco and NW of Pegasus. ..... 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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | ? References in periodicals archive | |
|---|---|---|
As their first external furniture product range, the Deneb Outdoor system by Stua derives from the Deneb table, designed by Jesus Gasca. Isidro Bosche and Deneb Karentz of San Francisco University have discovered that starfish embryos grow abnormally when exposed to high levels of ultraviolet rays in the spring, when the Antarctic ozone hole is at its worst, and similar effects have been studied in icefish eggs and the seedlings of some plant species. Using the three-dimensional, computer-driven simulation software, Quest, by Deneb Robotics, Inc. |
| Encyclopedia |
| Free Tools: |
For surfers:
Browser extension |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|