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Some objects originally thought to be deep sky objects and listed in the NGC have been subsequently shown to be ordinary stars, so their inclusion in the catalog is now considered erroneous. [1] This list of stars is based on the "NGC 2000.0" version of the catalog, which lists the stars in its errata, [ 1 ] supplemented with data on each ...
The original New General Catalogue was compiled during the 1880s by John Louis Emil Dreyer using observations from William Herschel and his son John, among others.Dreyer had already published a supplement to Herschel's General Catalogue of Nebulae and Clusters (GC), [2] containing about 1,000 new objects.
NGC 493, also occasionally referred to as PGC 4979 or GC 281, is a barred spiral galaxy in the constellation Cetus. [1] It is located approximately 90 million light-years from Earth and was discovered on December 20, 1786 by astronomer William Herschel. [2]
A number where some but not all prime factors have multiplicity above 1 is neither square-free nor squareful. The Liouville function λ(n) is 1 if Ω(n) is even, and is -1 if Ω(n) is odd. The Möbius function μ(n) is 0 if n is not square-free. Otherwise μ(n) is 1 if Ω(n) is even, and is −1 if Ω(n) is odd.
NGC 4976 is a peculiar elliptical galaxy in the constellation Centaurus. It was detected with a 5" telescope working at 20x magnification by comet hunter Jack Bennett ...
979 785 Canysp: 979 786 Pkeets: 975 787 Nichalp: 975 788 JIP: 974 789 MurielMary: 973 790 03md: 973 791 Agne27: 972 792 67.173.107.96: 972 793 S.Didam: 971 794 Underwaterbuffalo: 970 795 Summonmaster13: 970 796 Phoe: 969 797 Calapez: 967 798 BlameRuiner: 967 799 Alaney2k: 967 800 Alexander Iskandar: 964 801 Jerzy: 961 802 Fitindia: 959 803 ...
A roads in Zone 2 of the Great Britain numbering scheme: 264 List of geological features on Venus: 263 FlexOS: 263 Glossary of video game terms: 263 List of Naruto characters: 261 List of former Maryland state highways (500–599) 261 List of observatory codes: 261 List of diplomatic missions of Russia: 261 Meanings of minor-planet names: 8001 ...
The format of the numbers will be 979 a bcdefghi, where the a digit, 1, 3, 5 or 9, will indicate the charging band, and the remaining digits will be the IPRS subscriber's number. 1, 3 and 5 indicate charge bands 1, 2 and 3, respectively, while 9 will indicate a special charge band. The service is not yet known to be active [citation needed].