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The New General Catalogue of Nebulae and Clusters of Stars (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, including galaxies, star clusters and emission nebulae.
GSC — Guide Star Catalog. GSC2 / GSC II — Guide Star Catalog II; GSPC — Guide Star Photometric Catalog. GSPC2 — Guide Star Photometric Catalog, 2nd; Gsh — J. Glaisher (double stars) GΣ — G. Struve (double stars) Gtb — K. Gottlieb (double stars) Gui — J. Guillaume (double stars) Gum — Gum catalog of emission nebulae
The nuclei of the galaxies had a blue colour, associated to stars in the classes from O to A. This blue core did not match the rest of the galaxy. The spectrum in detail tends to show a continuum that Markarian concluded was produced non-thermally. Most of these have emission lines and are characterized by highly energetic activity.
Cape Photographic Catalogue; Carte du Ciel; Catalog of 5,268 Standard Stars Based on the Normal System N30; Catalog of Components of Double and Multiple Stars; Catalog of Nearby Habitable Systems; Catalog of Stellar Identifications; Catalogue of rotational velocities of the stars; Catalogue of Spectroscopic Binary Orbits; Catalogues of ...
Indiana star QB Kurtis Rourke, a 2025 NFL Draft prospect, will undergo ACL revision surgery Wednesday, per his agent Casey Muir at @octagonfootball.
[1] [2] It contains measurements of 17,180 double stars north of declination −30°. Entries in this catalogue are generally referred to by an index number prefixed with the letters ADS . The catalog was a successor to the Burnham Double Star Catalogue and was based on observations compiled by Sherburne Wesley Burnham from 1906 to 1912, and by ...
The Troubled-Teen Industry Has Been A Disaster For Decades. It's Still Not Fixed.
The Caldwell catalogue is an astronomical catalogue of 109 star clusters, nebulae, and galaxies for observation by amateur astronomers. The list was compiled by Patrick Moore as a complement to the Messier catalogue .