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nebula catalog
subject			fact

nebula catalog	has object type nebula
	is a kind of astronomical catalog

Kinds of nebula catalog :

• gaseous nebula catalog (2 facts)
• Messier catalog (5 facts) - is an instance of nebula catalog, Designation of objects in the Messier Catalog of nebulae, star clusters, and galaxies, published in the Eighteenth Century., List of the locations in the sky of more than 100 galaxies and nebulae, compiled by Charles Messier between 1760 and 1784. Some designations he originated are still used in identification; M1 is the Crab Nebula (in Taurus)., One of the earliest catalogues of nebulous-appearing astronomical objects, compiled in 1781 by the French astronomer Charles Messier. Messier's catalogue included many objects that were later realized to be galaxies.
• New General Catalogue (3 facts) (NGC) - A catalogue of 7840 nebulae, star clusters, and galaxies that was published in 1888 by John Dreyer.
• planetary nebula catalog (2 facts)