The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is a catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, known as the NGC objects. It is one of the largest comprehensive catalogues, as it includes all types of deep space objects, including galaxies, star clusters, emission nebulae and absorption nebulae.
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NGC 956
NGC 956 is an asterism in the constellation Andromeda. The object was found on December 23, 1831, by the British astronomer John Herschel, who originally believed the object to be an open cluster. However, an analysis in 2008 led to the conclusion that this "object" was merely a chance alignment of stars that only appear to be an open cluster.
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Wikipedia Page: NGC 956
NGC 956 at In-The-Sky website