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 871
NGC 871 is a barred spiral galaxy in the Aries constellation. Its discovery and first description was realized by William Herschel on October 14, 1784 and the findings made public through his Catalogue of Nebulae and Clusters of Stars in 1786. By using the galaxies' radial velocities and distances as a grouping factor, astronomers assign this galaxy to LGG (Lyon Groups of Galaxies) 53 along with 8 other members (UGC 1693, UGC 1761, NGC 876, NGC 877, UGC 1817, IC 1791 and UGC 1773).
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Wikipedia Page: NGC 871
NGC 871 at In-The-Sky website