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 7031
NGC 7031 is a small open cluster located in the Cygnus constellation. It was discovered by German-British astronomer William Herschel on September 21, 1788. It is located at a distance of about 2,934 light-years (900pc) from the Sun and 29,000 light-years from the Galactic Center.
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Wikipedia Page: NGC 7031
NGC 7031 at In-The-Sky website