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 5920
NGC 5920 is a large lenticular galaxy located in the Serpens constellation. Discovered on March 30, 1887, by American astronomer Lewis Swift, NGC 5920 is 711 million light-years distant from planet Earth. It is a narrow-line radio galaxy and about 300,000 light-years in diameter.
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Wikipedia Page: NGC 5920
NGC 5920 at In-The-Sky website