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 6122
NGC 6122 is a spiral galaxy located around 484 million light-years away in the constellation Corona Borealis. NGC 6122 was discovered on May 6, 1886 by the astronomer Guillaume Bigourdan, and its diameter is 211,000 light-years. NGC 6122 is not known to have much star-formation, and does not have an active galactic nucleus. NGC 6122 has been the host of one supernova so far: SN 2003ge. It was discovered on June 21, 2003 by astronomers Tim Puckett and Alex Langoussis. It was located 8".8 west and 0".1 north of the nucleus. The supernova was Type Ia.
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Wikipedia Page: NGC 6122
NGC 6122 at In-The-Sky website