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 4125
NGC 4125 is an elliptical galaxy in the constellation Draco. It was discovered on 4 January 1850 by English astronomer John Russell Hind. On 28 May 2016, the telescope KAIT discovered the supernova SN 2016coj (type Ia, mag. 14.8) in this galaxy. After detection, it became brighter over the course of several days. It reached magnitude 13, making it the brightest supernova of 2016.
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Wikipedia Page: NGC 4125
NGC 4125 at In-The-Sky website