NGC 4125NGC 4125 is an elliptical galaxy in the constellation Draco. It was discovered on 4 January 1850 by English astronomer John Russell Hind.SupernovaOne supernova has been observed in NGC 4125. SN 2016coj was discovered by the Lick Observatory Supernova Search, using the Katzman Automatic Imaging Telescope, on 28 May 2016. After detection, it became brighter over the course of several days. It reached magnitude 13, making it the brightest supernova of 2016.