NGC 7003

NGC 7003 is a spiral galaxy around 220 million light-years from Earth in the constellation Delphinus. NGC 7003 has an estimated diameter of 80,800 light-years. The galaxy was discovered by German astronomer Heinrich Louis d'Arrest on August 26, 1864. There also has been at least one supernova observed in NGC 7003.
SN2011dk.
On May 12, 2011 a Type II supernova designated as SN2011dk was discovered in NGC 7003.