IC 755

IC 755, also known as NGC 4019, is a barred [spiral galaxy]. It lies about 60 million light-years away in the northern constellation of Coma Berenices. It is a member of the Virgo Cluster.
In 1999 a star within IC 755 was seen to explode as a supernova and named SN 1999an. Supernovae like SN 1999an are classified as Type [II supernova|Type II] and they are dramatic events that mark the end of the lives of massive stars. The supernova was discovered by the Beijing Astronomical Observatory Supernova Survey.