SN 2014J is a type-Iasupernova in Messier 82 (the 'Cigar Galaxy', M82) discovered in mid-January 2014. It is the closest type-Ia supernova discovered in the past 42 years. It was discovered accidentally during an undergraduate teaching session at University of London Observatory.
SN 2014J is currently the subject of an intense observing campaign by
professional astronomers, and is bright enough to be seen by amateur astronomers. On 31 January 2014 SN2014J stopped brightening, reaching its peak brightness at magnitude 10.5.