![]() First image: Messier 82 on 10 December 2013. Second image: The same view on 22 January 2014. The position of the supernova is marked. | |
Event type | Supernova ![]() |
---|---|
SN.Ia ![]() | |
Right ascension | 9h 55m 42.217s[1] |
Declination | 69° 40′ 26.56″[1] |
Epoch | J2000 |
Distance | 11,500,000 ly (3,500,000 pc) |
Host | Messier 82 |
Progenitor | unknown |
Notable features | Closest Type Ia for 40 years |
Peak apparent magnitude | 10.1[2] |
Other designations | SN 2014J |
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SN 2014J was a type-Ia supernova in Messier 82 (the 'Cigar Galaxy', M82) discovered in mid-January 2014.[3] It was the closest type-Ia supernova discovered for 42 years, and no subsequent supernova has been closer as of 2023[update]. The supernova was discovered by chance during an undergraduate teaching session at the University of London Observatory. It peaked on 31 January 2014, reaching an apparent magnitude of 10.5.[4] SN 2014J was the subject of an intense observing campaign by professional astronomers and was bright enough to be seen by amateur astronomers.
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