Event type | Supernova |
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SN.IIP | |
Date | 5 May 1940 |
Constellation | Coma Berenices |
Right ascension | 12h 50m 33.0s |
Declination | +25° 32′ 12″ |
Peak apparent magnitude | 12.8 |
SN 1940B was a supernova discovered on 5 May 1940 in the galaxy NGC 4725 in Coma Berenices. It had a magnitude of 12.8[1] and became the first observed type II supernova.[2][clarification needed]
SN 1940B is one of the five supernovae discovered in 1940, the other being SN 1940A, SN 1940C, SN 1940D and SN 1940E.
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