| Event type | Supernova  |
|---|---|
| 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]
SN 1940B is one of the five supernovae discovered in 1940, the other being SN 1940A, SN 1940C, SN 1940D and SN 1940E.
References
- ↑ "List of Supernovae". IAU Central Bureau for Astronomical Telegrams. Retrieved 12 December 2016.
- ↑ Albert G. Petschek, ed. (2012). Supernovae. Springer Science & Business Media. p. 60. ISBN 978-1461232865.
External links
- Light curve Archived 2017-10-23 at the Wayback Machine on the Open Supernova Catalog
- SN 1940B at SIMBAD
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