SN 2011by

SN 2011by was a supernova in NGC 3972. It was a type Ia supernova, discovered by Zhangwei Jin and Xing Gao (China). SN 2011by is about 5.3" east and 19.1" north of the center of NGC 3972.^[1][2]

Event typeSupernova 

DateApril 26, 2011 (UTC)

ConstellationUrsa Major

Right ascension11^h 55^m 45.56^s[2]

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SN 2011by

Image from Richie Jarvis
Event type	Supernova
Type Ia[1]
Date	April 26, 2011 (UTC)
Constellation	Ursa Major
Right ascension	11h 55m 45.56s[2]
Declination	+55° 19′ 33.8″[1]
Epoch	J2000
Redshift	0.003402 ±5e-06
Host	NGC 3972[1]
Peak apparent magnitude	< 12[1]
Other designations	SN 2011by
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