SN 2002dn (Type Ic, mag. 18.6) was discovered byastronomer W. D. Li fromUniversity of California at Berkeley via unfiltered KAIT CCD images taken on June 15 and June 17, 2002.[7][8] It was located 8".8 west and 18".3 north of the nucleus.[9] A further inspection done by A. V. Filippenko, R. Chornock and R. J. Foley, using the Shane 3-mreflector atLick Observatory confirmed SN 2002dn was Type Ic, which resembledSN 1987m.[7][8]
SN 2003hy (TypeIIn, mag. 16.6) was discovered by British amateur astronomerTom Boles on September 14, through unfiltered CCD images using a 0.35-m reflector as part of the course done by U.K. Nova/Supernova Patrol.[10][11] SN 2003hy was also discovered by amateur astronomerMark Armstrong who saw it on unfiltered CCD images taken with a 0.35m reflector.[10] It was located 5".5 west and 12".5 north of the nucleus.[12] A 14-minute exposure of SN 2003hy taken on December 28, 2003, shows it is much dimmer than 19.4 magnitude, which the dimmeststars are magnitude 20.[13]
SN 2010iq (Type Ic, mag. 18.2) was discovered by theLick Observatory Supernova Search on October 11, 2010.[14] It was reported by A. Narla, S. B. Cenko, W. Li and A. V. Filippenko from University of California, Berkeley through unfiltered CCD images.[15] It was located 2".8east and 4".4south of the nucleus.[14]
PSN J21542359+1509224 was discovered by Bin Wang and Xing Gao on 13 May 2014.[16] It was located 5".3 east and 0".9 south of the nucleus with a magnitude of 18.3. This supernova had an unknown type.[16]
SN 2022lfa (Type Ic, mag. 19.21) was discovered by the Zwicky Transient Facility on 28 May 2022, using the Palomar 1.2m Oschin telescope on the behalf of K. De fromCaltech.[18][19] On 28 June 2022, astronomers classified it as Type Ic using the3-m Shane telescope at Lick Observatory.[20]
