Comment on SN.... : In double galaxy system. The probable host galaxy is "NGC 1097" = "MCG-05-07-024" = "PGC 10488". Also see the opinion of A. V. Filippenko and R. Chornock in IAU Circ. 8042, 2003.
Comment on Gal... : N 1097
Host Galaxy information (for SNe discovered since January 2015):