2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/10800We report the discovery of a candidate supernova in the ultraluminous galaxy IRAS 12112+0305 during April/May 1995. This would be the first supernova discovered in an ultraluminous galaxy with L_IR > 10^12 L_sun, although supernovae have been discovered in the slightly less extreme starburst galaxy NGC 3690. If this is a supernova, our very limited observations suggest that it is a Type II.3 pages, 2 figs, Postscript, A&A research note in pressAstrophysicstext