2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/2536We report on initial progress in a program of optical identification of supersoft X-ray sources in M31, pursued mainly with the WIYN telescope. We propose the identification of one supersoft X-ray source with a variable star, which we believe to have been a classical or recurrent nova in outburst in September 1990. The nova remnant must have been still a supersoft X-ray sources 5 years after this observation, when it was observed with ROSAT.1 .tex file, 1.sty file, 1 .ps file (figure)Astrophysicstext