2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/210549Our observations of the first reported outburst of SDSS J081321.91+452809.4 during 2008 April show that this cataclysmic variable is a dwarf nova. The outburst amplitude was at least 3.1 magnitudes and the outburst appears to have been rather short-lived at around 3 days with a rapid decline to quiescence of 0.73 mag/day.5 pages, 4 Figures Accepted for publication in the Open European Journal on Variable StarsAstrophysicstext