DM CMa outburst DM CMa is undergoing a bright outburst (the brightest one was in 2009 March, 14.0 mag) YYYYMMDD(UT) mag observer 20111205.721 <147 (Rod Stubbings) 20111227.469 146 (Rod Stubbings) 20111228.510 142 (Rod Stubbings) 20111229.519 141 (Rod Stubbings)