V503 Cyg superoutburst This SU UMa-type dwarf nova is apparently undergoing a superoutburst as indicated by the following observations. The object is still bright tonight. YYMMDD(UT) mag observer 991210.735 <142 (E. Muyllaert) 991211.441 <180C (Ouda team) 991212.490 <170C (Ouda team) 991213.874 <146 (G. Poyner) 991214.394 <175C (Ouda team) 991214.726 <142 (E. Muyllaert) 991215.398 <175C (Ouda team) 991216.405 <175C (Ouda team) 991217.824 <146 (G. Poyner) 991219.415 13.81C (Ouda team) 991219.803 138 (G. Poyner)