V551 Sgr outburst The dwarf nova V551 Sgr is reported to be undergoing one of its rare outbursts. The supposed quiescent identification suggests a large outburst amplitude (approx. 6 mag). Accurate astrometry and CCD time-series photometry are strongly encouraged. YYMMDD(UT) mag observer 980924.453 <144 (R. Stubbings) 981010.480 140 (R. Stubbings) 981010.509 140 (R. Stubbings) Regards, Taichi Kato