Outburst of V551 Sgr Rod Stubbings reports the suspected SU UMa-type large-amplitude dwarf nova V551 Sgr is in outburst (vsnet-obs 8052, http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-obs/msg08052.html). YYMMDD(UT) mag observer 971023.449 <140 (R. Stubbings) 971024.494 140 (R. Stubbings) The quiescence identification being still uncertain, follow-up observations including accurate astrometry are encouraged. Regards, Taichi Kato