RY Sgr may have started fading YYYYMMDD(UT) mag observer 20010506.340 69 (C. F. Kurtz) 20010510.131 66 (S. Otero) 20010510.250 66 (C. F. Kurtz) 20010512.139 66 (C. F. Kurtz) 20010512.760 61 (H. Itoh) 20010513.165 66 (C. F. Kurtz) 20010513.203 66 (S. Otero) 20010513.697 6.63V (M. Watanabe) 20010517.142 67 (C. F. Kurtz) 20010517.201 67 (C. F. Kurtz) 20010517.449 68 (P. Williams) 20010517.688 6.71V (M. Watanabe) 20010518.687 6.82V (M. Watanabe) 20010518.756 61 (H. Itoh) 20010519.440 68 (P. Williams) 20010520.166 70: (S. Otero) 20010522.560 72 (P. Williams) 20010524.440 72 (P. Williams) 20010525.440 72 (P. Williams) 20010529.110 74 (S. Otero)