SN2001ay up to now YYYYMMDD(UT) mag observer 20010404.400 <185C (KAIT (from IAUC)) 20010418.399 169:C (KAIT (from IAUC)) 20010419.199 170:C (M. Schwartz) 20010420.940 164CR (D. Lefoulon) 20010421.982 15.87CR (R. Ferrando) 20010422.103 165CR (J. M. Llapasset) 20010422.917 162C (O. Trondal) 20010423.430 167V (Jha et al. (from IAUC)) 20010423.949 166C (D. Rodriguez) 20010424.903 165CR (R. Goncalves) 20010425.221 164CR (D. Dillinger) 20010425.899 16.40C (D. Rodriguez) 20010426.949 163CR (R. Roy) 20010427.583 16.42CR (Y. Sano) 20010427.954 151C (Zs. Kereszty) 20010428.078 163CR (J. M. Llapasset) 20010428.967 16.60C (D. Rodriguez) 20010428.985 164CR (G. Masi) 20010429.125 161C (F. M. Ewalt) 20010501.496 16.48CR (Y. Sano) 20010502.665 16.50CR (Y. Sano) 20010503.244 166CR (D. Dillinger)