SN 2001B at maximum YYYYMMDD(UT) mag observer 20001224.540 <183C (Beijing Astronomical Observatory (from IAUC)) 20010103.610 155:C (Beijing Astronomical Observatory (from IAUC)) 20010104.569 152:C (Beijing Astronomical Observatory (from IAUC)) 20010106.417 155C (K. Kadota) 20010108.458 14.89CR (Y. Sano) 20010108.863 145C (O. Trondal) 20010112.798 147 (J. Ripero) 20010112.978 144C (D. Rodriguez) 20010113.032 144CR (C. Rinner) 20010113.762 146 (J. Ripero) 20010114.828 144:C (J. Hambsch) 20010116.021 145R (M. Fiaschi)