SN 2001B bright 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) 20010113.762 146 (J. Ripero) 20010116.021 145R (M. Fiaschi)