BL Lac fading YYYYMMDD(UT) mag observer 20010715.335 139 (M. Simonsen) 20010715.974 137 (E. Muyllaert) 20010715.976 136C (O. Trondal) 20010716.930 142 (M. Verdenet) 20010718.910 140 (M. Verdenet) 20010718.938 138 (E. Muyllaert) 20010720.051 145 (G. Poyner) 20010720.438 141 (M. Verdenet) 20010720.990 147 (F. Pujol) 20010721.976 142C (O. Trondal) 20010722.211 <143 (M. Simonsen) 20010723.042 134 (H. McGee) 20010723.910 146 (M. Verdenet) 20010723.971 140C (O. Trondal) 20010723.974 136 (H. McGee) 20010723.992 141C (D. Rodriguez) 20010724.910 145 (M. Verdenet) 20010725.291 146: (M. Simonsen) 20010725.930 146 (M. Verdenet) 20010725.992 142C (O. Trondal) 20010726.078 147 (G. Poyner) 20010727.295 144 (M. Simonsen) 20010728.046 146 (C. P. Jones) 20010728.880 147 (M. Verdenet)