MKN509 recent (cont'd) YYYYMMDD(UT) mag observer 20010824.916 145 (C. P. Jones) 20010827.919 144 (C. P. Jones) 20010904.910 143 (C. P. Jones) 20010908.888 148 (C. P. Jones) 20010922.911 147 (C. P. Jones)