MKN509 recent (cont'd) YYYYMMDD(UT) mag observer 20000801.974 146 (C. P. Jones) 20000805.988 146 (C. P. Jones) 20000811.982 144: (C. P. Jones) 20000828.955 145 (C. P. Jones) 20000830.953 147 (C. P. Jones)