chi Cyg brightening YYMMDD(UT) mag observer 980802.919 108 (G. Comello) 980804.867 109 (A. Diepvens) 980805.983 104 (G. Poyner) 980807.900 107 (G. Comello) 980807.930 109 (B. H. Granslo) 980809.855 106 (A. Diepvens) 980811.963 104 (G. Poyner) 980812.910 107 (G. Comello) 980814.915 104 (A. Diepvens) 980815.930 107 (B. H. Granslo) 980816.567 97 (H. Maehara) 980816.880 106 (G. Comello) 980816.940 103 (E. Broens) 980817.000 101 (T. Lange) 980819.467 97 (S. Takahashi) 980819.606 97 (K. Kanatsu) 980819.910 97 (M. Reszelski) 980819.983 102 (T. Lange) 980821.488 96 (S. Takahashi) 980822.969 100 (A. Diepvens) 980822.971 101 (G. Poyner) 980823.880 97 (M. Reszelski) 980825.547 96 (H. Maehara) 980825.940 102 (G. Comello) 980826.050 102 (B. H. Granslo) 980826.626 96 (H. Someya) 980827.930 96 (M. Reszelski) 980828.603 93 (K. Kanatsu) 980828.851 100 (A. Diepvens) 980829.919 96 (M. Reszelski) 980831.030 99 (G. Comello) 980831.942 97 (T. Lange) 980901.547 104 (M. Hiraga) 980901.969 95 (M. Reszelski) 980903.119 97 (B. H. Granslo) 980903.605 94 (S. Takahashi) 980904.060 95 (M. Reszelski) 980905.960 94 (G. Comello)