CH Cyg brightening A sudden brightening has been reported by several observers. YYYYMMDD(UT) mag observer 20010918.503 78 (T. Kato) 20010918.535 81 (Y. Atobe) 20010918.878 86 (A. Sonka) 20010919.030 80 (M. Reszelski) 20010919.424 80 (Y. Sugai) 20010919.501 78 (T. Kato) 20010919.863 81 (G. Comello) 20010919.980 80 (M. Reszelski) 20010920.098 77 (E. van Ballegoij) 20010920.503 78 (T. Kato) 20010921.800 80 (R. Ricza) 20010922.415 80 (Y. Watanabe) 20010922.499 78 (T. Kato) 20010922.512 79 (Y. Sugai) 20010922.562 80 (H. Maehara) 20010922.572 79 (S. Takahashi) 20010922.800 73 (Hartmut Goldhahn) 20010922.878 86 (A. Diepvens) 20010922.951 81 (E. Muyllaert) 20010923.466 79 (Y. Watanabe) 20010923.512 78 (T. Kato) 20010923.519 80 (H. Maehara) 20010923.540 76 (Y. Atobe) 20010923.603 72 (H. Someya) 20010923.819 80 (E. Muyllaert) 20010924.482 78 (Y. Sugai) 20010924.499 79 (T. Kato) 20010924.528 80 (M. Nakatani) 20010924.781 82 (G. Comello) 20010925.816 80 (E. Muyllaert) 20010925.846 80 (M. Reszelski) 20010926.517 79 (T. Kato) 20010927.805 79 (E. Muyllaert) 20010927.810 80 (B. H. Granslo) 20010928.490 75 (H. Someya) 20010928.508 79 (T. Kato) 20010928.531 77 (Y. Atobe) 20010928.873 82 (G. Comello) 20010929.119 81 (R. J. Bouma) 20010929.894 76 (G. Poyner) 20011001.078 76 (E. van Ballegoij) 20011001.503 79 (T. Kato) 20011001.819 80 (A. Sonka) 20011002.635 78 (Y. Watanabe) 20011003.585 77 (S. Takahashi) 20011003.783 82 (G. Comello) 20011003.850 80 (E. Muyllaert) 20011004.757 78 (T. Lange) 20011005.794 80 (R. J. Bouma) 20011006.542 77 (M. Nakatani) 20011006.889 80 (E. Muyllaert) 20011007.483 75 (Y. Sugai) 20011007.799 79 (A. Sonka) 20011008.812 80 (E. Muyllaert) 20011008.815 81 (G. Comello) 20011009.785 79 (E. Muyllaert) 20011009.819 85 (E. Morillon) 20011009.878 79 (M. Reszelski) 20011010.872 79 (A. Sonka) 20011010.880 79 (A. Diepvens) 20011011.522 76 (Y. Atobe) 20011011.828 79 (E. Muyllaert) 20011012.501 70 (M. Ooishi) 20011012.549 80 (T. Kato) 20011013.506 80 (T. Kato) 20011013.560 75 (H. Someya) 20011014.472 75 (T. Kato) 20011014.533 77 (M. Nakatani) 20011014.540 69 (Y. Atobe) 20011014.583 71 (K. Nakai)