U Mon started to fade YYYYMMDD(UT) mag observer 20020108.110 63 (Erwin van Ballegoij) 20020108.548 60 (Taichi Kato) 20020109.047 59 (Sebastian Otero) 20020109.653 62 (Hiroyuki Maehara) 20020110.210 59 (Sebastian Otero) 20020110.625 61 (M. Ogura) 20020110.696 60 (Yasunori Watanabe) 20020111.058 60 (Sebastian Otero) 20020111.544 60 (T. Tsubone) 20020111.569 60 (R. Naito) 20020111.599 60 (Taichi Kato) 20020111.607 61 (Y. Tsuchiyama) 20020112.064 60 (Sebastian Otero) 20020112.510 61 (Taichi Kato) 20020113.210 60 (Sebastian Otero) 20020113.506 61 (Taichi Kato) 20020113.542 60 (T. Tsubone) 20020114.744 61 (M. Ogura) 20020115.053 60 (Sebastian Otero) 20020117.038 61 (Sebastian Otero) 20020117.519 62 (Taichi Kato) 20020118.149 74 (Erwin van Ballegoij) 20020118.538 63 (Y. Atobe) 20020119.050 62 (Stanislaw Swierczynski) 20020119.172 62 (Raquel Yumi Shida) 20020119.492 63 (Taichi Kato) 20020119.637 62 (Y. Tsuchiyama)