V2540 Oph sudden fading! YYYYMMDD(UT) mag observer 20020209.478 97 (Robert J. Modic) 20020209.837 95 (Andrew Pearce) 20020210.280 98 (Alexandre Amorim) 20020210.301 96 (Raquel Yumi Shida) 20020210.856 94 (Andrew Pearce) 20020211.308 88 (Raquel Yumi Shida) 20020211.778 87 (Bruce Tregaskis) 20020211.826 8.03Ic (Seiichiro Kiyota) 20020211.826 82 (Andrew Pearce) 20020211.826 87 (Y. Atobe) 20020211.826 8.65V (Seiichiro Kiyota) 20020211.828 9.25B (Seiichiro Kiyota) 20020212.292 87 (Alexandre Amorim) 20020212.456 8.97B (Seiichiro Kiyota) 20020212.769 84 (Bruce Tregaskis) 20020212.815 85 (Y. Atobe) 20020212.824 85p (Minoru Yamamoto) 20020212.830 7.67Ic (Seiichiro Kiyota) 20020212.831 8.37V (Seiichiro Kiyota) 20020213.483 8.29V (Doug West) 20020213.762 88 (Bruce Tregaskis) 20020213.837 85 (Andrew Pearce) 20020214.091 87 (Maciej Reszelski) 20020214.228 87 (Eddy Muyllaert) 20020214.476 8.89V (Doug West) 20020214.478 89 (Robert J. Modic) 20020214.758 90 (Bruce Tregaskis) 20020214.839 90 (Y. Atobe) 20020215.832 96 (Andrew Pearce) 20020215.837 93 (Y. Atobe) 20020216.144 98 (Maciej Reszelski)