V2540 Oph fainter (oscillation) YYYYMMDD(UT) mag observer 20020218.822 103 (Y. Atobe) 20020219.760 98 (Bruce Tregaskis) 20020219.847 100 (Y. Atobe) 20020220.188 99 (Bjorn H. Granslo) 20020220.466 9.68V (Doug West) 20020220.774 98 (Bruce Tregaskis) 20020220.815 98p (Minoru Yamamoto) 20020220.826 103 (Y. Atobe) 20020221.228 96 (Eddy Muyllaert) 20020221.812 94 (Andrew Pearce) 20020222.198 94 (Wolfgang Kriebel) 20020222.812 91 (Seiichi Yoshida) 20020222.814 93p (Minoru Yamamoto) 20020222.817 92p (Katsumi Haseda) 20020222.844 94 (Hitoshi Itoh) 20020224.198 99 (Eddy Muyllaert) 20020224.817 104p (Minoru Yamamoto) 20020227.235 104 (Eddy Muyllaert)