Аннотация:MASTER Global Robotic Net ( Lipunov et al., “MASTER Global Robotic Net”, Advances in Astronomy, 2010, 30L ) observed V4641 Sgr (ATel #13431, ATel #15008) more then 10 years in MASTER- Kislovodsk, -Tavrida, -IAC, -SAAO, -OAFA (monitoring during regular survey).