V4641 Sgr recent optical data YYYYMMDD(UT) mag observer 20020618.078 134 (Berto Monard) 20020618.433 134 (Rod Stubbings) 20020618.774 134 (Rod Stubbings) 20020620.419 134 (Rod Stubbings) 20020624.396 <116 (Rod Stubbings) 20020626.474 <130 (Rod Stubbings)