Uzhgorod State University, Uzhgorod, UKRAINE
Two-channel photoelectric photometer was made in 1971 in Uzhgorod State University, which was intended for calculatting of brightness of law-orbital satellites. And from that time the observations for satellites in the integral light were regulary conducted on it. In 1989 new two-channel photoelectric photometer, working in the system B,V Jonson-Morgan, was made. Large experimental material was collected, the curves of 154 satellites during about 2500 observations were obtaind. In particular, by 790 observations of 46 satellites, the periods of visible change of the brightness of the objects were calculated. The maximal accuracy of the determination of the period was 0.001-0.003 second for the object 86061. The curves of brightness were used for different tasks. They may be given consumers who are interested.