Forecasting of Space Vehicles Approaches to Space Debris in Geostationary Orbits Area

The features of uncontrolled space objects motion in geostationary area are studied. The analytical dependencies for average daily drift calculation and values of longitudes of subsatellite object points moving in the libration mode. The values of libration periods, of minimum and maximum longitudes for subsatellite points of geostationary space objects and forecasting dates of maximum approaches for space vehicle "Electro-L" to space objects and minimum distances between them are presented.It Is shown that the value of dangerous approaches for geostationary space vehicles to space debris fragments doesn't exceed 2-3 times per month.