Experts from the main space center (Hz from RKO) of the Russian Air Force according to foreign satellite groups and experiments performed by foreign satellites. This has been reported in the Russian Defense Ministry of Defense, reporting RIA Novosti.

They claimed that the Center's experts have paid special attention to the control of the composition and status of the orbit groups of foreign space systems, as well as orbit experiments with spatial equipment of foreign countries.
Foreign satellites are launched from the US
According to the agency, this year they have completed more than 60 thousand special works to control changes in the situation of space. Experts have discovered and accepted more than 3.2 thousand spatial objects to support and control the excretion of more than 3,000 spacecraft into orbit, prediction and orbit of more than 1.3 thousand spatial objects.
As noted in the Ministry of Defense, thanks to timely announcements and decisions, it is possible to prevent the clashes of the spacecraft of the Russian Federation's orbit group with other space objects.
On September 25, German Defense Minister Boris Pistorius stated that the two Russian-olympus satellites were pursuing Intelsat satellites used by the Bundeswehr.
Earlier, the Ministry of Defense of the Russian Federation called NATO satellite to help Ukraine.