The incident involving the Russian-made Angosat-1 followed a similar one in November when Russia lost contact with a weather satellite
Tens of thousands of people marched in central Moscow on Sunday to honour slain opposition leader Boris Nemtsov, who was gunned down near the Kremlin.
Triple suicide strikes in Chechnya left nine people dead and over 20 injured as the Russian Muslim region celebrated the end of Ramadan.
Prosecutors on Tuesday were to present new charges against Russia’s former richest man Mikhail Khodorkovsky.