MOSCOW. May 23 (Interfax) - The loss of GLONASS-M satellites in December 2010 was due to an excess amount of oxidizer in the upper stage, Russian Investigative Committee spokesman Vladimir Markin told Interfax.
"The 1.5 tonnes of oxidizer, charged into the upper stage in excess of the required amount caused a crash and loss of three GLONASS-M satellites," Markin said.
"The situation was due to an error in the formula of calculating the amount of liquid oxygen made by the Energia rocket and space corporation," he said.