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High-resolution film-return Zenit reconnaissance satellite
There are no mission or payload details available for this launch.
Radar calibration satellite
Civilian navigation satellite equivalent to the purely military Parus
Ocean surveillance satellite using passive ELINT devices
Optical film-return reconnaissance satellite
The Parcae satellites were passive ELINT satellites. MSD satellites were dispensers of triplets of ocean surveillance satellites.
One of two experimental communications satellites.
Geostationary communications satellite for military and governmental puposes