Almaz-2

Russian civilian surveillance radar satellite. Study 1995. Plans for an even more sophisticated and capable civilian Almaz 2 spacecraft were made in the early 1990's. Almaz 2's payload mass of 6.

5 metric tons would be powered by solar arrays with a maximum beginning-of-life average power rating of 3.8 kW. More than three metric tons of propellants would be available for a mission duration of up to five years at an altitude of 600 km.