Tags: Artificialsatellite, Satellite.
Kosmos 553 (Russian: Космос 553 meaning Cosmos 553) known before launch as DS-P1-Yu No.55 was a Soviet satellite which was launched in 1973 as part of the Dnepropetrovsk Sputnik programme. It was a 400-kilogram (880 lb) spacecraft which was built by the Yuzhnoye Design Bureau and was used as a radar calibration target for anti-ballistic missile tests.