Kosmos_453
Kosmos 453 (Russian: Космос 453 meaning Cosmos 453), known before launch as DS-P1-Yu No.44, was a Soviet satellite which was launched in 1971 as part of the Dnepropetrovsk Sputnik programme. It was a 325-kilogram (717 lb) spacecraft, which was built by the Yuzhnoye Design Bureau, and was used as a radar calibration target for anti-ballistic missile tests.[1]