Kosmos 633

Kosmos 633, also known as DS-P1-Yu No.71, was a Soviet satellite which was launched in 1974 as part of the Dnepropetrovsk Sputnik programme. It was a spacecraft, which was built by the Yuzhnoye Design Bureau, and was used as a radar calibration target for anti-ballistic missile tests.
The launch of Kosmos 633 occurred at 11:05 UTC on 27 February 1974, and resulted in the satellite successfully reaching low Earth orbit. The launch took place from Site 133/1 at the Plesetsk Cosmodrome, and used a Kosmos-2I 63SM carrier rocket. Upon reaching orbit, the satellite was assigned its Kosmos designation, and received the International Designator 1974-010A. The North American Aerospace Defense Command assigned it the catalogue number 07187.
Kosmos 633 was the sixty-eighth of seventy nine DS-P1-Yu satellites to be launched, and the sixty-second of seventy two to successfully reach orbit. It was operated in an orbit with a perigee of, an apogee of, 70.9 degrees of inclination, and an orbital period of 91.9 minutes. It remained in orbit until it decayed and reentered the atmosphere on 4 October 1974.