Kosmos 380 ( meaning Cosmos 380), known before launch as DS-P1-Yu No.26, was a Soviet satellite which was launched in 1970 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.
Launch Kosmos 380 was successfully launched into low Earth orbit on 24 November 1970, with the rocket lifting off at 10:59:56 UTC. The launch took place from Site 133/1 at the Plesetsk Cosmodrome, and used a Kosmos-2I 63SM carrier rocket. Upon reaching orbit, it was assigned its Kosmos designation, and received the International Designator 1970-100A.
Orbit Kosmos 380 was the thirty-seventh of seventy nine DS-P1-Yu satellites to be launched, and the thirty-fourth of seventy two to successfully reach orbit. It was operated in an orbit with a perigee of , an apogee of , 81.9 degrees of inclination, and an orbital period of 100.6 minutes. It remained in orbit until it decayed and reentered the atmosphere on 17 June 1971.
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