Kosmos 19 (Russian: Космос 19 meaning Cosmos 19), also known as DS-P1 No.3 was a prototype radar target satellite for anti-ballistic missile tests, which was launched by the Soviet Union in 1963 as part of the Dnepropetrovsk Sputnik programme. Its primary mission was to demonstrate the necessary technologies for radar tracking of spacecraft, which would allow future satellites to function as targets.