The DS-P1 series of satellites was used to calibrate space surveillance and early warning radars. June 30, 1962 at 16:00 UTC · Launch Successful Kosmos-2I — Soviet Space Program, to Low Earth Orbit Mayak-2, Kapustin Yar, Russian Federation The world's 177th orbital launch attempt, and 35th of 1962. Data: Launch Library 2, The Space Devs. Image via The Space Devs.