Kosmos 440

Kosmos 440 (Космос 440 meaning Cosmos 440), also known as DS-P1-I No.10 was a satellite which was used as a radar target for anti-ballistic missile tests. It was launched by the Soviet Union in 1971 as part of the Dnepropetrovsk Sputnik programme.

Launch
It was launched aboard a Kosmos-2I 63SM rocket, from Site 133/1 at Plesetsk. The launch occurred at 10:30:00 UTC on 24 September 1971.

Orbit
Kosmos 440 was placed into a low Earth orbit with a perigee of 272 km, an apogee of 788 km, 70.9 degrees of inclination, and an orbital period of 95.2 minutes. It decayed from orbit on 29 October 1972.

Kosmos 440 was the eleventh of nineteen DS-P1-I satellites to be launched. Of these, all reached orbit successfully except the seventh.