Kosmos 204

Kosmos 204 (Космос 204 meaning Cosmos 204), also known as DS-P1-I No.3 was a satellite which was used as a radar target for anti-ballistic missile tests. It was launched by the Soviet Union in 1968 as part of the Dnepropetrovsk Sputnik programme. and had a mass of 400 kg.

It was launched aboard a Kosmos-2I 63SM rocket, from Site 133/1 at Plesetsk. The launch occurred at 18:28:00 GMT on 5 March 1968.

Kosmos 204 was placed into a low Earth orbit with a perigee of 204 km, an apogee of 844 km, an inclination of 70.0°, and an orbital period of 95.9 minutes. It decayed from orbit on 2 March 1969.

Kosmos 204 was the third of nineteen DS-P1-I satellites to be launched. Of these, all reached orbit successfully except the seventh, launched out of sequence.