| Kosmos 204 | |
| Mission Type: | ABM radar target |
| Cospar Id: | 1968-015A |
| Satcat: | 03139 |
| Mission Duration: | 362 days |
| Spacecraft Type: | DS-P1-I |
| Manufacturer: | Yuzhnoye |
| Launch Mass: | 400 kg |
| Launch Date: | 5 March 1968, 18:28:00 GMT |
| Launch Rocket: | Kosmos-2I 63SM |
| Launch Site: | Plesetsk Site 133/3 |
| Launch Contractor: | Yuzhnoye |
| Decay Date: | 2 March 1969 |
| Orbit Epoch: | 5 March 1968 |
| Orbit Reference: | Geocentric |
| Orbit Regime: | Low Earth |
| Orbit Periapsis: | 204 km |
| Orbit Apoapsis: | 844 km |
| Orbit Inclination: | 70.0° |
| Orbit Period: | 95.9 minutes |
| Apsis: | gee |
Kosmos 204 (Russian: 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.[1] and had a mass of .[2]
It was launched aboard a Kosmos-2I 63SM rocket,[3] from Site 133/1 at Plesetsk. The launch occurred at 18:28:00 GMT on 5 March 1968.[4]
Kosmos 204 was placed into a low Earth orbit with a perigee of, an apogee of, an inclination of 70.0°, and an orbital period of 95.9 minutes.[5] It decayed from orbit on 2 March 1969.[6]
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.[7]