Kosmos 553
| Mission type | ABM radar target |
|---|---|
| COSPAR ID | 1973-020A |
| SATCAT no. | 06427 |
| Spacecraft properties | |
| Spacecraft type | DS-P1-Yu |
| Manufacturer | Yuzhnoye |
| Launch mass | 400 kilograms (880 lb) |
| Start of mission | |
| Launch date | 12 April 1973, 11:49:55 UTC |
| Rocket | Kosmos-2I 63SM |
| Launch site | Plesetsk 133/1 |
| End of mission | |
| Decay date | 11 November 1973 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 264 kilometres (164 mi) |
| Apogee altitude | 470 kilometres (290 mi) |
| Inclination | 70.9 degrees |
| Period | 91.9 minutes |
Kosmos 553 (Russian: Космос 553 meaning Cosmos 553), known before launch as DS-P1-Yu No.55, was a Soviet satellite which was launched in 1973 as part of the Dnepropetrovsk Sputnik programme. It was a 400-kilogram (880 lb) spacecraft, which was built by the Yuzhnoye Design Bureau, and was used as a radar calibration target for anti-ballistic missile tests.