| Mission type | ABM Radar target Technology |
|---|---|
| COSPAR ID | 1964-010A |
| SATCATno. | 00757 |
| Mission duration | 268 days |
| Spacecraft properties | |
| Spacecraft type | DS-P1 |
| Manufacturer | Yuzhnoye |
| Launch mass | 355 kg[1] |
| Start of mission | |
| Launch date | 27 February 1964, 13:26:00 GMT |
| Rocket | Kosmos-2I 63S1 |
| Launch site | Kapustin Yar,Mayak-2 |
| Contractor | Yuzhnoye |
| End of mission | |
| Decay date | 21 November 1964 |
| Orbital parameters | |
| Reference system | Geocentric[2] |
| Regime | Low Earth |
| Perigee altitude | 255 km |
| Apogee altitude | 526 km |
| Inclination | 49.0° |
| Period | 92.3 minutes |
| Epoch | 27 February 1964 |
Kosmos 25 (Russian:Космос 25 meaningCosmos 25), also known asDS-P1 No.4 was a prototype radar targetsatellite foranti-ballistic missile tests, which was launched by theSoviet Union in 1964 as part of theDnepropetrovsk Sputnik programme. Its primary mission was to demonstrate the necessary technologies for radar tracking of spacecraft, which would allow future satellites to function as targets.[3]
It was launched aboard aKosmos-2I 63S1 rocket,[4] fromMayak-2 atKapustin Yar. The launch occurred at 13:26 GMT on 27 February 1964.[5]
Kosmos 25 was placed into alow Earth orbit with aperigee of 255 kilometres (158 mi), anapogee of 526 kilometres (327 mi), 49.0° ofinclination, and anorbital period of 92.3 minutes.[3] Itdecayed from orbit on 21 November 1964.[6]
Kosmos 25 was a prototypeDS-P1 satellite, the last of four to be launched.[3] Of these, it was the third to successfully reach orbit afterKosmos 6 andKosmos 19.[7] It was succeeded by the first operational DS-P1 satellite,Kosmos 36.
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