Kosmos 25 (Russian: Космос 25 meaning Cosmos 25), also known as DS-P1 No.4 was a prototype radar target satellite for anti-ballistic missile tests, which was launched by the Soviet Union in 1964 as part of the Dnepropetrovsk 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]
Mission type | ABM Radar target Technology |
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COSPAR ID | 1964-010A ![]() |
SATCAT no. | 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 |
It was launched aboard a Kosmos-2I 63S1 rocket,[4] from Mayak-2 at Kapustin Yar. The launch occurred at 13:26 GMT on 27 February 1964.[5]
Kosmos 25 was placed into a low Earth orbit with a perigee of 255 kilometres (158 mi), an apogee of 526 kilometres (327 mi), 49.0° of inclination, and an orbital period of 92.3 minutes.[3] It decayed from orbit on 21 November 1964.[6]
Kosmos 25 was a prototype DS-P1 satellite, the last of four to be launched.[3] Of these, it was the third to successfully reach orbit after Kosmos 6 and Kosmos 19.[7] It was succeeded by the first operational DS-P1 satellite, Kosmos 36.
← 1963 · Orbital launches in 1964 · 1965 → | |
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Poppy 3 · GGSE-1 · SOLRAD 7A · SECOR 1 | OPS 3367A · OPS 3367B | Relay 2 | Echo 2 | Jupiter Nosecone | Elektron 1 · Elektron 2 | Ranger 6 | OPS 3444 | Zond 3MV-1 No.2 | Kosmos 25 | OPS 2423 | OPS 3722 | OPS 3435 | Kosmos 26 | BE-A | Luna E-6 No.6 | OPS 3467 | Kosmos 27 | Ariel 2 | Zond 1 | Kosmos 28 | Gemini 1 | Polyot 2 | Luna E-6 No.5 | Transit 5BN-3 · Transit 5E-4 | OPS 3743 | Kosmos 29 | OPS 2921 | Kosmos 30 | OPS 3592 | Apollo AS-101 | OPS 4412 | OPS 3483 | Molniya-1 No.2 | Kosmos 31 | Kosmos 32 | OPS 3236 | OPS 4467A · OPS 4467B | OPS 3754 | Kosmos 33 | ESRS | Atlas-Centaur 3 | Kosmos 34 | OPS 3395 | OPS 3684 · OPS 4923 | Elektron 3 · Elektron 4 | OPS 3491 | Kosmos 35 | Vela 2A · Vela 2B · ERS-13 | Ranger 7 | Kosmos 36 | OPS 3042 | Kosmos 37 | OPS 3802 · OPS 3216 | Kosmos 38 · Kosmos 39 · Kosmos 40 | Syncom 3 | OPS 2739 | Kosmos 41 | Kosmos 42 · Kosmos 43 | Kosmos 44 | Titan 3A-2 | OGO-1 | Kosmos 45 | OPS 3497 | Apollo AS-102 | OPS 4262 | Kosmos 46 | Explorer 21 | OPS 3333 | Kosmos 47 | OPS 5798 · Dragsphere 1 · Dragsphere 2 | OPS 4036 | Explorer 22 | Voskhod 1 | Kosmos 48 | OPS 3559 | Strela-1 No.6 · Strela-1 No.7 · Strela-1 No.8 | OPS 4384 · OPS 5063 | Kosmos 49 | Kosmos 50 | OPS 5434 | OPS 3062 | Mariner 3 | Explorer 23 | OPS 3360 | Explorer 24 · Explorer 25 | Mariner 4 | Zond 2 | DS-2 No.2 | OPS 4439 | Kosmos 51 | Titan 3A-1 | Surveyor Mass Model | OPS 6582 · Transit 5E-5 | San Marco 1 | OPS 3358 | Explorer 26 | OPS 3762 | |
Payloads are separated by bullets ( · ), launches by pipes ( | ). Crewed flights are indicated in underline. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in brackets. |
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