ASAT

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ASAT

ASAT Launch Complex - ASAT Launch Complex at Baikonuar - US Department of Defense drawing

37,293 bytes. 299 x 271 pixels.

Program: ASAT. Objective: Military. Type: ASAT.

The USA began the space weapons race with their first anti-satellite (ASAT) projects at the end of the 1950ï¿½s. These limited-budget efforts were intended not to create just an anti-satellite system, but eventually to defend the entire North American continent from attack from space. Such efforts culminated in the Strategic Defence Initiative of the 1980ï¿½s. On 19 June 1959 the first trial of the Bold Orion rocket, air-launched from a B-58, attempted to destroy the satellite Explorer 4, but missed it by six kilometres. Subsequent launches were not noticeably more effective. The equivalent Navy projects Caleb, Hi-Hoe were not any more effective, and further work on an air-launched ASAT was abandoned until the 1980ï¿½s.

The Soviet Union began work on its anti-satellite system at the beginning of the 1960ï¿½s. By then it had become clear that not only rockets from space presented a threat to the nationï¿½s security. On-orbit intelligence, communications, navigation, and meteorological satellites of the enemy would have to be destroyed at the beginning of military operations.

A wide range of alternative projects were considered before a single approach was selected. The fundamental task was for the system to enter an orbit intercepting or coinciding with the enemy spacecraft, and then to destroy it. To meet this objective the following proposals were made:

Use of an intercontinental ballistic missile with a nuclear warhead which would be exploded in space. This was part of the Soviet militaryï¿½s Global Rocket projects of the early 1960ï¿½s. These included the GR-1 global rocket (known in the US as the Fractional Orbital Bombing System, FOBS), and the GR-2 with a 100 megaton warhead . The advantage of this destruction of enemy satellite was that it certainly guaranteed the annihilation of all spacecraft out to a distance of 1,000 km from the site of the explosion. The drawback was that it would destroy not only the enemyï¿½s spacecraft, and that the radiation and electromagnetic pulse effects of such a huge explosion were not known. Luckily for future generations, this approach was rejected and trials of nuclear weapons in space were not conducted. The United States did however deploy two such systems (Nike Zeus DM-15S and Project 437/Thor LV-2D) from 1963 to 1972.
An air-launched ASAT, as had been the subject of repeated trials in the USA from 1959. This would be launched from an aircraft at an altitude of 30,000 m and lift an explosive charge of 50 kg to orbital altitude. The rocket would have to intercept the target satellite and approach to within 30 m for the satelliteï¿½s destruction to be assured. Work on this project began in 1961 and continued to 1963. However, as in the US, the flight trials did not achieve any results that would justify putting the system into production. A guidance system could not be developed that was effective enough to achieve the required intercept accuracy.
Manned ASAT. OKB-1ï¿½s Filial 3, led by Kozlov, began active development of the Soyuz-P in 1964. Initially the Soyuz-P was designed for piloted inspection and destruction of enemy satellites. It was intended that the Soyuz would rendezvous with the target satellite. The cosmonaut would then exit the spacecraft and inspect the satellite. Depending on the mission and results of the inspection, the satellite would then be destroyed, neutralised, or returned to earth for further study. This approach was quickly rejected due to its multiple technical complexities and the obvious danger to the cosmonaut. All Soviet satellites were equipped with automatic destruct systems to prevent them from falling into enemy hands. These would go off if given parameters were met, even when not in radio contact with Soviet ground control. There was every reason to believe that the enemy used similar systems in their satellites. Therefore it was believed that this approach would only result in the death of the cosmonaut.
Manned ASAT using stand-off inspection and weapons. The revised design was designated the Soyuz 7K-PPK (pilotiruemiy korabl-perekhvatchik, manned interceptor spacecraft). In this version, the Soyuz was equipped with eight small rockets. As in the previous case, the spacecraft would rendezvous with the enemy satellite. But the cosmonaut would remain in the spacecraft, using visual and other on-board systems to inspect the satellite. If the satellite was to be eliminated, the Soyuz would back off to a distance of 1 kilometre, and then destroy it using its on-board rocket-mines. A new version of the R-7 launch vehicle, the 11A514, was put into development to support launch the Soyuz 7K-PPK. In the end, delays in the development of the Soyuz and success in initial tests of the selected approach led to abandonment of this project.
Unmanned satellite interceptor, similar to the manned Soyuz-PPK, which would destroy targets using on-board mine-rockets. But here again designers were unable to come up with a guidance and targeting system of sufficient accuracy to solve the difficult problem of satellite-to-satellite interception. Furthermore the interceptor would have to manoeuvre to a distance close enough to the target to launch its rockets, in the process itself becoming a target for enemy systems.
A ï¿½kamikazeï¿½ satellite. This would not require the absolute precision of the other methods. It could have a large fragmentation charge, manoeuvre to the vicinity of the target, and then explode, destroying itself and the nearby enemy satellite in the process. This was the cheapest, earliest available, and easiest variant technologically. In the end it was this design that was selected for further development.
Lurking unmanned space interceptor. These would be placed into earth orbit, but then stored there dormantly for a long time. At the start of military operations, they would be activated, and the spacecraftï¿½s engine would manoeuvre the interceptor to the vicinity of the intended target, and then explode. This system had the advantage, compared to the earth-launched kamikaze, of rapid response at the start of hostilities. But it had the disadvantage of requiring a large new engine with a substantial fuel supply so that the interceptor could quickly change its altitude and inclination to reach the required target orbits (300 to 1000 km altitude and 32 to 100 degree inclination). Such a satellite would be too large for available launch vehicles. A second disadvantage was that it was not considered possible for the on-orbit storage to be maintained for more than 6 to 12 months, which would require constant and costly replenishment of the ASAT constellation. The third and most telling disadvantage was that such on-orbit storage would turn the ASATï¿½s themselves into targets for enemy ASATï¿½s. Therefore this variant never got beyond the paper stage.
A large space mine dispenser, which would carry 12 interceptors into orbit in a single launch. The dispenser would manoeuvre to the vicinity to a consecutive series of targets, and then destroy each in turn. On the plus side this approach would allow calculation and optimisation of the orbit to most efficiently destroy a series of enemy satellites at the start of a conflict. However offsetting this was the extremely large and expensive nature of such a spacecraft.

The chosen approach, the single-launch kamikaze, offered the earliest possible deployment date while being the cheapest to develop. As proposed by Vladimir Chelomeiï¿½s OKB-52, this was designated the IS (IS, ï¿½Istrebitel Sputnikovï¿½, fighter satellite). The orbital parameters of the target satellite would already be known before launch, and the interceptor would be pre-programmed with those parameters. After being placed into an initial parking orbit by the launch vehicle, the interceptorï¿½s engine would make a number of manoeuvres to intercept with the target, and at the appropriate moment, blow itself up together with the target. The interception was intended to take place on the first to third orbit, although it would be possible to make repeated attempts in case the target was missed.

The Istrebitel Sputnikov was approximately spherical in form and had a total mass of 1,400 kg. It consisted of two sections: the main section, which contained the guidance and targeting, computational and optical homing systems, and the 300 kg explosive charge; and the engine section. The body of the interceptor was designed so that after the explosion it would fragment into 12 groups of shrapnel. The specified radius of guaranteed target destruction was 1 km. However in a head-on intercept, only 400 m radius was guaranteed, while in a chase intercept, a 2 km radius of destruction could be achieved. The engine was capable of numerous quick starts and restarts, with a total operating time of 300 seconds.

During the course of its operational life the spacecraft was considerably modernised, and beginning in 1976 what can be considered the ï¿½second generationï¿½ of ASATï¿½s was launched.

ASAT I2P

Credit: Videokosmos. 15,467 bytes. 352 x 267 pixels.

Development work on the Istrebitel Sputnik began in 1961 in the construction bureau of V N Chelomei. It was intended that Chelomei would provide not only the satellite but the UR-200 launch vehicle as well. However development of the UR-200 was slower than expected, and it was decided to launch test versions of the satellite on S P Korolevï¿½s R-7 rocket. These launches received the official designation ï¿½Polyotï¿½ (ï¿½Flightï¿½). The first was launched on 1 November 1963. Two test trials of the Polyot were successfully completed, and it was planned that a longer series of tests would be carried out. However in October 1964 Khrushchev was ousted from power, and Chelomei lost his main patron in the hierarchy. Further work on the Istrebitel Sputnikov was to be transferred to Korolevï¿½s OKB, the UR-200 rocket was cancelled, and M K Yangelï¿½s R-36 ICBM was selected as the launch vehicle to replace it. These machinations resulted in a four year delay before tests of the system were resumed, and a five year delay in the operational date. The I2P that was finally flown in the first test series in 1968-1972 (variously attributed to the Lavochkin, Chelomei and Yangel OKBï¿½s) was substantially different from the original Chelomei design. Two different targets were used in the tests. At first an R-36-launched I2M target was used (evidently a derivative of the ASAT itself). This was replaced in 1971 by the lighter, cheaper DS-P1-M target designed by Yangel and launched by the smaller Kosmos 11K65M launch vehicle. In 1972 the USSR and USA signed the first Strategic Arms Limitation Treaty. In connection with this the trials of the Istrebitel Sputnik were discontinued, although the system was adopted as armament of the Red Army. See the chronology below for a flight-by-flight account of the test series.

By 1976 modifications of the design resulted in the substantially improved IS-A. This model was put through a new series of trial flights, which continued through 1978. A new target, the IS-P was used for these tests. These qualified the new on-board systems, including new homing systems, on new target intercept trajectories. In 1981-1982 there were some additional test flights to test the functioning of the systems after long-term storage (these initially had very disappointing results). There were no further tests after 1982 and eventually the system was retired as technically obsolete. There are some reports that an improved version, the IS-MU, was put into operation without flight tests. It is also reliably reported that operationally the R-36-launched ASAT was replaced by another, still classified system, probably air-launched (in the 1990ï¿½s satellite launch vehicles air-launched from MiG-31 fighters and Tu-160 bombers have been offered commercially; these are probably based on secret ASAT air-launched missiles).

One problem in testing the system was that it inevitably created a large amount of space debris after exploding, which presented a hazard to space operations. Tests of variations in the explosive charge and the frangibility of the spaceframe resulted in from 27 to 139 fragments being left in orbit. Once the optimum fragmentation pattern was determined, later tests did not ignite the charge in order to prevent the creation of additional space debris. It is interesting to compare the test results as now known with the results as guessed by Western observers. It is clear that some deliberate deception was going on - after successful tests the ASAT would sometimes be destroyed by its self-destruct system or deorbited, and such tests were counted as failures by Western observers.

Actual Istrebitel Sputnik Test Results vs Earlier Western Assessment

Launch		Actual Result		Earlier Western Assessment
Date	Name	S/F	Summary	S/F	Summary
11-1-63	Polyot 1	--	ASAT interceptor control and propulsion test. Launched by Korolev R-7 because Chelomei's own UR-200 was not yet available. Flight was considered a great success. Micro-engine fired 350 times and main stabilizing engine fired 300 times.	--	ASAT interceptor control and propulsion test.
4-12-64	Polyot 2	--	ASAT interceptor control and propulsion test.	--	ASAT interceptor control and propulsion test.
10-27-67	Cosmos 185	--	First test of Istrebitel Sputnik. Only tested engine; no target launched. First launch of Tsyklon 2 launch vehicle.	--	Possible technical test of ASAT interceptor, without accompanying target.
4-24-68	Cosmos 217	--	Unsuccessful launch of ASAT target. Satellite did not separate from last rocket stage. Planned launch of interceptor cancelled.	--	Not noted as ASAT-associated launch.
10-19-68	Cosmos 248	--	ASAT target. Intercepted repeatedly by Cosmos 249 on 20 October; destroyed by Cosmos 252 on 1 November.	--	ASAT target.
10-20-68	Cosmos 249	S	ASAT interceptor. Intercepted Cosmos 248 target on second orbit. Repeatedly approached Cosmos 248, verifying primary and reserve homing and guidance systems. Destroyed itself in test of on-board destruct system.	F	ASAT interceptor. Radar guidance; intercept failed.
11-1-68	Cosmos 252	S	ASAT interceptor. Intercepted and destroyed Cosmos 248 target satellite within one day of launch. Left 139 fragments in orbit, the largest of any ASAT test.	S	ASAT interceptor. Radar guidance; intercept succeeded.
8-6-69	Cosmos 291	--	ASAT target. Did not enter intended target orbit due to failure of on-board engine. Launch of ASAT interceptor planned for the next day was cancelled.	--	Not noted as ASAT-associated launch.
10-20-70	Cosmos 373	--	ASAT target. Manoeuvred twice to provide target for Cosmos 374 and 375 interceptors.	--	ASAT target.
10-22-70	Cosmos 374	S	ASAT interceptor. Intercepted Cosmos 374 on second orbit. Blown up on instructions from ground.	F	ASAT interceptor. Radar guidance; intercept failed.
10-30-70	Cosmos 375	S	ASAT interceptor. Intercept on second orbit. Blown up on instructions from ground. Dual launch of interceptors was intended to help ground staff perfect computational methods for quick-response launches.	S	ASAT interceptor. Radar guidance; intercept succeeded.
2-9-71	Cosmos 394	--	ASAT target. First test using Yangel-designed lighter, cheaper target launched by Kosmos 11K65M booster from Plesetsk.	--	ASAT target.
2-25-71	Cosmos 397	S	ASAT interceptor. Intercept and destruction of target successful on second orbit.	S	ASAT interceptor. Radar guidance; intercept succeeded.
3-19-71	Cosmos 400	--	ASAT target for Cosmos 404 interceptor.	S	ASAT interceptor. Radar guidance; intercept succeeded.
4-4-71	Cosmos 404	S	ASAT interceptor. Conducted an extended test flight to shake out homing system and engine function. Tested new redundant ranging systems. Tested effectiveness of new approach trajectory to target, (target was approached from above rather than below).	S	ASAT interceptor. Radar guidance; intercept succeeded.
11-30-71	Cosmos 459	--	ASAT target for Cosmos 462 interceptor.	--	ASAT target.
12-3-71	Cosmos 462	S	ASAT interceptor. Successfully intercepted and destroyed Cosmos 459 target. This completed state trials test series and in 1972 the Istrebitel Sputnik was adopted as armament for the Soviet Army. Produced the lowest number of fragments (27) of any test.	S	ASAT interceptor. Radar guidance; intercept succeeded.
9-29-72	Cosmos 521	--	ASAT target launched to test modifications to ASAT interceptor. Interceptor launch cancelled due to technical failure in target telemetry system. Signature of SALT treaty in May 1972 resulted in military being ordered to discontinue further ASAT tests.	--	Not noted as ASAT-associated launch.
2-12-76	Cosmos 803	--	ASAT target. Beginning of test of second generation ASAT interceptor. Objective was to complete test series by 1978 ABM treaty date.	--	ASAT target.
2-16-76	Cosmos 804	S	ASAT interceptor. After intercept with target deorbited using on-board engine.	F	ASAT interceptor. Radar guidance; intercept failed.
4-13-76	Cosmos 814	S	ASAT interceptor. After intercept with target deorbited using on-board engine.	S	ASAT interceptor. Radar guidance; intercept succeeded.
7-9-76	Cosmos 839	--	ASAT target for Cosmos 843 interceptor.	--	Not noted as ASAT-associated launch.
7-21-76	Cosmos 843	S	ASAT interceptor. Intercepted Cosmos 839. Deorbited after test.	F	ASAT interceptor. Radar guidance; intercept failed.
11-26-76	Cosmos 868	--	Not associated with ASAT project.	--	ASAT interceptor. Radar guidance; intercept failed.
12-9-76	Cosmos 880	--	ASAT target for Cosmos 886 interceptor.	--	ASAT target.
12-28-76	Cosmos 886	S	ASAT interceptor. Intercepted and destroyed Cosmos 880 target.	F	ASAT interceptor. Optical guidance; intercept failed.
5-19-77	Cosmos 909	--	ASAT target.	--	ASAT target.
5-23-77	Cosmos 910	F	ASAT interceptor. Failed to intercept Cosmos 909. Deorbited using on-board engine.	F	ASAT interceptor. Radar guidance; intercept failed.
6-17-77	Cosmos 918	F	ASAT interceptor. Failed to intercept Cosmos 909. Deorbited using on-board engine.	S	ASAT interceptor. Radar guidance; intercept succeeded.
10-21-77	Cosmos 959	--	ASAT target for Cosmos 961.	--	ASAT target.
10-26-77	Cosmos 961	S	ASAT interceptor. Succeeded in intercept of Cosmos 959. Deorbited using on-board engine.	S	ASAT interceptor. Radar guidance; intercept succeeded.
12-13-77	Cosmos 967	--	ASAT target for Cosmos 970.	--	ASAT target.
12-21-77	Cosmos 970	S	ASAT interceptor. Intercepted Cosmos 970 target. Ordered to self-destruct following interception.	F	ASAT interceptor. Optical guidance; intercept failed.
5-19-78	Cosmos 1009	S	ASAT interceptor. Succeeded in intercept of Cosmos 970. Deorbited using on-board engine.	F	ASAT interceptor. Optical guidance; intercept failed.
4-3-80	Cosmos 1171	--	ASAT target for Cosmos 1174 interceptor. First in a series of tests to validate functioning of system after extended storage.	--	ASAT target.
4-18-80	Cosmos 1174	F	ASAT interceptor. First test of ASAT after extended storage. Missed Cosmos 1171 target by a large distance; over the two following days two more attempts were made with the backup engine, but all failed. On 20 April the satellite was self-destructed.	F	ASAT interceptor. Optical guidance; intercept failed.
1-21-81	Cosmos 1241	--	ASAT target for Cosmos 1243 and Cosmos 1258.	--	ASAT target.
2-2-81	Cosmos 1243	F	ASAT interceptor. Approached within 50 m of target, but explosive charge did not go off as planned. Deorbited to destructive re-entry in the atmosphere.	F	ASAT interceptor. Optical guidance; intercept failed.
3-14-81	Cosmos 1258	F	ASAT interceptor. Failed to intercept Cosmos 1241 target. Deorbited to destructive re-entry in the atmosphere.	S	ASAT interceptor. Radar guidance; intercept succeeded.
6-6-82	Cosmos 1375	--	ASAT target.	--	ASAT target.
6-18-82	Cosmos 1379	S	ASAT interceptor. Succeeded in intercept of Cosmos 1375 target. Deorbited using on-board engine. Final test of series.	F	ASAT interceptor. Optical guidance; intercept failed.

Major Events: .

01 November 1963 Polet 1; Polyot 1 Spacecraft: Polyot-1. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Polyot 11A59. More details
ASAT I2P
Credit: Videokosmos. 19,325 bytes. 314 x 238 pixels.
ASAT interceptor control and propulsion test. Launched by Korolev R-7 because Chelomei's own UR-200 was not yet available. Purpose - elaboration of system providing for the extensive manoeuvring of space apparatuses. Flight was considered a great success. Micro-engine fired 350 times and main stabilizing engine fired 300 times. Orbit given is final orbit after manoeuvres.
12 April 1964 Polet 2; Polyot 2 Spacecraft: Polyot-2. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Polyot 11A59. More details
ASAT interceptor control and propulsion test. Elaboration of systems providing for the extensive manouevring of space apparatuses.
27 October 1967 Cosmos 185 Spacecraft: I2-BM. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon. More details
First test of Korolev's Istrebitel Sputnik. Only tested engine; no target launched. First launch of Tsykon 2 launch vehicle.
24 April 1968 Cosmos 217 Spacecraft: I2M. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon. More details
Unsuccessful launch of ASAT target. Satellite did not separate from last rocket stage. Planned launch of interceptor cancelled.
19 October 1968 Cosmos 248 Spacecraft: I2M. Mass: 650 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon. More details
ASAT target. Intercepted repeatedly by Cosmos 249 on 20 October; destroyed by Cosmos 252 on 1 November.
20 October 1968 Cosmos 249 Spacecraft: I2P. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon. More details
ASAT interceptor. Intercepted Cosmos 248 target on second orbit. Repeatedly approached Cosmos 248, verifying primary and reserve homing and guidance systems. Destroyed itself in test of on-board destruct system. Counted as a failure by Western observers because that target was not destroyed; but this was not an objective of the test. Left 109 fragments in orbit, of which 54 were still in orbit in 1996.
01 November 1968 Cosmos 252 Spacecraft: I2P. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon. More details
ASAT interceptor. Intercepted and destroyed Cosmos 248 target satellite within one day of launch. Left 139 fragments in orbit, the largest of any ASAT test.
06 August 1969 Cosmos 291 Spacecraft: I2P. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT target. Did not enter intended target orbit due to failure of on-board engine. Launch of ASAT interceptor planned for the next day was cancelled.
20 October 1970 Cosmos 373 Spacecraft: I2P. Mass: 650 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT target. Maneuvered twice to provide target for Cosmos 374 and 375 interceptors.
22 October 1970 Cosmos 374 Spacecraft: I2P. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Intercepted Cosmos 374 on second orbit. Blown up on instructions from ground.
30 October 1970 Cosmos 375 Spacecraft: I2P. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Intercept on second orbit. Blown up on instructions from ground. Dual launch of interceptors was intended to help ground staff perfect computational methods for quick-response launches when orbital methods of target were not precisely known.
22 December 1970 DS-P1-M s/n 1 Spacecraft: DS-P1-M. Mass: 600 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target. First test of Yangel-desinged target failed to reach orbit.
09 February 1971 Cosmos 394 Spacecraft: DS-P1-M. Mass: 650 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target. First test using Yangel-designed lighter, cheaper target launched by Kosmos 11K65M booster from Plesetsk.
25 February 1971 Cosmos 397 Spacecraft: I2P. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Intercept and destruction of target successful on second orbit.
19 March 1971 Cosmos 400 Spacecraft: DS-P1-M. Mass: 650 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target for Cosmos 404 interceptor.

04 April 1971 Cosmos 404 Spacecraft: I2P. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details

ASAT interceptor. Conducted an extended test flight to shake out homing system and engine function. Tested new redundant ranging systems. Tested effectiveness of new approach trajectory to target, whereby target was approached from above rather than below. Following completion of tests and verification of system functions via telemetry, spacecraft was commanded to a destructive reentry over the Pacific Ocean.

Asat hit - First operational ASAT, shown in a Soviet film attacking a US KH-4 Corona reconnaisance satellite. Tested in 1967-1971 and deployed through the late 1970's. Design as revised by Yangel and Korolev from Chelomei's original. Launch vehicle R-36.

Credit: Videokosmos. 5,370 bytes. 225 x 141 pixels.

30 November 1971 Cosmos 459 Spacecraft: DS-P1-M. Mass: 650 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target for Cosmos 462 interceptor.
03 December 1971 Cosmos 462 Spacecraft: I2P. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Successfully intercepted and destroyed Cosmos 459 target. This completed state trials test series and in 1972 the Istrebitel Sputnik was adopted as armament for the Soviet Army. Cosmos 462 produced the lowest number of fragments (27) of any of the ASAT's tested.
29 September 1972 Cosmos 521 Spacecraft: DS-P1-M. Mass: 750 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target launched to test modifications to ASAT interceptor. Interceptor launch cancelled due to technical failure in target telemetry system. Signature of SALT treaty in May 1972 resulted in military being ordered to discontinue further ASAT tests.
19 December 1975 I2P Spacecraft: IS-P. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
12 February 1976 Cosmos 803 Spacecraft: IS-P. Mass: 650 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target. Beginning of test of 'second generation' ASAT interceptor. Objective was to complete test series by 1978 ABM treaty date.
16 February 1976 Cosmos 804 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. After intercept with target deorbited using on-board engine.
13 April 1976 Cosmos 814 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. After intercept with target deorbited using on-board engine.
09 July 1976 Cosmos 839 Spacecraft: IS-P. Mass: 400 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target for Cosmos 843 interceptor.
21 July 1976 Cosmos 843 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Intercepted Cosmos 839. Deorbited after test.
09 December 1976 Cosmos 880 Spacecraft: IS-P. Mass: 650 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target for Cosmos 886 interceptor.
28 December 1976 Cosmos 886 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Intercepted and destroyed Cosmos 880 target.
19 May 1977 Cosmos 909 Spacecraft: IS-P. Mass: 650 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target.
23 May 1977 Cosmos 910 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Failed to intercept Cosmos 909. Deorbited using on-board engine.
17 June 1977 Cosmos 918 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Failed to intercept Cosmos 909. Deorbited using on-board engine.
21 October 1977 Cosmos 959 Spacecraft: IS-P. Mass: 650 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target for Cosmos 961.
26 October 1977 Cosmos 961 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Succeeded in intercept of Cosmos 959. Deorbited using on-board engine.
13 December 1977 Cosmos 967 Spacecraft: IS-P. Mass: 650 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target for Cosmos 970.
21 December 1977 Cosmos 970 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Intercepted Cosmos 970 target. Ordered to self-destruct following interception.
19 May 1978 Cosmos 1009 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Succeeded in intercept of Cosmos 970. Deorbited using on-board engine.
03 April 1980 Cosmos 1171 Spacecraft: IS-P. Mass: 650 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target for Cosmos 1174 interceptor. First in a series of tests to validate functioning of system after extended storage.
18 April 1980 Cosmos 1174 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. First test of ASAT after extended storage. Missed Cosmos 1171 target by a large distance; over the two following days two more attempts were made with the backup engine, but all failed. On 20 April the satellite was ordered to self-destruct in orbit, ending the longest ASAT interceptor mission.
21 January 1981 Cosmos 1241 Spacecraft: IS-P. Mass: 650 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target for Cosmos 1243 and Cosmos 1258.
02 February 1981 Cosmos 1243 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Approached within 50 m of target, but explosive charge did not go off as planned. Deorbited to destructive reentry in the atmosphere.
14 March 1981 Cosmos 1258 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Failed to intercept Cosmos 1241 target. Deorbited to destructive reentry in the atmosphere.
06 June 1982 Cosmos 1375 Spacecraft: IS-P. Mass: 650 kg. Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. More details
ASAT target.
18 June 1982 Cosmos 1379 Spacecraft: IS-A. Mass: 1,400 kg. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. More details
ASAT interceptor. Succeeded in intercept of Cosmos 1375 target. Deorbited using on-board engine. Final test of series.

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Last update 12 March 2001.
Contact Mark Wade with any corrections or comments.
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© Mark Wade, 2001 .