This page no longer updated from 31 October 2001. Latest version can be found at www.astronautix.com

astronautix.com IS-A

Istrebitel Sputnik
Istrebitel Sputnik - I2P ASAT. As far as is known follow-on models (IS-P, IS-MU) and the R-36-launched targets had a similar appearance.

Credit: © Mark Wade. 10,593 bytes. 251 x 213 pixels.



Other Designations: IS. Article Number: 4Ya11. Manufacturer's Designation: IS-A. Class: Military. Type: ASAT. Nation: USSR. Manufacturer: OKB-52 / KBYu.

Modernised ASAT. Tested in 1976-1978 and operational through the late 1980's.


Specification

Total Mass: 1,400 kg.


IS-A Chronology


16 March 1961 UR-200 (8K81) launch vehicle development authorised. Launch Vehicle: UR-200.

An enabling decree was issued on 1 August 1961 by the Central Committee and Politburo. The UR-200 was designed not only to send a thermonuclear warhead over a range of 12,000 km, but also to orbit all of the Kosmoplan military variants: the IS ASAT; the US nuclear-powered naval intelligence satellite; and the Kosmoplan combat re-entry vehicle.


16 February 1976 Cosmos 804 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 160 km. Apogee: 702 km. Inclination: 65.1 deg.

ASAT interceptor. After intercept with target deorbited using on-board engine.


13 April 1976 Cosmos 814 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 118 km. Apogee: 480 km. Inclination: 65.1 deg.

ASAT interceptor. After intercept with target deorbited using on-board engine.


21 July 1976 Cosmos 843 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 132 km. Apogee: 346 km. Inclination: 65.1 deg.

ASAT interceptor. Intercepted Cosmos 839. Deorbited after test.


28 December 1976 Cosmos 886 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 593 km. Apogee: 2,291 km. Inclination: 65.8 deg.

ASAT interceptor. Intercepted and destroyed Cosmos 880 target.


23 May 1977 Cosmos 910 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 149 km. Apogee: 506 km. Inclination: 65.1 deg.

ASAT interceptor. Failed to intercept Cosmos 909. Deorbited using on-board engine.


17 June 1977 Cosmos 918 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 125 km. Apogee: 197 km. Inclination: 65.1 deg.

ASAT interceptor. Failed to intercept Cosmos 909. Deorbited using on-board engine.


26 October 1977 Cosmos 961 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 269 km. Apogee: 1,421 km. Inclination: 66.4 deg.

ASAT interceptor. Succeeded in intercept of Cosmos 959. Deorbited using on-board engine.


21 December 1977 Cosmos 970 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 928 km. Apogee: 1,142 km. Inclination: 65.9 deg.

ASAT interceptor. Intercepted Cosmos 970 target. Ordered to self-destruct following interception.


19 May 1978 Cosmos 1009 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 966 km. Apogee: 1,364 km. Inclination: 65.9 deg.

ASAT interceptor. Succeeded in intercept of Cosmos 970. Deorbited using on-board engine.


18 April 1980 Cosmos 1174 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 372 km. Apogee: 1,419 km. Inclination: 66.1 deg.

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.


02 February 1981 Cosmos 1243 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 294 km. Apogee: 1,013 km. Inclination: 65.8 deg.

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 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 299 km. Apogee: 1,022 km. Inclination: 65.8 deg.

ASAT interceptor. Failed to intercept Cosmos 1241 target. Deorbited to destructive reentry in the atmosphere.


18 June 1982 Cosmos 1379 Program: ASAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 1,400 kg. Perigee: 144 km. Apogee: 546 km. Inclination: 65.1 deg.

ASAT interceptor. Succeeded in intercept of Cosmos 1375 target. Deorbited using on-board engine. Final test of series.



Bibliography:



Back to Index
Last update 12 March 2001.
Contact Mark Wade with any corrections or comments.
Conditions for use of drawings, pictures, or other materials from this site..
© Mark Wade, 2001 .