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US-P
US-P -

Credit: Mark Wade. 21,052 bytes. 320 x 209 pixels.



Article Number: 17F17. Manufacturer's Designation: US-PM. Class: ELINT. Type: Naval reconnaisance. Nation: USSR. Manufacturer: KBYu.

EORSAT (Electronic Ocean Reconnaisance Satellite) proivding ELINT services for Soviet Navy. Second generation systems were be developed in the second half of the 1970's and deployed in the first half of the 1980's. The modernized naval reconnaissance system Idoegramma-Pirs consisting of systems Pirs-1 and Pirs-2. These evidently correspond to the satellites designted US-PM and US-PU, but it is not known which corresponds to which and and which launches represent one or the other type. Modernized version of US-P; stationed at 120 degree intervals on the same orbit with a 0 degree ascending node.


Specification

Total Mass: 3,150 kg.


US-PM Chronology


30 March 1993 Cosmos 2238 Program: EORSAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 3,150 kg. Perigee: 402 km. Apogee: 416 km. Inclination: 65.0 deg. Duration: 567.00 days.

First launch of new EORSAT, first of at 120 degree intervals on the same orbit with a 0 degree ascending node. Ocean surveillance.


28 April 1993 Cosmos 2244 Program: EORSAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 3,150 kg. Perigee: 402 km. Apogee: 416 km. Inclination: 65.0 deg. Duration: 657.00 days.

Second launch of new EORSAT, second of three stationed at 120 degree intervals on the same orbit with a 0 degree ascending node.


07 July 1993 Cosmos 2258 Program: EORSAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 3,150 kg. Perigee: 400 km. Apogee: 417 km. Inclination: 65.0 deg. Duration: 603.00 days.

Third launch of new EORSAT, final of three stationed at 120 degree intervals on the same orbit with a 0 degree ascending node. Ocean surveillance.


17 September 1993 Cosmos 2264 Program: EORSAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 3,150 kg. Perigee: 401 km. Apogee: 417 km. Inclination: 65.0 deg. Duration: 564.00 days.

EORSAT, first of three to be stationed at 120 degree intervals on the same orbit with a 215 degree ascending node. However cutbacks in program resulted in the constellation not being completed. Ocean surveillance.


02 November 1994 Cosmos 2293 Program: EORSAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 3,150 kg. Perigee: 402 km. Apogee: 418 km. Inclination: 65.0 deg. Duration: 497.00 days.

Second launch of new EORSAT, second of three to be stationed at 120 degree intervals on the same orbit with a 215 degree ascending node. However cutbacks in program resulted in the constellation not being completed. Ocean surveillance.


08 June 1995 Cosmos 2313 Program: EORSAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 3,150 kg. Perigee: 410 km. Apogee: 419 km. Inclination: 65.0 deg. Duration: 685.00 days.

EORSAT, first of three to be stationed at 120 degree intervals on the same orbit with a 143 degree ascending node. However cutbacks in program resulted in the constellation not being completed. Ocean surveillance.


20 December 1995 Cosmos 2326 Program: EORSAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 3,150 kg. Perigee: 406 km. Apogee: 415 km. Inclination: 65.0 deg. Duration: 660.00 days.

EORSAT, placed in 215 degree ascending node orbital slot. Ocean surveillance; also performed astrophysics research.


11 December 1996 Cosmos 2335 Program: EORSAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 3,150 kg. Perigee: 403 km. Apogee: 418 km. Inclination: 65.0 deg.

EORSAT, second of three to be stationed at 120 degree intervals on the same orbit with a 143 degree ascending node. However cutbacks in program resulted in the constellation not being completed. Still in operation as of December 1997.


15 December 1997 Cosmos 2347 Program: EORSAT. Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Mass: 3,150 kg. Perigee: 403 km. Apogee: 417 km. Inclination: 65.0 deg.

EORSAT, in the 217 degree ascending node slot. Still in operation as of December 1997.


26 December 1999 Cosmos 2367 Launch Site: Baikonur . Launch Vehicle: Tsyklon 2. Perigee: 404 km. Apogee: 418 km. Inclination: 65.0 deg.

Passive naval electronic intelligence satellite. The satellite was placed in an initial 147 km x 442 km orbit at 65 degree inclination. The US-PM's propulsion module fired at apogee to circularize the orbit. Replaced the only previous remaining US-PM satellite which ended operations in November and reentered earlier in December 1999.



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Last update 12 March 2001.
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