Encyclopedia Astronautica
Yantar-4K1


reccetyp.jpg
Soviet Reconnsats
Soviet reconnaissance satellites. Top row: Zenit-2, Zenit-4, Advanced Zenit with aerodynamic orientation; Middle Row: Yantar 1K, Yantar 2K, Orlets-1 with multiple return capsules; bottom row, Buran-serviced pallet-based satellite; Yantar 4KS electrooptical
Russian film-return military surveillance satellite. Operational, first launch 1979.04.27. Flight trials of the Yantar-2K indicated the satellite was not capable of providing strategic warning of attack. The high resolution Yantar-4K provided that capability, while still capable of being launched by the existing Soyuz-U launch vehicle. Lifetime was 45 days. Two small capsules could return film an an interim basis before the main spacecraft with film returned to earth.

A meeting of the Council of Chief Designers at TsSKB in May 1977 reviewed alternative approaches. Three additional variants were to be developed, one of them the high resolution Yantar-4K. The project was to be implemented in two phases: the Yantar-4K1, launched by the existing Soyuz-U launch vehicle, and the Yantar-4K2, to be launched by the new more powerful Zenit launch vehicle.

The Yantar-4K1 would increase the satellite's operational lifetime by 50%, to 45 days, and had an improved camera system, the PO Krasnogorskiy Zavod's Zhemchug-18. The -4K could image targets 60 degrees left or right of the ground track and more film than earlier versions. Externally the spacecraft were difficult to distinguish, and the masses were essentially the same. Therefore the same Soyuz 11A511U rocket and 11S516 payload fairing could be used for the Yantar-4K1.

The project went smoothly and rapidly. The first flight model was ready only two years later. The first launch in the flight trials was in April 1979, for 30 days. A second full-duration flight a year later was also successful, leading to the acceptance test flight in October 1980, also without problem. Yantar-4K1 was accepted into service in 1982 with the code name Oktan. Due to capacity problems as TsKB in Samara, production was handed over to KB Arsenal from 1984.

The Yantar-4K1 ultimately replaced the Zenit reconnaissance satellite series, with the final military flight of the Zenit in October 1980. Zenit civilian models continued in use after the retirement of the Yantar-4K1 (Oblik, Resurs F-1 and F-2). From 1984 Yantar-4K1 was flown for durations of up to 60 days. Launches continued into the 21st Century. Typical orbital profile was: inclination 64.9, 67.1, or 70 degrees with altitude of 170-340 km. Transmission frequency observed in the West was 240.5 PCM-FM.

After 2000, improved Yantar-4K1's were flown, and referred to in the Russian press as Kobalt-M's. The Kobalt code name had been applied originally to the cancelled Yantar-4K2 spacecraft which was to have been launched by the Zenit-2 booster.

AKA: Orlets-1; 11F693; Oktant; Kobalt-M.
Gross mass: 6,600 kg (14,500 lb).
Height: 6.30 m (20.60 ft).
First Launch: 1979.04.27.
Last Launch: 2011.06.27.
Number: 101 .


Associated Countries
See also
  • Soyuz The Russian Soyuz spacecraft has been the longest-lived, most adaptable, and most successful manned spacecraft design. In production for fifty years, more than 240 have been built and flown on a wide range of missions. The design will remain in use with the international space station well into the 21st century, providing the only manned access to the station after the retirement of the shuttle in 2011. More...

Associated Launch Vehicles
  • Soyuz Russian orbital launch vehicle. The world's first ICBM became the most often used and most reliable launch vehicle in history. The original core+four strap-on booster missile had a small third stage added to produce the Vostok launch vehicle, with a payload of 5 metric tons. Addition of a larger third stage produced the Voskhod/Soyuz vehicle, with a payload over 6 metric tons. Using this with a fourth stage, the resulting Molniya booster placed communications satellites and early lunar and planetary probes in higher energy trajectories. By the year 2000 over 1,628 had been launched with an unmatched success rate of 97.5% for production models. Improved models providing commercial launch services for international customers entered service in the new millenium, and a new launch pad at Kourou was to be inaugurated in 2009. It appeared that the R-7 could easily still be in service 70 years after its first launch. More...
  • Soyuz 11A511U Russian standardised man-rated orbital launch vehicle derived from the original R-7 ICBM of 1957. It has been launched in greater numbers than any orbital launch vehicle in history. Not coincidentally, it has been the most reliable as well. After over 40 years service in Russia, ESA built a new launch pad at Kourou which will keep it in service from three launch sites in three countries well into the mid-21st Century. More...

Associated Manufacturers and Agencies
  • MOM Russian agency overseeing development of spacecraft. Ministry of General Machine Building (Moskva, Russia), Moscow, Russia. More...
  • Kozlov Russian manufacturer of rockets and spacecraft. Kozlov Central Specialized Design Bureau, Samara, Russia. More...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.
  • McDowell, Jonathan, Jonathan's Space Report (Internet Newsletter), Harvard University, Weekly, 1989 to Present. Web Address when accessed: here.
  • JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Web Address when accessed: here.
  • Sorokin, Vladislav, "'Yantarnaya istoriya'", Novosti Kosmonavtiki, 1997, Issue 17, page 57.
  • Voevodin, Sergey A, "Sergey A. Voevodin's Reports", VSA072 - Space Apparatus, Web Address when accessed: here.
  • Lissov, I, and Tarasenko, M, "Zapushchen Kosmos-2348", Novosti Kosmonavtiki, 1997, Issue 26, page 33.
  • NASA GSFC Orbital Parameters,
  • McDowell, Jonathan, Launch Log, October 1998. Web Address when accessed: here.
  • National Space Science Center Planetary Page, As of 19 February 1999.. Web Address when accessed: here.
  • Sorokin, V, "Yantarnaya istoriya-2", Novosti kosmonavtiki, No. 11, 1999, p. 71..
  • Siddiqi, Asif A, The Soviet Space Race With Apollo, University Press of Florida, 2003.
  • NASA/GSFC Orbital Information Group Website, Web Address when accessed: here.
  • Space-Launcher.com, Orbital Report News Agency. Web Address when accessed: here.

Associated Launch Sites
  • Baikonur Russia's largest cosmodrome, the only one used for manned launches and with facilities for the larger Proton, N1, and Energia launch vehicles. The spaceport ended up on foreign soil after the break-up of Soviet Union. The official designations NIIP-5 and GIK-5 are used in official Soviet histories. It was also universally referred to as Tyuratam by both Soviet military staff and engineers, and the US intelligence agencies. Since the dissolution of the Soviet Union the Russian Federation has insisted on continued use of the old Soviet 'public' name of Baikonur. In its Kazakh (Kazak) version this is rendered Baykonur. More...
  • Plesetsk Plesetsk was the Soviet Union's northern cosmodrome, used for polar orbit launches of mainly military satellites, and was at one time the busiest launch centre in the world. The collapse of the Soviet Union put the main launch site of Baikonur in Kazakh territory. It now seems that once the Proton rocket is retired, Baikonur will be abandoned and Plesetsk will be Russia's primary launch centre. Upgrades to existing launch facilities will allow advanced versions of the Soyuz rocket and the new Angara launch vehicle to be launched from Plesetsk. Plesetsk's major drawback was the lower net payload in geosynchronous orbit from a northern latitude launch site. However Russia is planning to remove the disadvantage by looping geosynchronous satellites around the moon, using lunar gravity to make the necessary orbital plane change. More...
  • Plesetsk LC41/1 R-7 launch complex. Code named 'Lesobaza', this was the first complex completed at Plesetsk, being declared ready for military service with the R-7A ICBM in November 1959. The complex followed the design of the protoype facility built at Area 31 of Baikonur and included its own residential area for military personnel and assembly buildings for launchers and payloads. More...
  • Plesetsk LC16/2 R-7 launch complex. Complex 16 was the second R-7A ICBM launch complex to become operationall at Plesetsk, in 1960. In 1969, Pad 2 was cannibalized to upgrade the Area 1 facility in Baikonur. Pad 2 was not again brought into operation until 1979. It was then completely renovated as a space launch pad for Molniya 8K78M/Soyuz 11A511U class vehicles. The first launch was on 19 February 1981, and it continued in use in this role into the 21st Century. More...

Yantar-4K1 Chronology


1967 July 21 - . LV Family: R-7; Tsiklon.
  • US Project reassigned; R-36-O booster development approved; Yantar-2K and Zvevda 7K-VI approved. - . Nation: USSR. Related Persons: Kozlov. Spacecraft: US-A; US-P; Yantar-2K; Yantar-4K1; Soyuz VI. Decree 715-240 'On the Creation of Space Systems for Naval Reconnaissance Comprising the US sat and the R-36-based booster -further work on the US naval reconnaissance satellite, approval of work on the Yantar-2K, and course of work on 7K-VI Zvezda'.

    An entire family of Yantar spacecraft was proposed by Kozlovís design bureau during the initial development; information on two film return models has been declassified. Yantar was initially derived from the Soyuz spacecraft, including systems developed for the Soyuz VI military model. During design and development this changed until it had very little in common with Soyuz.

    Following numerous problems in the first flight tests of the Soyuz 7K-OK, Kozlov ordered a complete redesign of the 7K-VI manned military spacecraft. The new spacecraft, with a crew of two, would have a total mass of 6.6 tonnes and could operate for a month in orbit. The new design switched the positions of the Soyuz descent module and the orbital modules and was 300 kg too heavy for the standard 11A511 launch vehicle. Therefore Kozlov designed a new variant of the Soyuz launch vehicle, the 11A511M. The project was approved by the Central Committee of the Communist Party, with first flight to be in 1968 and operations to begin in 1969. The booster design, with unknown changes to the basic Soyuz, did not go into full production.


1977 May - .
  • Council of Chief Designers reconsiders Yantar Soviet reconnsat designs - . Nation: USSR. Spacecraft: Yantar-2K; Yantar-4K1; Yantar-4K2; Orlets-1; Orlets-2; Yantar-6K; Yantar-6KS; Yantar-4KS1. Flight trials of the Yantar-2K indicated the satellite was not capable of providing strategic warning of attack. The planned Yantar-6K series, in development since 1969, were overweight and behind schedule. A meeting of the Council of Chief Designers at TsSKB reviewed alternative approaches. It was decided that three variants of the Yantar-2K were to be developed, one of them the high resolution Yantar-4K.

1979 April 27 - . 17:15 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1097 - . Payload: Yantar-4K1 s/n 1. Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 30.00 days. Decay Date: 1979-05-27 . USAF Sat Cat: 11348 . COSPAR: 1979-037A. Apogee: 331 km (205 mi). Perigee: 173 km (107 mi). Inclination: 62.8000 deg. Period: 89.50 min. Summary: First flight test of Yantar-4K1 satellite. Returned as planned after 30 days. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1980 April 29 - . 13:30 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1177 - . Payload: Yantar-4K1 s/n 2. Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 44.00 days. Decay Date: 1980-06-12 . USAF Sat Cat: 11789 . COSPAR: 1980-035A. Apogee: 331 km (205 mi). Perigee: 167 km (103 mi). Inclination: 67.2000 deg. Period: 89.50 min. Summary: Second flight test of Yantar-4K1 satellite. Demonstrated full spacecraft design duration of 45 days. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1980 October 30 - . 10:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1218 - . Payload: Yantar-4K1 s/n 3. Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 43.00 days. Decay Date: 1980-12-12 . USAF Sat Cat: 12039 . COSPAR: 1980-086A. Apogee: 285 km (177 mi). Perigee: 158 km (98 mi). Inclination: 64.9000 deg. Period: 88.90 min. Successful state acceptance test flight of Yantar-4K1 satellite. Led to Yantar-4K1 acceptance for Red Army service the following year. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

1981 August 21 - . 10:20 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1298 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 42.00 days. Decay Date: 1981-10-02 . USAF Sat Cat: 12776 . COSPAR: 1981-080A. Apogee: 328 km (203 mi). Perigee: 170 km (100 mi). Inclination: 64.8000 deg. Period: 89.40 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1982 April 2 - . 10:15 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1347 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 49.00 days. Decay Date: 1982-05-21 . USAF Sat Cat: 13122 . COSPAR: 1982-028A. Apogee: 337 km (209 mi). Perigee: 172 km (106 mi). Inclination: 70.4000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1982 June 8 - . 12:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1377 - . Payload: Yantar-4K1 s/n 215. Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 44.00 days. Decay Date: 1982-07-22 . USAF Sat Cat: 13265 . COSPAR: 1982-057A. Apogee: 363 km (225 mi). Perigee: 173 km (107 mi). Inclination: 64.9000 deg. Period: 89.90 min. Summary: Photo surveillance; 2 small film capsules recovered in course of flight and main reentry capsule with remaining film, camera, and computer systems at end of flight..

1982 June 12 - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz 11A511U. FAILURE: Failure. Failed Stage: U.
  • Yantar-4K1 - . Nation: USSR. Agency: UNKS. Spacecraft: Yantar-4K1. COSPAR: F820612A. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1982 August 4 - . 11:30 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1399 - . Payload: Yantar-4K1 s/n 216. Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 43.00 days. Decay Date: 1982-09-16 . USAF Sat Cat: 13399 . COSPAR: 1982-078A. Apogee: 344 km (213 mi). Perigee: 171 km (106 mi). Inclination: 64.9000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1982 December 16 - . 10:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1424 - . Payload: Yantar-4K1 s/n 217. Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 43.00 days. Decay Date: 1983-01-28 . USAF Sat Cat: 13725 . COSPAR: 1982-117A. Apogee: 349 km (216 mi). Perigee: 171 km (106 mi). Inclination: 64.9000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1983 February 25 - . 12:45 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC41/1. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1442 - . Payload: Yantar-4K1 s/n 248. Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 45.00 days. Decay Date: 1983-04-11 . USAF Sat Cat: 13850 . COSPAR: 1983-012A. Apogee: 339 km (210 mi). Perigee: 169 km (105 mi). Inclination: 67.1000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1983 April 26 - . 10:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1457 - . Payload: Yantar-4K1 s/n 214. Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 45.00 days. Decay Date: 1983-06-08 . USAF Sat Cat: 14039 . COSPAR: 1983-039A. Apogee: 354 km (219 mi). Perigee: 164 km (101 mi). Inclination: 70.4000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1983 May 26 - . 12:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1466 - . Payload: Yantar-4K1 s/n 250. Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 41.00 days. Decay Date: 1983-07-06 . USAF Sat Cat: 14089 . COSPAR: 1983-050A. Apogee: 315 km (195 mi). Perigee: 166 km (103 mi). Inclination: 64.9000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1983 August 10 - . 13:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1489 - . Payload: Yantar-4K1 s/n 252. Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 44.00 days. Decay Date: 1983-09-23 . USAF Sat Cat: 14256 . COSPAR: 1983-083A. Apogee: 299 km (185 mi). Perigee: 173 km (107 mi). Inclination: 64.7000 deg. Period: 89.20 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1983 September 7 - . 13:24 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1496 - . Payload: Yantar-4K1 s/n 251. Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 42.00 days. Decay Date: 1983-10-19 . USAF Sat Cat: 14326 . COSPAR: 1983-093A. Apogee: 338 km (210 mi). Perigee: 167 km (103 mi). Inclination: 67.2000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1983 October 14 - . 10:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1504 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 53.00 days. Decay Date: 1983-12-06 . USAF Sat Cat: 14403 . COSPAR: 1983-104A. Apogee: 304 km (188 mi). Perigee: 172 km (106 mi). Inclination: 64.9000 deg. Period: 89.30 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1983 November 30 - . 13:45 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC41/1. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1511 - . Payload: Yantar-4K1 s/n 249. Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 44.00 days. Decay Date: 1984-01-13 . USAF Sat Cat: 14530 . COSPAR: 1983-117A. Apogee: 332 km (206 mi). Perigee: 182 km (113 mi). Inclination: 67.1000 deg. Period: 89.60 min. Photo surveillance; 2 small film capsules recovered in course of flight and main reentry capsule with remaining film, camera, and computer systems at end of flight. Final flight of the Yantar-2K/Yantar-4K1 series. All 12 Yantar-4K1 flights were completely successful.

1984 January 13 - . 14:40 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1532 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 44.00 days. Decay Date: 1984-02-26 . USAF Sat Cat: 14634 . COSPAR: 1984-004A. Apogee: 357 km (221 mi). Perigee: 163 km (101 mi). Inclination: 67.1000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1984 February 28 - . 13:59 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1539 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 41.00 days. Decay Date: 1984-04-09 . USAF Sat Cat: 14763 . COSPAR: 1984-020A. Apogee: 338 km (210 mi). Perigee: 167 km (103 mi). Inclination: 67.2000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1984 April 10 - . 14:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1548 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 45.00 days. Decay Date: 1984-05-25 . USAF Sat Cat: 14902 . COSPAR: 1984-036A. Apogee: 331 km (205 mi). Perigee: 165 km (102 mi). Inclination: 67.2000 deg. Period: 89.50 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1984 May 25 - . 11:30 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1558 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 44.00 days. Decay Date: 1984-07-08 . USAF Sat Cat: 14993 . COSPAR: 1984-050A. Apogee: 293 km (182 mi). Perigee: 163 km (101 mi). Inclination: 67.1000 deg. Period: 89.10 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1984 June 26 - . 15:35 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1576 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1984-08-24 . USAF Sat Cat: 15070 . COSPAR: 1984-066A. Apogee: 348 km (216 mi). Perigee: 167 km (103 mi). Inclination: 67.1000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1984 July 31 - . 12:29 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1585 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1984-09-28 . USAF Sat Cat: 15142 . COSPAR: 1984-077A. Apogee: 300 km (180 mi). Perigee: 172 km (106 mi). Inclination: 64.7000 deg. Period: 89.20 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1984 September 25 - . 14:30 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1599 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 56.00 days. Decay Date: 1984-11-20 . USAF Sat Cat: 15318 . COSPAR: 1984-102A. Apogee: 247 km (153 mi). Perigee: 164 km (101 mi). Inclination: 67.1000 deg. Period: 88.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1984 November 21 - . 10:30 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1611 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 51.00 days. Decay Date: 1985-01-11 . USAF Sat Cat: 15403 . COSPAR: 1984-119A. Apogee: 299 km (185 mi). Perigee: 172 km (106 mi). Inclination: 64.7000 deg. Period: 89.20 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1985 January 9 - . 10:45 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1616 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 54.00 days. Decay Date: 1985-03-04 . USAF Sat Cat: 15467 . COSPAR: 1985-002A. Apogee: 356 km (221 mi). Perigee: 171 km (106 mi). Inclination: 64.9000 deg. Period: 89.80 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1985 February 27 - . 11:10 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1630 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 55.00 days. Decay Date: 1985-04-23 . USAF Sat Cat: 15582 . COSPAR: 1985-017A. Apogee: 332 km (206 mi). Perigee: 173 km (107 mi). Inclination: 64.9000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1985 April 19 - . 14:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1647 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 53.00 days. Decay Date: 1985-06-11 . USAF Sat Cat: 15655 . COSPAR: 1985-031A. Apogee: 321 km (199 mi). Perigee: 167 km (103 mi). Inclination: 67.1000 deg. Period: 89.40 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1985 May 23 - . 12:40 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1654 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 29.00 days. Decay Date: 1985-06-30 . USAF Sat Cat: 15734 . COSPAR: 1985-039A. Apogee: 341 km (211 mi). Perigee: 170 km (100 mi). Inclination: 64.9000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance. Spacecraft failed. Blown up in orbit on June 21..

1985 August 16 - . 15:10 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1676 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1985-10-14 . USAF Sat Cat: 15959 . COSPAR: 1985-072A. Apogee: 332 km (206 mi). Perigee: 169 km (105 mi). Inclination: 67.1000 deg. Period: 89.50 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1985 August 29 - . 11:33 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1679 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 50.00 days. Decay Date: 1985-10-18 . USAF Sat Cat: 15999 . COSPAR: 1985-078A. Apogee: 341 km (211 mi). Perigee: 172 km (106 mi). Inclination: 64.9000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1985 October 25 - . 14:40 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1699 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1985-12-23 . USAF Sat Cat: 16198 . COSPAR: 1985-101A. Apogee: 335 km (208 mi). Perigee: 166 km (103 mi). Inclination: 67.1000 deg. Period: 89.50 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1985 December 11 - . 14:40 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1706 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 60.00 days. Decay Date: 1986-02-09 . USAF Sat Cat: 16306 . COSPAR: 1985-112A. Apogee: 323 km (200 mi). Perigee: 175 km (108 mi). Inclination: 67.1000 deg. Period: 89.50 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1986 January 15 - . 14:20 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1724 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1986-03-15 . USAF Sat Cat: 16490 . COSPAR: 1986-004A. Apogee: 330 km (200 mi). Perigee: 167 km (103 mi). Inclination: 67.1000 deg. Period: 89.50 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1986 February 26 - . 13:40 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1734 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1986-04-26 . USAF Sat Cat: 16618 . COSPAR: 1986-020A. Apogee: 343 km (213 mi). Perigee: 165 km (102 mi). Inclination: 67.1000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1986 April 9 - . 08:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1739 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1986-06-07 . USAF Sat Cat: 16677 . COSPAR: 1986-028A. Apogee: 326 km (202 mi). Perigee: 171 km (106 mi). Inclination: 64.9000 deg. Period: 89.50 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1986 June 6 - . 12:40 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1756 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1986-08-04 . USAF Sat Cat: 16767 . COSPAR: 1986-043A. Apogee: 268 km (166 mi). Perigee: 172 km (106 mi). Inclination: 64.9000 deg. Period: 88.90 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1986 July 17 - . 12:30 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1764 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 56.00 days. Decay Date: 1986-09-11 . USAF Sat Cat: 16861 . COSPAR: 1986-053A. Apogee: 339 km (210 mi). Perigee: 171 km (106 mi). Inclination: 64.9000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1986 August 27 - . 11:40 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1773 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 55.00 days. Decay Date: 1986-10-21 . USAF Sat Cat: 16920 . COSPAR: 1986-064A. Apogee: 339 km (210 mi). Perigee: 171 km (106 mi). Inclination: 64.9000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1986 November 13 - . 10:59 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1792 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 53.00 days. Decay Date: 1987-01-05 . USAF Sat Cat: 17068 . COSPAR: 1986-087A. Apogee: 309 km (192 mi). Perigee: 184 km (114 mi). Inclination: 64.9000 deg. Period: 89.40 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1986 December 16 - . 14:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1807 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 38.00 days. Decay Date: 1987-01-23 . USAF Sat Cat: 17217 . COSPAR: 1986-099A. Apogee: 366 km (227 mi). Perigee: 165 km (102 mi). Inclination: 67.1000 deg. Period: 89.80 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1987 January 9 - . 12:38 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1811 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 35.00 days. Decay Date: 1987-02-13 . USAF Sat Cat: 17292 . COSPAR: 1987-002A. Apogee: 345 km (214 mi). Perigee: 169 km (105 mi). Inclination: 64.9000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1987 February 26 - . 13:30 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1824 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 55.00 days. Decay Date: 1987-04-22 . USAF Sat Cat: 17559 . COSPAR: 1987-021A. Apogee: 352 km (218 mi). Perigee: 162 km (100 mi). Inclination: 67.2000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1987 April 9 - . 11:44 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1835 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 56.00 days. Decay Date: 1987-06-04 . USAF Sat Cat: 17849 . COSPAR: 1987-032A. Apogee: 343 km (213 mi). Perigee: 170 km (100 mi). Inclination: 64.8000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1987 May 26 - . 13:39 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1847 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 57.00 days. Decay Date: 1987-07-22 . USAF Sat Cat: 18011 . COSPAR: 1987-046A. Apogee: 315 km (195 mi). Perigee: 175 km (108 mi). Inclination: 67.1000 deg. Period: 89.40 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1987 July 9 - . 16:10 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1866 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 17.00 days. Decay Date: 1987-08-31 . USAF Sat Cat: 18184 . COSPAR: 1987-059A. Apogee: 769 km (477 mi). Perigee: 223 km (138 mi). Inclination: 67.2000 deg. Period: 94.50 min. Summary: High resolution photo reconnaissance. Engine failure prematurely depleted fuel supply. Blown up in orbit on July 26..

1987 September 17 - . 14:59 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1886 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 46.00 days. Decay Date: 1987-11-02 . USAF Sat Cat: 18366 . COSPAR: 1987-081A. Apogee: 321 km (199 mi). Perigee: 170 km (100 mi). Inclination: 67.1000 deg. Period: 89.40 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1987 October 22 - . 14:25 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1893 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 55.00 days. Decay Date: 1987-12-16 . USAF Sat Cat: 18432 . COSPAR: 1987-089A. Apogee: 323 km (200 mi). Perigee: 162 km (100 mi). Inclination: 67.2000 deg. Period: 89.40 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1987 December 14 - . 11:29 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1901 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 51.00 days. Decay Date: 1988-02-03 . USAF Sat Cat: 18666 . COSPAR: 1987-102A. Apogee: 343 km (213 mi). Perigee: 172 km (106 mi). Inclination: 64.9000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1988 February 3 - . 12:15 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1916 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 24.00 days. Decay Date: 1988-02-29 . USAF Sat Cat: 18823 . COSPAR: 1988-007A. Apogee: 352 km (218 mi). Perigee: 168 km (104 mi). Inclination: 64.9000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance. Spacecraft failed. Blown up in orbit on February 27..

1988 March 24 - . 14:10 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1935 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 15.00 days. Decay Date: 1988-04-08 . USAF Sat Cat: 19011 . COSPAR: 1988-025A. Apogee: 330 km (200 mi). Perigee: 166 km (103 mi). Inclination: 67.2000 deg. Period: 89.50 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1988 May 12 - . 14:40 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1942 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 53.00 days. Decay Date: 1988-07-04 . USAF Sat Cat: 19115 . COSPAR: 1988-037A. Apogee: 356 km (221 mi). Perigee: 166 km (103 mi). Inclination: 67.1000 deg. Period: 89.70 min.

1988 June 22 - . 13:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1955 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1988-08-20 . USAF Sat Cat: 19258 . COSPAR: 1988-054A. Apogee: 357 km (221 mi). Perigee: 171 km (106 mi). Inclination: 64.8000 deg. Period: 89.80 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1988 August 16 - . 13:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1963 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 47.00 days. Decay Date: 1988-10-02 . USAF Sat Cat: 19384 . COSPAR: 1988-070A. Apogee: 350 km (210 mi). Perigee: 176 km (109 mi). Inclination: 64.8000 deg. Period: 89.80 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1988 September 15 - . 15:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1969 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1988-11-13 . USAF Sat Cat: 19495 . COSPAR: 1988-084A. Apogee: 344 km (213 mi). Perigee: 165 km (102 mi). Inclination: 67.1000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1988 December 16 - . 19:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1984 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1989-02-13 . USAF Sat Cat: 19705 . COSPAR: 1988-110A. Apogee: 323 km (200 mi). Perigee: 186 km (115 mi). Inclination: 62.8000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1989 January 28 - . 12:30 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1993 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 58.00 days. Decay Date: 1989-03-27 . USAF Sat Cat: 19774 . COSPAR: 1989-007A. Apogee: 347 km (215 mi). Perigee: 171 km (106 mi). Inclination: 64.8000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1989 March 2 - . 18:59 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2005 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 54.00 days. Decay Date: 1989-04-25 . USAF Sat Cat: 19862 . COSPAR: 1989-019A. Apogee: 324 km (201 mi). Perigee: 188 km (116 mi). Inclination: 62.8000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1989 April 20 - . 18:29 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2018 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 60.00 days. Decay Date: 1989-06-19 . USAF Sat Cat: 19938 . COSPAR: 1989-031A. Apogee: 327 km (203 mi). Perigee: 185 km (114 mi). Inclination: 62.9000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1989 May 17 - . 13:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2020 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1989-07-15 . USAF Sat Cat: 19986 . COSPAR: 1989-036A. Apogee: 280 km (170 mi). Perigee: 178 km (110 mi). Inclination: 64.8000 deg. Period: 89.10 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1989 July 12 - . 15:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2030 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 16.00 days. Decay Date: 1989-07-29 . USAF Sat Cat: 20124 . COSPAR: 1989-054A. Apogee: 349 km (216 mi). Perigee: 162 km (100 mi). Inclination: 67.2000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance. Spacecraft failed. Blown up in orbit on July 28..

1989 October 3 - . 14:59 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2047 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 49.00 days. Decay Date: 1989-11-21 . USAF Sat Cat: 20279 . COSPAR: 1989-082A. Apogee: 330 km (200 mi). Perigee: 165 km (102 mi). Inclination: 67.1000 deg. Period: 89.50 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1989 November 30 - . 15:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2052 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 55.00 days. Decay Date: 1990-01-24 . USAF Sat Cat: 20350 . COSPAR: 1989-095A. Apogee: 320 km (190 mi). Perigee: 174 km (108 mi). Inclination: 67.1000 deg. Period: 89.50 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1990 January 25 - . 17:15 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2057 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 53.00 days. Decay Date: 1990-03-19 . USAF Sat Cat: 20457 . COSPAR: 1990-009A. Apogee: 330 km (200 mi). Perigee: 183 km (113 mi). Inclination: 62.8000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1990 April 3 - . 12:02 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. Launch Pad: LC43/pad?. LV Family: R-7. Launch Vehicle: Soyuz 11A511U. FAILURE: Failure. Failed Stage: U.
  • Yantar-4K1 - . Nation: USSR. Agency: UNKS. Spacecraft: Yantar-4K1. COSPAR: F900403A. Summary: High resolution photo reconnaissance mission..

1990 May 7 - . 18:39 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2077 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 58.00 days. Decay Date: 1990-07-04 . USAF Sat Cat: 20604 . COSPAR: 1990-042A. Apogee: 328 km (203 mi). Perigee: 182 km (113 mi). Inclination: 62.9000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1990 July 3 - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U. FAILURE: Failure. Failed Stage: U.
  • Yantar-4K1 - . Nation: USSR. Agency: UNKS. Spacecraft: Yantar-4K1. COSPAR: F900703A. Summary: High resolution photo reconnaissance mission..

1990 August 3 - . 19:45 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2089 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1990-10-01 . USAF Sat Cat: 20732 . COSPAR: 1990-069A. Apogee: 320 km (190 mi). Perigee: 187 km (116 mi). Inclination: 62.8000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1990 October 16 - . 19:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2102 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 57.00 days. Decay Date: 1990-12-12 . USAF Sat Cat: 20909 . COSPAR: 1990-092A. Apogee: 340 km (210 mi). Perigee: 184 km (114 mi). Inclination: 62.9000 deg. Period: 89.80 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1990 December 4 - . 18:30 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2108 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 55.00 days. Decay Date: 1991-01-28 . USAF Sat Cat: 21000 . COSPAR: 1990-109A. Apogee: 289 km (179 mi). Perigee: 164 km (101 mi). Inclination: 62.8000 deg. Period: 89.00 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1991 February 7 - . 18:15 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2124 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1991-04-07 . USAF Sat Cat: 21092 . COSPAR: 1991-008A. Apogee: 316 km (196 mi). Perigee: 186 km (115 mi). Inclination: 62.8000 deg. Period: 89.50 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1991 March 26 - . 13:45 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2138 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1991-05-24 . USAF Sat Cat: 21203 . COSPAR: 1991-023A. Apogee: 343 km (213 mi). Perigee: 161 km (100 mi). Inclination: 67.1000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1991 May 24 - . 15:29 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2149 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 41.00 days. Decay Date: 1991-07-04 . USAF Sat Cat: 21315 . COSPAR: 1991-036A. Apogee: 285 km (177 mi). Perigee: 173 km (107 mi). Inclination: 67.1000 deg. Period: 89.10 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1991 September 19 - . 16:20 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2156 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1991-11-17 . USAF Sat Cat: 21713 . COSPAR: 1991-066A. Apogee: 345 km (214 mi). Perigee: 160 km (90 mi). Inclination: 67.1000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1991 November 20 - . 19:15 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2171 - . Mass: 6,600 kg (14,500 lb). Nation: USSR. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1992-01-17 . USAF Sat Cat: 21787 . COSPAR: 1991-078A. Apogee: 321 km (199 mi). Perigee: 187 km (116 mi). Inclination: 62.8000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1992 January 21 - . 15:00 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2175 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1992-03-20 . USAF Sat Cat: 21844 . COSPAR: 1992-001A. Apogee: 347 km (215 mi). Perigee: 158 km (98 mi). Inclination: 67.1000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1992 April 1 - . 14:18 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2182 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1992-05-30 . USAF Sat Cat: 21920 . COSPAR: 1992-016A. Apogee: 284 km (176 mi). Perigee: 166 km (103 mi). Inclination: 67.1000 deg. Period: 89.00 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1992 May 28 - . 19:09 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2186 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 57.00 days. Decay Date: 1992-07-24 . USAF Sat Cat: 21973 . COSPAR: 1992-029A. Apogee: 327 km (203 mi). Perigee: 187 km (116 mi). Inclination: 62.8000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1992 July 24 - . 19:40 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2203 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 60.00 days. Decay Date: 1992-09-22 . USAF Sat Cat: 22052 . COSPAR: 1992-045A. Apogee: 311 km (193 mi). Perigee: 189 km (117 mi). Inclination: 62.8000 deg. Period: 89.50 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1992 September 22 - . 16:10 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2210 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1992-11-20 . USAF Sat Cat: 22133 . COSPAR: 1992-062A. Apogee: 353 km (219 mi). Perigee: 160 km (90 mi). Inclination: 67.2000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1992 November 20 - . 15:29 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/4. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2220 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 59.00 days. Decay Date: 1993-01-18 . USAF Sat Cat: 22226 . COSPAR: 1992-077A. Apogee: 341 km (211 mi). Perigee: 164 km (101 mi). Inclination: 67.2000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1993 January 19 - . 14:49 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2231 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 65.00 days. Decay Date: 1993-03-25 . USAF Sat Cat: 22317 . COSPAR: 1993-004A. Apogee: 342 km (212 mi). Perigee: 163 km (101 mi). Inclination: 67.2000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1993 April 2 - . 14:30 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2240 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 66.00 days. Decay Date: 1993-06-07 . USAF Sat Cat: 22592 . COSPAR: 1993-021A. Apogee: 320 km (190 mi). Perigee: 188 km (116 mi). Inclination: 62.8000 deg. Period: 89.60 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1993 July 14 - . 16:40 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2259 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 11.00 days. Decay Date: 1993-07-25 . USAF Sat Cat: 22716 . COSPAR: 1993-045A. Apogee: 349 km (216 mi). Perigee: 168 km (104 mi). Inclination: 67.1000 deg. Period: 89.70 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1994 March 17 - . 16:30 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/4. Launch Pad: LC43/4?. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2274 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 65.00 days. Decay Date: 1994-05-21 . USAF Sat Cat: 23033 . COSPAR: 1994-018A. Apogee: 372 km (231 mi). Perigee: 176 km (109 mi). Inclination: 67.0000 deg. Period: 89.70 min. This space object is intended for assignments on behalf of the Ministry of Defense of the Russian Federation. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

1994 July 20 - . 17:35 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/4. Launch Pad: LC43/4?. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2283 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 71.00 days. Decay Date: 1994-09-29 . USAF Sat Cat: 23182 . COSPAR: 1994-042A. Apogee: 313 km (194 mi). Perigee: 179 km (111 mi). Inclination: 67.1000 deg. Period: 89.42 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1995 March 22 - . 16:44 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2311 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 70.00 days. Decay Date: 1995-05-31 . USAF Sat Cat: 23530 . COSPAR: 1995-014A. Apogee: 316 km (196 mi). Perigee: 178 km (110 mi). Inclination: 67.1000 deg. Period: 89.40 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1995 June 28 - . 18:25 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2314 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 70.00 days. Decay Date: 1995-09-06 . USAF Sat Cat: 23601 . COSPAR: 1995-031A. Apogee: 316 km (196 mi). Perigee: 175 km (108 mi). Inclination: 67.1000 deg. Period: 89.40 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1996 March 14 - . 17:40 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/4. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2331 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 89.00 days. Decay Date: 1996-06-11 . USAF Sat Cat: 23818 . COSPAR: 1996-016A. Apogee: 291 km (180 mi). Perigee: 159 km (98 mi). Inclination: 67.1000 deg. Period: 89.00 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

1996 June 20 - . 18:45 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U. FAILURE: Shroud broke up at T+50seconds.. Failed Stage: S.
  • Yantar-4K1 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: VKS. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. COSPAR: F960620A. Summary: High resolution photo reconnaissance mission..

1997 December 15 - . 15:40 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2348 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MO. Manufacturer: Kozlov. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 120.00 days. Decay Date: 1998-04-14 . USAF Sat Cat: 25095 . COSPAR: 1997-080A. Apogee: 361 km (224 mi). Perigee: 175 km (108 mi). Inclination: 67.1000 deg. Period: 89.40 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission. Landed 14 April 1998..

1998 June 24 - . 18:29 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2358 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MO. Manufacturer: Kozlov. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 120.00 days. Decay Date: 1998-10-22 . USAF Sat Cat: 25373 . COSPAR: 1998-038A. Apogee: 316 km (196 mi). Perigee: 167 km (103 mi). Inclination: 67.1000 deg. Period: 89.30 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission. Landed October 22, 1998..

1999 August 18 - . 18:00 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2365 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MO. Manufacturer: Kozlov. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 119.00 days. Decay Date: 1999-12-15 . USAF Sat Cat: 25889 . COSPAR: 1999-044A. Apogee: 338 km (210 mi). Perigee: 184 km (114 mi). Inclination: 67.1000 deg. Period: 89.73 min. Summary: High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission. Landed in Russia on December 15, 1999..

2001 May 29 - . 17:55 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/4. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2377 - . Mass: 6,500 kg (14,300 lb). Nation: Russia. Agency: MO. Manufacturer: Kozlov. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 131.00 days. Decay Date: 2001-10-10 . USAF Sat Cat: 26775 . COSPAR: 2001-022A. Apogee: 261 km (162 mi). Perigee: 170 km (100 mi). Inclination: 67.1000 deg. Period: 88.80 min. Summary: The Kobalt-class imaging satellite landed on October 10, 2001 after a four month mission..

2002 February 25 - . 17:26 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2387 - . Mass: 6,700 kg (14,700 lb). Nation: Russia. Agency: KVR. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 122.00 days. Decay Date: 2002-06-27 . USAF Sat Cat: 27382 . COSPAR: 2002-008A. Apogee: 297 km (184 mi). Perigee: 168 km (104 mi). Inclination: 67.1000 deg. Period: 89.20 min. Summary: The optical reconnaissance satellite carried two small film capsules and a large reentry module. The main recoverable section of Cosmos 2387 landed at about 0230 UTC on June 27..

2004 September 24 - . 16:50 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2410 - . Mass: 6,700 kg (14,700 lb). Nation: Russia. Agency: KVR. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 107.00 days. Decay Date: 2005-01-09 . USAF Sat Cat: 28396 . COSPAR: 2004-038A. Apogee: 348 km (216 mi). Perigee: 208 km (129 mi). Inclination: 67.1000 deg. Period: 90.10 min. Film-return reconnaisance satellite. Maneuvered on October 1 to a 213 x 330 km orbit. Believed to be an improved Yantar-4K1 with a longer lifetime - and given the code name 'Kobalt' previously applied to the defunct Yantar-4K2 system. When re-entry was commanded after only 107 days in orbit, there was speculation that problems had arisen with the satellite. Sources claimed the satellite had some kind of control problem, which was brought under control, and the two smaller film return capsules were successfully returned. But when the control problem reoccurred, it was decided to bring the main re-entry capsule down early. At retrofire, two objects were tracked as having separated from the spacecraft. Russian search teams were unable to locate the capsule after re-entry. Further launches of the satellite were put on hold until a State Commission could determine the causes of the failure.

2006 May 3 - . 17:38 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2420 - . Payload: Yantar 4K-2M. Mass: 6,700 kg (14,700 lb). Nation: Russia. Agency: VKS. Manufacturer: Kozlov. Class: Surveillance. Type: Military surveillance radar satellite. Spacecraft: Yantar-4K1. Decay Date: 2006-07-19 . USAF Sat Cat: 29111 . COSPAR: 2006-017A. Apogee: 349 km (216 mi). Perigee: 178 km (110 mi). Inclination: 67.1000 deg. Period: 89.80 min. Summary: Imaging reconnaissance satellite, probably the second Kobalt-M satellite, built by the Arsenal factory. The satellite carried small film recovery capsules and one large reentry vehicle, recovered at the end of the mission with the camera and more film..

2007 June 7 - . 18:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2427 - . Mass: 6,700 kg (14,700 lb). Nation: Russia. Agency: VKS. Manufacturer: Kozlov. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Duration: 76.13 days. Decay Date: 2007-08-22 . USAF Sat Cat: 31595 . COSPAR: 2007-022A. Apogee: 339 km (210 mi). Perigee: 167 km (103 mi). Inclination: 67.1000 deg. Period: 89.80 min. Recoverable capsule military optical reconnaisance satellite. Orbit was raised on 11 June to 182 km x 354 km; decayed until 19 June, when it was lowered to 175 km x 325 km. On 28 June the orbit was raised to 183 km x 348 km; on 5 July to 169 km x 375 km. Landed at 21:00 GMT on 22 August after a 76-day mission.

2008 November 14 - . 15:50 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2445 - . Nation: Russia. Agency: KVR. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Yantar-4K1. Decay Date: 2009-02-23 . USAF Sat Cat: 33439 . COSPAR: 2008-058A. Apogee: 327 km (203 mi). Perigee: 181 km (112 mi). Inclination: 67.2000 deg. Period: 89.60 min. Summary: Recoverable reconnaisance satellite. Launched annually since 2005 with a typical 75 to 100 day mission, with recovery on an interim basis of two film capsules and final deorbiting of the camera and main film magazine..

2009 April 29 - . 16:58 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2450 - . Nation: Russia. Agency: KVR. Spacecraft: Yantar-4K1. Duration: 90.00 days. Decay Date: 2009-07-27 . USAF Sat Cat: 34871 . COSPAR: 2009-022A. Apogee: 282 km (175 mi). Perigee: 180 km (110 mi). Inclination: 67.1000 deg. Period: 89.10 min. Summary: Return film capsule optical reconnaisance satellite. Landed on 27 July..

2010 April 16 - . 15:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2462 - . Mass: 6,900 kg (15,200 lb). Nation: Russia. Agency: KVR. Class: Surveillance. Type: Surveillance satellite. Spacecraft: Yantar-4K1. Duration: 95.76 days. Decay Date: 2010-07-21 . USAF Sat Cat: 36511 . COSPAR: 2010-014A. Apogee: 270 km (160 mi). Perigee: 180 km (110 mi). Inclination: 67.2000 deg. Period: 89.00 min. Summary: Recoverable optical surveillance satellite. Secondary recoverable film capsules probably recovered on 9 June and 18 July. Main spacecraft reentry vehicle landed at 09:10 GMT on 21 July 2010..

2011 June 27 - . 16:00 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC16/2. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 2472 - . Nation: Russia. Class: Surveillance. Type: Surveillance satellite. Spacecraft: Yantar-4K1. Decay Date: 2011-10-24 . USAF Sat Cat: 37726 . COSPAR: 2011-028A. Apogee: 338 km (210 mi). Perigee: 217 km (134 mi). Inclination: 81.4000 deg. Period: 88.90 min. Summary: Optical surveillance satellite. First launch into this inclination since 1994..

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