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Yantar-4K1

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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

AKA: 11F693;Kobalt;Kobalt-M;Oktant;Oktant, Kobalt-M;Orlets-1. Status: Operational 1979. First Launch: 1979-04-27. Last Launch: 2015-06-05. Number: 104 . Gross mass: 6,600 kg (14,500 lb). Height: 6.30 m (20.60 ft).

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.

Photo Gallery

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Cosmos 2410 Credit: Manufacturer Image

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Yantar-2K Credit: Manufacturer Image

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• US Project reassigned; R-36-O booster development approved; Yantar-2K and Zvevda 7K-VI approved. - . Nation: Russia. Related Persons: Kozlov. Spacecraft: Soyuz VI, US-A, US-P, Yantar-2K, Yantar-4K1.

  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 Kozlov's 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.

• Council of Chief Designers reconsiders Yantar Soviet reconnsat designs - . Nation: Russia. Spacecraft: Orlets-1, Orlets-2, Yantar-2K, Yantar-4K1, Yantar-4K2, Yantar-4KS1, Yantar-6K, Yantar-6KS.

  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.

• Cosmos 1097 - . Payload: Yantar-4K1 s/n 1. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.80 deg. Period: 89.50 min. 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..

• Cosmos 1177 - . Payload: Yantar-4K1 s/n 2. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.50 min. 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..

• Cosmos 1218 - . Payload: Yantar-4K1 s/n 3. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 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.

• Cosmos 1298 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.80 deg. Period: 89.40 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1347 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 70.40 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1377 - . Payload: Yantar-4K1 s/n 215. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.90 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..

• Yantar-4K1 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: UNKS. Spacecraft Bus: Yantar. Spacecraft: Yantar-4K1. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1399 - . Payload: Yantar-4K1 s/n 216. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.70 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1424 - . Payload: Yantar-4K1 s/n 217. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.70 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1442 - . Payload: Yantar-4K1 s/n 248. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1457 - . Payload: Yantar-4K1 s/n 214. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 70.40 deg. Period: 89.70 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1466 - . Payload: Yantar-4K1 s/n 250. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.70 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1489 - . Payload: Yantar-4K1 s/n 252. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.70 deg. Period: 89.20 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1496 - . Payload: Yantar-4K1 s/n 251. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1504 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.30 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1511 - . Payload: Yantar-4K1 s/n 249. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 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.

• Cosmos 1532 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.70 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1539 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1548 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.50 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1558 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.10 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1576 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.70 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1585 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.70 deg. Period: 89.20 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1599 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 88.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1611 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.70 deg. Period: 89.20 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1616 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.80 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1630 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1647 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.40 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1654 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.60 min. High resolution photo reconnaissance. Spacecraft failed. Blown up in orbit on June 21..

• Cosmos 1676 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.50 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1679 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1699 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.50 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1706 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.50 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1724 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.50 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1734 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1739 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.50 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1756 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 88.90 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1764 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1773 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1792 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.40 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1807 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.80 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1811 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.70 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1824 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.70 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1835 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.80 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1847 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.40 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1866 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 94.50 min. High resolution photo reconnaissance. Engine failure prematurely depleted fuel supply. Blown up in orbit on July 26..

• Cosmos 1886 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.40 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1893 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.40 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1901 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.70 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1916 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.90 deg. Period: 89.70 min. High resolution photo reconnaissance. Spacecraft failed. Blown up in orbit on February 27..

• Cosmos 1935 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.50 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1942 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.70 min.

• Cosmos 1955 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.80 deg. Period: 89.80 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1963 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.80 deg. Period: 89.80 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1969 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1984 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.80 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 1993 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.80 deg. Period: 89.70 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2005 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.80 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2018 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.90 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2020 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 64.80 deg. Period: 89.10 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2030 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.60 min. High resolution photo reconnaissance. Spacecraft failed. Blown up in orbit on July 28..

• Cosmos 2047 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.50 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2052 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.50 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2057 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.80 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Yantar-4K1 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: UNKS. Spacecraft Bus: Yantar. Spacecraft: Yantar-4K1. High resolution photo reconnaissance mission..

• Cosmos 2077 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.90 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Yantar-4K1 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: UNKS. Spacecraft Bus: Yantar. Spacecraft: Yantar-4K1. High resolution photo reconnaissance mission..

• Cosmos 2089 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.80 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2102 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.90 deg. Period: 89.80 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2108 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.80 deg. Period: 89.00 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2124 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.80 deg. Period: 89.50 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2138 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2149 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.10 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2156 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2171 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.80 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2175 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2182 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.00 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2186 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.80 deg. Period: 89.70 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2203 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.80 deg. Period: 89.50 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2210 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2220 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2231 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2240 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 62.80 deg. Period: 89.60 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2259 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.70 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2274 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.00 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.

• Cosmos 2283 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.42 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2311 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.40 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2314 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.40 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Cosmos 2331 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.00 min. High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission..

• Yantar-4K1 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: VKS. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. Spacecraft: Yantar-4K1. High resolution photo reconnaissance mission..

• Cosmos 2348 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MO. Manufacturer: Kozlov bureau. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.40 min. 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..

• Cosmos 2358 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MO. Manufacturer: Kozlov bureau. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.30 min. 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..

• Cosmos 2365 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MO. Manufacturer: Kozlov bureau. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.73 min. 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..

• Cosmos 2377 - . Mass: 6,500 kg (14,300 lb). Nation: Russia. Agency: MO. Manufacturer: Kozlov bureau. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 88.80 min. The Kobalt-class imaging satellite landed on October 10, 2001 after a four month mission..

• Cosmos 2387 - . Mass: 6,700 kg (14,700 lb). Nation: Russia. Agency: KVR. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.20 min. 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..

• Cosmos 2410 - . Mass: 6,700 kg (14,700 lb). Nation: Russia. Agency: KVR. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 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.

• Cosmos 2420 - . Payload: Yantar 4K-2M. Mass: 6,700 kg (14,700 lb). Nation: Russia. Agency: VKS. Manufacturer: Kozlov bureau. Class: Surveillance. Type: Military Radarsat. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.80 min. 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..

• Cosmos 2427 - . Mass: 6,700 kg (14,700 lb). Nation: Russia. Agency: VKS. Manufacturer: Kozlov bureau. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 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.

• Cosmos 2445 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: KVR. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.60 min. 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..

• Cosmos 2450 - . Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: KVR. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.10 deg. Period: 89.10 min. Return film capsule optical reconnaisance satellite. Landed on 27 July..

• Cosmos 2462 - . Mass: 6,900 kg (15,200 lb). Nation: Russia. Agency: KVR. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. 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: 67.20 deg. Period: 89.00 min. 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..

• Cosmos 2472 - . Mass: 6,700 kg (14,700 lb). Nation: Russia. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. Spacecraft: Yantar-4K1. Duration: 191.20 days. Decay Date: 2011-10-24 . USAF Sat Cat: 37726 . COSPAR: 2011-028A. Apogee: 338 km (210 mi). Perigee: 217 km (134 mi). Inclination: 81.40 deg. Period: 88.90 min.

  Optical surveillance satellite. First launch into this inclination since 1994. Probably jettisoned two recoverable film capsules during the mission. Six reboosts during the mission maintained a 210 km x 250 km observation orbit. The main spacecraft landed at 20:48 GMT on 24 October.

• Cosmos 2480 - . Payload: Kobalt-M. Mass: 6,700 kg (14,700 lb). Nation: Russia. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. Spacecraft: Yantar-4K1. Decay Date: 2012-09-24 . USAF Sat Cat: 38335 . COSPAR: 2012-024A. Apogee: 280 km (170 mi). Perigee: 199 km (123 mi). Inclination: 81.40 deg. Period: 89.30 min. Kobalt-M film reconnaisance satellite. A deorbit burn on 24 September at 16:39 GMT was followed by separation of the service module and reentry of the pressurized main payload section which contained cameras and film. Landed at 17:03 GMT..

• Cosmos 2495 - . Payload: Kobalt-M. Mass: 6,700 kg (14,700 lb). Nation: Russia. Class: Surveillance. Type: Surveillance satellite. Spacecraft Bus: Yantar. Spacecraft: Yantar-4K1. Decay Date: 2014-09-03 . USAF Sat Cat: 39732 . COSPAR: 2014-025A. Apogee: 253 km (157 mi). Perigee: 203 km (126 mi). Inclination: 81.40 deg. Period: 89.06 min. Kobalt-M spy satellite, serial number 564. Ninth launch of an 11F695M Kobalt-M film-return satellite and the first to use the Soyuz-2-1A rocket instead of the older Soyuz-U. By May 17 the satellite was in a 207 x 248 km x 81.4 deg orbit..

• Cosmos 2505 - . Mass: 6,700 kg (14,700 lb). Nation: Russia. Class: Surveillance. Type: Surveillance satellite. Spacecraft Bus: Yantar. Spacecraft: Yantar-4K1. Decay Date: 2015-09-18 . USAF Sat Cat: 40667 . COSPAR: 2015-027A. Apogee: 285 km (177 mi). Perigee: 177 km (109 mi). Inclination: 81.40 deg.

  Kobal't-M spy satellite s/n 565, maneuvered on 8 and 13 June from an initial orbit of 177 km x 285 km x 81.4 deg to 203 km x 264 km. Current version of the Yantar satellite which returns its main section, with film and camera, to Earth at the end of its flight. It also carried two small ejectable film canisters which can return some data to Earth during the mission.