1965 December 14 - Launch Vehicle: Soyuz. Test mission Agency: RVSN. Apogee: 1,350 km (830 mi).

1966 March 17 - 10:28 GMT - Launch Vehicle: Soyuz. Cosmos 112 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 214 km (132 mi). Apogee: 664 km (412 mi). Inclination: 72.00 deg. Period: 93.30 min. Area survey photo reconnaissance satellite.

1966 April 6 - 11:40 GMT - Launch Vehicle: Soyuz. Voskhod 11A57 U15001-02 Cosmos 114 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4. Agency: MOM. Perigee: 202 km (125 mi). Apogee: 337 km (209 mi). Inclination: 72.80 deg. Period: 89.80 min. High resolution photo reconnaissance satellite; returned film capsule

1966 May 17 - Launch Vehicle: Soyuz. FAILURE: Failure. Zenit-4 Spacecraft: Zenit-4. Agency: RVSN. High resolution photo reconnaissance mission.

1966 June 17 - 11:00 GMT - Launch Vehicle: Soyuz. Cosmos 121 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4. Agency: MOM. Perigee: 205 km (127 mi). Apogee: 327 km (203 mi). Inclination: 72.80 deg. Period: 89.80 min. High resolution photo reconnaissance satellite; returned film capsule

1966 October 14 - 12:13 GMT - Launch Vehicle: Soyuz. Cosmos 129 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 199 km (123 mi). Apogee: 288 km (178 mi). Inclination: 65.40 deg. Period: 89.40 min. Area survey photo reconnaissance satellite.

1966 November 12 - 09:50 GMT - Launch Vehicle: Soyuz. Cosmos 131 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4. Agency: MOM. Perigee: 202 km (125 mi). Apogee: 335 km (208 mi). Inclination: 72.80 deg. Period: 89.80 min. High resolution photo reconnaissance satellite; returned film capsule

1966 December 19 - 12:00 GMT - Launch Vehicle: Soyuz. Cosmos 136 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 197 km (122 mi). Apogee: 281 km (174 mi). Inclination: 64.60 deg. Period: 89.30 min. Area survey photo reconnaissance satellite. Also carried science package.

1967 January 19 - 12:39 GMT - Launch Vehicle: Soyuz. Cosmos 138 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 190 km (110 mi). Apogee: 273 km (169 mi). Inclination: 64.60 deg. Period: 89.10 min. Area survey photo reconnaissance satellite.

1967 February 8 - 10:19 GMT - Launch Vehicle: Soyuz. Cosmos 141 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4. Agency: MOM. Perigee: 205 km (127 mi). Apogee: 316 km (196 mi). Inclination: 72.90 deg. Period: 89.70 min. High resolution photo reconnaissance satellite; returned film capsule

1967 February 28 - 14:34 GMT - Launch Vehicle: Soyuz. Cosmos 144 Mass: 4,730 kg (10,420 lb). Spacecraft: Meteor. Agency: MOM. Perigee: 574 km (356 mi). Apogee: 644 km (400 mi). Inclination: 81.30 deg. Period: 96.90 min. Investigation of the upper atmosphere and outer space.

1967 March 13 - 12:10 GMT - Launch Vehicle: Soyuz. Cosmos 147 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 195 km (121 mi). Apogee: 298 km (185 mi). Inclination: 64.50 deg. Period: 89.40 min. Area survey photo reconnaissance satellite. Program partially completed.

1967 March 22 - 12:44 GMT - Launch Vehicle: Soyuz. Cosmos 150 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4. Agency: MOM. Perigee: 178 km (110 mi). Apogee: 341 km (211 mi). Inclination: 65.40 deg. Period: 89.60 min. High resolution photo reconnaissance satellite; returned film capsule

1967 April 4 - 14:00 GMT - Launch Vehicle: Soyuz. Cosmos 153 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 199 km (123 mi). Apogee: 279 km (173 mi). Inclination: 64.60 deg. Period: 89.30 min. Area survey photo reconnaissance satellite. Program partially completed. Failure of primary SA-20 camera.

1967 April 27 - 12:50 GMT - Launch Vehicle: Soyuz. Cosmos 156 Mass: 4,730 kg (10,420 lb). Spacecraft: Meteor. Agency: MOM. Perigee: 368 km (228 mi). Apogee: 375 km (233 mi). Inclination: 81.10 deg. Period: 92.00 min. Worked with Cosmos 144. Investigation of the upper atmosphere and outer space.

1967 May 22 - 14:00 GMT - Launch Vehicle: Soyuz. Cosmos 161 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4. Agency: MOM. Perigee: 201 km (124 mi). Apogee: 321 km (199 mi). Inclination: 65.60 deg. Period: 89.70 min. High resolution photo reconnaissance satellite; returned film capsule

1967 June 8 - 13:00 GMT - Launch Vehicle: Soyuz. Voskhod 11A57 Ya15001-13 Cosmos 164 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 185 km (114 mi). Apogee: 317 km (196 mi). Inclination: 65.60 deg. Period: 89.50 min. Area survey photo reconnaissance satellite.

1967 June 20 - Launch Vehicle: Soyuz. FAILURE: Failure. Zenit-4 Spacecraft: Zenit-4. Agency: RVSN. High resolution photo reconnaissance mission.

1967 September 1 - 10:30 GMT - Launch Vehicle: Soyuz. FAILURE: Failure of Block I stage at 296 seconds. Remnants of spacecraft and stage fell near Novaya Zemlya. Zenit-2 11F61 s/n 51 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: RVSN. Area survey photo reconnaissance satellite.

1967 September 26 - 10:20 GMT - Launch Vehicle: Soyuz. Cosmos 180 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 206 km (128 mi). Apogee: 350 km (210 mi). Inclination: 72.80 deg. Period: 90.10 min. Area survey photo reconnaissance satellite.

1967 October 11 - 11:30 GMT - Launch Vehicle: Soyuz. Cosmos 181 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 198 km (123 mi). Apogee: 325 km (201 mi). Inclination: 65.60 deg. Period: 89.70 min. Area survey photo reconnaissance satellite.

1967 November 25 - 11:30 GMT - Launch Vehicle: Soyuz. Cosmos 193 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 745 km (462 mi). Apogee: 756 km (469 mi). Inclination: 74.00 deg. Period: 99.90 min. Area survey photo reconnaissance satellite.

1967 December 16 - 12:00 GMT - Launch Vehicle: Soyuz. Cosmos 195 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 204 km (126 mi). Apogee: 352 km (218 mi). Inclination: 65.60 deg. Period: 90.00 min. Area survey photo reconnaissance satellite.

1968 January 16 - 12:00 GMT - Launch Vehicle: Soyuz. Cosmos 199 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 206 km (128 mi). Apogee: 363 km (225 mi). Inclination: 65.60 deg. Period: 90.20 min. Area survey photo reconnaissance satellite. Unsuccessful mission. Spacecraft failed to separate from Block I stage. Attempt was made to conduct mission without orientation system. APO self destruct system destroyed spacecraft on 126th revolution over Sea of Okhotsk. First generation, low resolution photo surveillance; recovery probably failed.

1968 March 5 - 12:30 GMT - Launch Vehicle: Soyuz. Cosmos 205 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 197 km (122 mi). Apogee: 293 km (182 mi). Inclination: 65.70 deg. Period: 89.40 min. Area survey photo reconnaissance satellite.

1968 April 3 - 11:00 GMT - Launch Vehicle: Soyuz. Cosmos 210 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 200 km (120 mi). Apogee: 373 km (231 mi). Inclination: 81.40 deg. Period: 90.30 min. Area survey photo reconnaissance satellite.

1968 June 1 - 10:50 GMT - Launch Vehicle: Soyuz. Cosmos 223 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 221 km (137 mi). Apogee: 317 km (196 mi). Inclination: 72.90 deg. Period: 89.90 min. Area survey photo reconnaissance satellite.

1968 October 11 - 12:05 GMT - Launch Vehicle: Soyuz. Cosmos 247 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 199 km (123 mi). Apogee: 345 km (214 mi). Inclination: 65.40 deg. Period: 89.90 min. Area survey photo reconnaissance satellite.

1968 November 13 - 12:00 GMT - Launch Vehicle: Soyuz. Cosmos 253 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 216 km (134 mi). Apogee: 337 km (209 mi). Inclination: 65.40 deg. Period: 90.00 min. Area survey photo reconnaissance satellite. Unsuccessful mission. On 13th orbit the SA-20-1 camera's shutter responded to an uncommanded order to open. Radiation levels inside reached 3 times normal levels. 53% of the data was lost.

1968 November 29 - 12:40 GMT - Launch Vehicle: Soyuz. Cosmos 255 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 197 km (122 mi). Apogee: 317 km (196 mi). Inclination: 65.40 deg. Period: 89.60 min. Area survey photo reconnaissance satellite.

1969 January 12 - 12:10 GMT - Launch Vehicle: Soyuz. Cosmos 263 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 200 km (120 mi). Apogee: 325 km (201 mi). Inclination: 65.40 deg. Period: 89.70 min. Area survey photo reconnaissance satellite.

1969 February 1 - 12:11 GMT - Launch Vehicle: Soyuz. FAILURE: Upper stage failure. Meteor Spacecraft: Meteor. Agency: RVSN.

1969 February 25 - 10:20 GMT - Launch Vehicle: Soyuz. Cosmos 266 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 202 km (125 mi). Apogee: 336 km (208 mi). Inclination: 72.00 deg. Period: 89.80 min. Area survey photo reconnaissance satellite.

1969 March 22 - 12:15 GMT - Launch Vehicle: Soyuz. Cosmos 273 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 200 km (120 mi). Apogee: 336 km (208 mi). Inclination: 65.40 deg. Period: 89.80 min. Area survey photo reconnaissance satellite.

1969 April 9 - 13:00 GMT - Launch Vehicle: Soyuz. Cosmos 278 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 198 km (123 mi). Apogee: 310 km (190 mi). Inclination: 65.40 deg. Period: 89.60 min. Area survey photo reconnaissance satellite.

1969 May 13 - 09:15 GMT - Launch Vehicle: Soyuz. Cosmos 281 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 191 km (118 mi). Apogee: 303 km (188 mi). Inclination: 65.40 deg. Period: 89.40 min. Area survey photo reconnaissance satellite.

1969 July 22 - 12:30 GMT - Launch Vehicle: Soyuz. Cosmos 290 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 195 km (121 mi). Apogee: 332 km (206 mi). Inclination: 65.40 deg. Period: 89.70 min. Area survey photo reconnaissance satellite.

1969 September 24 - 12:15 GMT - Launch Vehicle: Soyuz. Cosmos 301 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 203 km (126 mi). Apogee: 271 km (168 mi). Inclination: 65.40 deg. Period: 89.30 min. Area survey photo reconnaissance satellite.

1969 November 12 - 11:30 GMT - Launch Vehicle: Soyuz. Cosmos 309 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 185 km (114 mi). Apogee: 364 km (226 mi). Inclination: 64.50 deg. Period: 90.00 min. Area survey photo reconnaissance satellite. First flight with Nauka external experiment container.

1970 May 12 - 10:10 GMT - Launch Vehicle: Soyuz. Cosmos 344 Mass: 4,720 kg (10,400 lb). Spacecraft: Zenit-2. Agency: MOM. Perigee: 204 km (126 mi). Apogee: 326 km (202 mi). Inclination: 72.90 deg. Period: 89.80 min. Area survey photo reconnaissance satellite. Partially successful. Failure of SA-10B camera on 42nd orbit.

1972 September 19 - 19:19 GMT - Launch Vehicle: Soyuz. Cosmos 520 Mass: 1,250 kg (2,750 lb). Spacecraft: Oko. Agency: MOM. Perigee: 6,841 km (4,250 mi). Apogee: 33,393 km (20,749 mi). Inclination: 69.90 deg. Period: 715.30 min. Covered Oko constellation plane 3 - 355 degree longitude of ascending node.

1973 November 2 - 13:01 GMT - Launch Vehicle: Soyuz. Cosmos 606 Mass: 1,250 kg (2,750 lb). Spacecraft: Oko. Agency: MOM. Perigee: 4,964 km (3,084 mi). Apogee: 35,385 km (21,987 mi). Inclination: 69.50 deg. Period: 717.70 min. Replaced Cosmos 520. Covered Oko constellation plane 3 - 359 degree longitude of ascending node.

1974 June 29 - 15:59 GMT - Launch Vehicle: Soyuz. Cosmos 665 Mass: 1,250 kg (2,750 lb). Spacecraft: Oko. Agency: MOM. Perigee: 298 km (185 mi). Apogee: 39,653 km (24,639 mi). Inclination: 61.80 deg. Period: 709.60 min. Covered Oko constellation plane 2 - 315 degree longitude of ascending node.

1974 August 30 - Launch Vehicle: Soyuz. FAILURE: Failure. Zenit-2M Spacecraft: Zenit-2M. Agency: RVSN. Area survey photo reconnaissance satellite.

1974 November 21 - 10:33 GMT - Launch Vehicle: Soyuz. Molniya 3-01 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 250 km (150 mi). Apogee: 40,095 km (24,913 mi). Inclination: 64.10 deg. Period: 717.60 min. Operation of the long-range telephone and telegraph radiocommunications system in the USSR; transmission of television programmes to stations in the Orbita network.

1975 January 30 - 15:02 GMT - Launch Vehicle: Soyuz. Cosmos 706 Mass: 1,250 kg (2,750 lb). Spacecraft: Oko. Agency: MOM. Perigee: 4,977 km (3,092 mi). Apogee: 35,365 km (21,974 mi). Inclination: 67.80 deg. Period: 717.60 min. Covered Oko constellation planes 7/8 - 182 degree longitude of ascending node.

1975 April 14 - 17:53 GMT - Launch Vehicle: Soyuz. Molniya 3-02 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 174 km (108 mi). Apogee: 39,323 km (24,434 mi). Inclination: 61.90 deg. Period: 700.50 min. Operation of the long-range telephone and telegraph radiocommunications system in the USSR; transmission of television programmes to stations in the Orbita network.

1976 May 12 - 17:57 GMT - Launch Vehicle: Soyuz. Molniya 3-05 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 93 km (57 mi). Apogee: 37,589 km (23,356 mi). Inclination: 62.10 deg. Period: 664.30 min. Continued operation of the long-range telephone and telegraph radio-communication system within the Soviet Union and transmission of USSR central television programmes to stations in the Orbita and participating international networks (international cooperation scheme).

1979 February 16 - Launch Vehicle: Soyuz. FAILURE: Failure. Zenit-2M Spacecraft: Zenit-2M. Agency: RVSN. Area survey photo reconnaissance satellite.

1979 May 25 - 07:00 GMT - Launch Vehicle: Soyuz. Cosmos 1102 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-2M. Agency: MOM. Perigee: 212 km (131 mi). Apogee: 260 km (160 mi). Inclination: 81.30 deg. Period: 89.20 min. Zenit-2M area survey photo reconnaissance satellite used for earth resources studies as part of 'Gektor-Priroda' project. Nauka subsatellite 32KS jettisoned into independent orbit in the course of the mission. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1979 June 8 - 07:10 GMT - Launch Vehicle: Soyuz. Cosmos 1105 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4MKT. Agency: MOM. Perigee: 212 km (131 mi). Apogee: 254 km (157 mi). Inclination: 81.40 deg. Period: 89.20 min. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1979 June 27 - 18:11 GMT - Launch Vehicle: Soyuz. Cosmos 1109 Mass: 2,030 kg (4,470 lb). Spacecraft: Oko. Agency: MOM. Perigee: 3,228 km (2,005 mi). Apogee: 36,998 km (22,989 mi). Inclination: 68.20 deg. Period: 715.20 min. Covered Oko constellation plane 9 - 237 degree longitude of ascending node.

1979 August 21 - 11:10 GMT - Launch Vehicle: Soyuz. Cosmos 1123 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4MKT. Agency: MOM. Perigee: 211 km (131 mi). Apogee: 236 km (146 mi). Inclination: 81.30 deg. Period: 88.90 min. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1979 September 5 - 10:20 GMT - Launch Vehicle: Soyuz. Cosmos 1127 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 210 km (130 mi). Apogee: 268 km (166 mi). Inclination: 81.30 deg. Period: 89.30 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resources tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1979 September 25 - 15:30 GMT - Launch Vehicle: Soyuz. Cosmos 1129 Mass: 6,000 kg (13,200 lb). Spacecraft: Bion. Agency: MOM. Perigee: 213 km (132 mi). Apogee: 376 km (233 mi). Inclination: 62.80 deg. Period: 90.40 min. Biological experiments; embryo development, radiation medicine. Biosatellite for the continued investigation of the effects of space flight on living organisms. Capsule recovered 52 deg 17 min N, 65 deg 30 min E. Cosmos 1129 satellite carried biological and radiation physics experiment packages from Czechoslovakia, France, Hungary, Poland, Romania, the German Democratic Republic, the U.S. and the U.S.S.R. Additional Details: Cosmos 1129(2452).

1980 April 12 - 20:18 GMT - Launch Vehicle: Soyuz. Cosmos 1172 Mass: 1,800 kg (3,900 lb). Spacecraft: Oko. Agency: MOM. Perigee: 1,476 km (917 mi). Apogee: 38,809 km (24,114 mi). Inclination: 64.70 deg. Period: 716.40 min. Replaced Cosmos 1109. Covered Oko constellation plane 9 - 240 degree longitude of ascending node.

1980 April 18 - 17:31 GMT - Launch Vehicle: Soyuz. FAILURE: Fourth stage failure. Cosmos 1175 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 251 km (155 mi). Apogee: 458 km (284 mi). Inclination: 62.80 deg. Period: 91.60 min. Probable failed early warning. Investigation of the upper atmosphere and outer space.

1980 June 6 - 07:00 GMT - Launch Vehicle: Soyuz. Cosmos 1185 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 208 km (129 mi). Apogee: 277 km (172 mi). Inclination: 82.30 deg. Period: 89.30 min. High resolution photo surveillance; film capsule; maneuverable (?); also performed earth resource tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1980 July 2 - 00:54 GMT - Launch Vehicle: Soyuz. Cosmos 1191 Mass: 1,800 kg (3,900 lb). Spacecraft: Oko. Agency: MOM. Perigee: 5,403 km (3,357 mi). Apogee: 34,907 km (21,690 mi). Inclination: 67.50 deg. Period: 716.90 min. Replaced Cosmos 1124. Covered Oko constellation plane 4 - 39 degree longitude of ascending node.

1980 August 22 - 10:00 GMT - Launch Vehicle: Soyuz. Cosmos 1207 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4MKT. Agency: MOM. Perigee: 211 km (131 mi). Apogee: 256 km (159 mi). Inclination: 82.30 deg. Period: 89.20 min. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1980 August 26 - 15:30 GMT - Launch Vehicle: Soyuz. Cosmos 1208 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-2K. Agency: MOM. Perigee: 173 km (107 mi). Apogee: 339 km (210 mi). Inclination: 67.10 deg. Period: 89.60 min. Area survey photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

1980 September 3 - 10:20 GMT - Launch Vehicle: Soyuz. Cosmos 1209 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 206 km (128 mi). Apogee: 267 km (165 mi). Inclination: 82.30 deg. Period: 89.20 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resources tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1980 September 26 - 10:10 GMT - Launch Vehicle: Soyuz. Cosmos 1212 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4MKT. Agency: MOM. Perigee: 205 km (127 mi). Apogee: 244 km (151 mi). Inclination: 82.30 deg. Period: 88.90 min. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1980 October 24 - 10:53 GMT - Launch Vehicle: Soyuz. Cosmos 1217 Mass: 1,800 kg (3,900 lb). Spacecraft: Oko. Agency: MOM. Perigee: 2,007 km (1,247 mi). Apogee: 38,306 km (23,802 mi). Inclination: 67.00 deg. Period: 716.90 min. Replaced Cosmos 1188. Covered Oko constellation plane 2 - 316 degree longitude of ascending node.

1980 November 27 - 21:37 GMT - Launch Vehicle: Soyuz. Cosmos 1223 Mass: 1,800 kg (3,900 lb). Spacecraft: Oko. Agency: MOM. Perigee: 5,517 km (3,428 mi). Apogee: 34,854 km (21,657 mi). Inclination: 68.30 deg. Period: 718.10 min. Replaced Cosmos 903. Covered Oko constellation planes 7/8 - 177 degree longitude of ascending node.

1980 December 26 - 16:10 GMT - Launch Vehicle: Soyuz. Cosmos 1236 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-2K. Agency: MOM. Perigee: 168 km (104 mi). Apogee: 362 km (224 mi). Inclination: 67.10 deg. Period: 89.80 min. Area survey photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

1981 January 9 - 14:57 GMT - Launch Vehicle: Soyuz. Molniya 3-14 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 487 km (302 mi). Apogee: 39,863 km (24,769 mi). Inclination: 63.60 deg. Period: 717.70 min. Replaced Molniya 3-10. Continued operation of the long-range telephone and telegraph radio-communication system within the Soviet Union and transmission of USSR central television programmes to stations in the Orbita and participating international networks (international cooperation scheme).

1981 March 5 - 15:00 GMT - Launch Vehicle: Soyuz. Cosmos 1248 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-2K. Agency: MOM. Perigee: 112 km (69 mi). Apogee: 531 km (329 mi). Inclination: 68.10 deg. Period: 91.00 min. Area survey photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

1981 March 24 - 03:31 GMT - Launch Vehicle: Soyuz. Molniya 3-15 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 201 km (124 mi). Apogee: 40,052 km (24,887 mi). Inclination: 63.90 deg. Period: 715.70 min. Replace Molniya 3-11. Continued operation of the long-range telephone and telegraph radio-communication system within the Soviet Union and transmission of USSR central television programmes to stations in the Orbita and participating international networks (international cooperation scheme).

1981 March 31 - 09:40 GMT - Launch Vehicle: Soyuz. Cosmos 1261 Mass: 1,250 kg (2,750 lb). Spacecraft: Oko. Agency: MOM. Perigee: 4,742 km (2,946 mi). Apogee: 35,583 km (22,110 mi). Inclination: 67.20 deg. Period: 717.20 min. Covered Oko constellation plane 6 - 115 degree longitude of ascending node.

1981 May 22 - 07:10 GMT - Launch Vehicle: Soyuz. Cosmos 1273 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4MKT. Agency: MOM. Perigee: 205 km (127 mi). Apogee: 258 km (160 mi). Inclination: 82.30 deg. Period: 89.10 min. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1981 June 3 - 14:00 GMT - Launch Vehicle: Soyuz. Cosmos 1274 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-2K. Agency: MOM. Perigee: 144 km (89 mi). Apogee: 291 km (180 mi). Inclination: 67.20 deg. Period: 88.90 min. Area survey photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

1981 June 9 - 03:33 GMT - Launch Vehicle: Soyuz. Molniya 3-16 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 213 km (132 mi). Apogee: 40,027 km (24,871 mi). Inclination: 63.20 deg. Period: 715.50 min. Replaced Molniya 3-14. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation.

1981 August 13 - 16:20 GMT - Launch Vehicle: Soyuz. Cosmos 1296 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-2K. Agency: MOM. Perigee: 167 km (103 mi). Apogee: 354 km (219 mi). Inclination: 67.10 deg. Period: 89.70 min. Area survey photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

1981 August 27 - 10:30 GMT - Launch Vehicle: Soyuz. Cosmos 1301 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 212 km (131 mi). Apogee: 258 km (160 mi). Inclination: 82.30 deg. Period: 89.20 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resources tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1981 October 9 - 10:40 GMT - Launch Vehicle: Soyuz. Cosmos 1314 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4MKT. Agency: MOM. Perigee: 209 km (129 mi). Apogee: 223 km (138 mi). Inclination: 82.30 deg. Period: 88.90 min. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1981 October 17 - 05:59 GMT - Launch Vehicle: Soyuz. Molniya 3-17 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 971 km (603 mi). Apogee: 39,183 km (24,347 mi). Inclination: 62.70 deg. Period: 713.70 min. Replaced Molniya 3-12. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation.

1981 November 3 - 13:00 GMT - Launch Vehicle: Soyuz. Cosmos 1318 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-2K. Agency: MOM. Perigee: 172 km (106 mi). Apogee: 353 km (219 mi). Inclination: 67.10 deg. Period: 89.80 min. Area survey photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

1982 March 24 - 00:12 GMT - Launch Vehicle: Soyuz. Molniya 3-18 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 121 km (75 mi). Apogee: 38,589 km (23,978 mi). Inclination: 63.90 deg. Period: 684.70 min. Replaced Molniya 3-15. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation.

1982 April 15 - 14:30 GMT - Launch Vehicle: Soyuz. Cosmos 1350 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-2K. Agency: MOM. Perigee: 172 km (106 mi). Apogee: 355 km (220 mi). Inclination: 67.10 deg. Period: 89.80 min. Area survey photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

1982 April 23 - 09:40 GMT - Launch Vehicle: Soyuz. Cosmos 1353 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4MKT. Agency: MOM. Perigee: 207 km (128 mi). Apogee: 238 km (147 mi). Inclination: 82.40 deg. Period: 89.00 min. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1982 May 15 - Launch Vehicle: Soyuz. FAILURE: Failure. Zenit-6 Spacecraft: Zenit-6U. Agency: UNKS. Photo surveillance mission.

1982 May 20 - 13:09 GMT - Launch Vehicle: Soyuz. Cosmos 1367 Mass: 1,250 kg (2,750 lb). Spacecraft: Oko. Agency: MOM. Perigee: 4,640 km (2,880 mi). Apogee: 35,764 km (22,222 mi). Inclination: 67.90 deg. Period: 718.80 min. Covered Oko constellation plane 1 - 276 degree longitude of ascending node.

1982 June 30 - 15:00 GMT - Launch Vehicle: Soyuz. Cosmos 1384 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-2K. Agency: MOM. Perigee: 168 km (104 mi). Apogee: 353 km (219 mi). Inclination: 67.20 deg. Period: 89.70 min. Area survey photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

1982 August 20 - 09:50 GMT - Launch Vehicle: Soyuz. Cosmos 1401 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 210 km (130 mi). Apogee: 260 km (160 mi). Inclination: 82.30 deg. Period: 89.20 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resources tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1982 August 27 - 00:02 GMT - Launch Vehicle: Soyuz. Molniya 3-19 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 1,567 km (973 mi). Apogee: 38,841 km (24,134 mi). Inclination: 63.90 deg. Period: 718.90 min. Replaced Molniya 3-13. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation.

1982 September 15 - 15:30 GMT - Launch Vehicle: Soyuz. Cosmos 1407 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-2K. Agency: MOM. Perigee: 169 km (105 mi). Apogee: 309 km (192 mi). Inclination: 67.20 deg. Period: 89.30 min. Area survey photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

1983 February 10 - 07:15 GMT - Launch Vehicle: Soyuz. Cosmos 1440 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 208 km (129 mi). Apogee: 272 km (169 mi). Inclination: 82.40 deg. Period: 89.30 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resources tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1983 February 16 - 10:03 GMT - Launch Vehicle: Soyuz. Cosmos 1441 Mass: 2,000 kg (4,400 lb). Spacecraft: Tselina-D. Agency: MOM. Perigee: 578 km (359 mi). Apogee: 587 km (364 mi). Inclination: 81.10 deg. Period: 96.30 min.

1983 February 25 - 12:45 GMT - Launch Vehicle: Soyuz. Cosmos 1442 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-4K1. Agency: MOM. Perigee: 169 km (105 mi). Apogee: 339 km (210 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.

1983 March 11 - 15:29 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-ML Molniya 3-20 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 2,069 km (1,285 mi). Apogee: 38,314 km (23,807 mi). Inclination: 63.90 deg. Period: 718.40 min. Replaced Molniya 3-17. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation.

1983 April 22 - 14:30 GMT - Launch Vehicle: Soyuz. Cosmos 1454 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-2K. Agency: MOM. Perigee: 167 km (103 mi). Apogee: 345 km (214 mi). Inclination: 67.10 deg. Period: 89.70 min. Area survey photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

1983 May 17 - 08:00 GMT - Launch Vehicle: Soyuz. Cosmos 1462 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 205 km (127 mi). Apogee: 297 km (184 mi). Inclination: 82.40 deg. Period: 89.50 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resources tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1983 June 7 - 07:50 GMT - Launch Vehicle: Soyuz. Cosmos 1468 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 211 km (131 mi). Apogee: 251 km (155 mi). Inclination: 82.40 deg. Period: 89.10 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resources tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1983 June 28 - 15:00 GMT - Launch Vehicle: Soyuz. Cosmos 1471 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-2K. Agency: MOM. Perigee: 170 km (100 mi). Apogee: 343 km (213 mi). Inclination: 67.10 deg. Period: 89.70 min. Area survey photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission. Final Yantar-2K mission.

1983 August 30 - 22:49 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-ML Molniya 3-21 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 1,864 km (1,158 mi). Apogee: 38,445 km (23,888 mi). Inclination: 64.40 deg. Period: 716.90 min. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation.

1983 September 14 - 10:25 GMT - Launch Vehicle: Soyuz. Cosmos 1498 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 206 km (128 mi). Apogee: 274 km (170 mi). Inclination: 82.30 deg. Period: 89.30 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resource tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1983 November 30 - 13:45 GMT - Launch Vehicle: Soyuz. Cosmos 1511 Mass: 6,600 kg (14,500 lb). Spacecraft: Yantar-4K1. Agency: MOM. Perigee: 182 km (113 mi). Apogee: 332 km (206 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.

1983 December 14 - 07:00 GMT - Launch Vehicle: Soyuz. Cosmos 1514 Mass: 6,000 kg (13,200 lb). Spacecraft: Bion. Agency: MOM. Perigee: 211 km (131 mi). Apogee: 255 km (158 mi). Inclination: 82.30 deg. Period: 89.20 min. Biological experiments. Continued investigation of the influence of space flight factors on living organisms. Carried monkeys Abrek and Bion. Capsule recovered 52 deg 42 min N, 62 deg 48 min E. The first U.S.S.R. orbital flight of a non-human primate was accomplished on the Cosmos 1514 mission. Two monkeys flew on the mission, together with several pregnant rats. More than 60 experiments were performed by investigators from Bulgaria, Hungary, the German Democratic Republic, Poland, Romania, Czechoslovakia, France, the U.S.S.R. and the U.S. U.S. scientists conducted three experiments on the primates and another experiment on the rat subjects. Additional Details: Cosmos 1514(2948).

1983 December 21 - 06:07 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-ML Molniya 3-22 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 176 km (109 mi). Apogee: 39,819 km (24,742 mi). Inclination: 64.30 deg. Period: 710.50 min. Replaced Molniya 3-16. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation.

1984 February 16 - 08:15 GMT - Launch Vehicle: Soyuz. Cosmos 1537 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 204 km (126 mi). Apogee: 285 km (177 mi). Inclination: 82.40 deg. Period: 89.40 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resource tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1984 June 15 - 08:20 GMT - Launch Vehicle: Soyuz. Cosmos 1572 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 211 km (131 mi). Apogee: 265 km (164 mi). Inclination: 82.40 deg. Period: 89.30 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resource tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1984 August 16 - 09:50 GMT - Launch Vehicle: Soyuz. Cosmos 1590 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 207 km (128 mi). Apogee: 262 km (162 mi). Inclination: 82.40 deg. Period: 89.20 min. High resolution photo surveillance; film capsule; maneuverable. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1985 April 16 - 17:15 GMT - Launch Vehicle: Soyuz. Cosmos 1645 / Foton 1 Mass: 6,200 kg (13,600 lb). Spacecraft: Foton. Agency: MOM. Perigee: 214 km (132 mi). Apogee: 388 km (241 mi). Inclination: 62.80 deg. Period: 90.50 min. Materials processing tests.

1985 May 22 - 08:35 GMT - Launch Vehicle: Soyuz. Cosmos 1653 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 206 km (128 mi). Apogee: 290 km (180 mi). Inclination: 82.30 deg. Period: 89.50 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resource tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1985 June 11 - 14:27 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-2BL Cosmos 1658 Mass: 1,250 kg (2,750 lb). Spacecraft: Oko. Agency: MOM. Perigee: 3,366 km (2,091 mi). Apogee: 36,933 km (22,949 mi). Inclination: 65.60 deg. Period: 716.70 min. Replaced Cosmos 1481. Covered Oko constellation plane 6 - 114 degree longitude of ascending node.

1985 June 21 - 07:45 GMT - Launch Vehicle: Soyuz. Cosmos 1663 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 210 km (130 mi). Apogee: 256 km (159 mi). Inclination: 82.30 deg. Period: 89.20 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resource tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1985 July 10 - 03:15 GMT - Launch Vehicle: Soyuz. Cosmos 1667 Mass: 5,700 kg (12,500 lb). Spacecraft: Bion. Agency: MOM. Perigee: 206 km (128 mi). Apogee: 262 km (162 mi). Inclination: 82.40 deg. Period: 89.20 min. Biological research. Carried monkeys Verniy and Gordiy. Continued investigations of the influence of space flight factors on living organisms and radiation physics research. Cosmos 1667 was the second USSR biosatellite mission with a primate payload. Cosmos 1667 also featured a large rodent payload, however the U.S. only conducted a single experiment cardiovascular experiment on one of the two flight monkeys. Mission parameters were very similar to those of Cosmos 1514. Countries participating in the mission included the USSR, U.S., France, Czechoslovakia, the German Democratic Republic, Poland, Romania, Bulgaria and Hungary. Additional Details: Cosmos 1667(3341).

1985 August 29 - 10:15 GMT - Launch Vehicle: Soyuz. Cosmos 1678 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-17F41. Agency: MOM. Perigee: 178 km (110 mi). Apogee: 280 km (170 mi). Inclination: 82.30 deg. Period: 89.10 min. High resolution photo surveillance; film capsule; maneuverable; also performed earth resource tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1985 September 6 - 10:45 GMT - Launch Vehicle: Soyuz. Cosmos 1681 Mass: 6,300 kg (13,800 lb). Spacecraft: Zenit-4MKT. Agency: MOM. Perigee: 206 km (128 mi). Apogee: 225 km (139 mi). Inclination: 82.30 deg. Period: 88.80 min. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1985 November 9 - 08:25 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-2BL Cosmos 1701 Mass: 1,250 kg (2,750 lb). Spacecraft: Oko. Agency: MOM. Perigee: 3,375 km (2,097 mi). Apogee: 36,974 km (22,974 mi). Inclination: 67.20 deg. Period: 717.70 min. Replaced Cosmos 1675. Covered Oko constellation plane 8 - 192 degree longitude of ascending node.

1986 April 18 - 19:50 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-ML Molniya 3-28 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 1,255 km (779 mi). Apogee: 39,095 km (24,292 mi). Inclination: 64.70 deg. Period: 717.70 min. Replaced Molniya 3-23. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation.

1986 May 21 - 16:30 GMT - Launch Vehicle: Soyuz. Cosmos 1744 / Foton 2 Mass: 6,200 kg (13,600 lb). Spacecraft: Foton. Agency: MOM. Perigee: 217 km (134 mi). Apogee: 371 km (230 mi). Inclination: 62.80 deg. Period: 90.40 min. 216 orbits. Materials processing experiments. Continuation of research on materials science in space.

1986 June 19 - 21:09 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-ML Molniya 3-29 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 1,581 km (982 mi). Apogee: 38,815 km (24,118 mi). Inclination: 64.70 deg. Period: 718.60 min. Replaced Molniya 3-20. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation.

1986 October 3 - 13:05 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-2BL FAILURE: Fourth stage failure. Cosmos 1783 Mass: 1,800 kg (3,900 lb). Spacecraft: Oko. Agency: MOM. Perigee: 1,970 km (1,220 mi). Apogee: 18,679 km (11,606 mi). Inclination: 64.60 deg. Period: 358.00 min. Unusable orbit. Was intended to cover Oko constellation plane 1 - 272 degree longitude of ascending node.

1986 October 15 - 09:29 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-2BL Cosmos 1785 Mass: 1,800 kg (3,900 lb). Spacecraft: Oko. Agency: MOM. Perigee: 3,408 km (2,117 mi). Apogee: 37,013 km (22,998 mi). Inclination: 67.00 deg. Period: 719.10 min. Replaced Cosmos 1596. Covered Oko constellation plane 9 - 233 degree longitude of ascending node.

1987 January 22 - 16:06 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-ML Molniya 3-31 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 1,285 km (798 mi). Apogee: 39,069 km (24,276 mi). Inclination: 64.10 deg. Period: 717.80 min. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation.

1987 April 24 - 16:59 GMT - Launch Vehicle: Soyuz. Cosmos 1841 / Foton 3 Mass: 6,300 kg (13,800 lb). Spacecraft: Foton. Agency: MOM. Perigee: 217 km (134 mi). Apogee: 380 km (230 mi). Inclination: 62.90 deg. Period: 90.50 min. Materials processing tests. Conduct of experiments on the production of semi-conducting materials and super-pure biological preparations in micro-gravity.

1987 September 29 - 12:50 GMT - Launch Vehicle: Soyuz. Cosmos 1887 Mass: 6,000 kg (13,200 lb). Spacecraft: Bion. Agency: MOM. Perigee: 214 km (132 mi). Apogee: 382 km (237 mi). Inclination: 62.80 deg. Period: 90.50 min. Biological research. Carried monkeys Drema and Erosha. Continued investigations of the influence of space flight factors on living organisms and radiation physics research. Capsule recovered 62 deg 47 min N, 112 deg 26 min E (?). Additional Details: Cosmos 1887(3649).

1987 December 21 - 22:35 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-2BL Cosmos 1903 Mass: 1,250 kg (2,750 lb). Spacecraft: Oko. Agency: MOM. Perigee: 6,634 km (4,122 mi). Apogee: 33,733 km (20,960 mi). Inclination: 67.70 deg. Period: 718.00 min. Covered Oko constellation plane 8 - 196 degree longitude of ascending node. It was reported that prior to this, on 8 November 1987 a Molniya booster was prepared for launch in a record four days at Plesetsk.

1988 February 26 - 09:31 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-2BL Cosmos 1922 Mass: 1,800 kg (3,900 lb). Spacecraft: Oko. Agency: MOM. Perigee: 6,225 km (3,868 mi). Apogee: 34,181 km (21,239 mi). Inclination: 67.60 deg. Period: 718.80 min. Covered Oko constellation plane 5 - 75 degree longitude of ascending node.

1988 April 14 - 17:00 GMT - Launch Vehicle: Soyuz. Foton 4 Mass: 6,200 kg (13,600 lb). Spacecraft: Foton. Agency: MOM. Perigee: 215 km (133 mi). Apogee: 372 km (231 mi). Inclination: 62.80 deg. Period: 90.40 min. 218 orbits. Materials processing experiments; extremely pure and semiconductor materials. Research in material science in space (production of semiconductor materials with improved properties and very pure biologically active substances)

1988 May 31 - 07:45 GMT - Launch Vehicle: Soyuz. Cosmos 1951 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-14F43. Agency: MOM. Perigee: 173 km (107 mi). Apogee: 241 km (149 mi). Inclination: 82.30 deg. Period: 88.60 min. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1988 August 23 - 11:15 GMT - Launch Vehicle: Soyuz. Cosmos 1965 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F2. Agency: MOM. Perigee: 179 km (111 mi). Apogee: 228 km (141 mi). Inclination: 82.30 deg. Period: 88.60 min. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1988 September 9 - 10:40 GMT - Launch Vehicle: Soyuz. Cosmos 1968 Mass: 6,300 kg (13,800 lb). Spacecraft: Resurs F1-14F43. Agency: MOM. Perigee: 177 km (109 mi). Apogee: 230 km (140 mi). Inclination: 82.30 deg. Period: 88.60 min. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.

1988 September 29 - 09:07 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-ML Molniya 3-33 Mass: 1,600 kg (3,500 lb). Spacecraft: Molniya-3. Agency: MOM. Perigee: 1,867 km (1,160 mi). Apogee: 38,414 km (23,869 mi). Inclination: 65.00 deg. Period: 716.30 min. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation.

1988 October 3 - 22:23 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-2BL Cosmos 1974 Mass: 1,250 kg (2,750 lb). Spacecraft: Oko. Agency: MOM. Perigee: 6,942 km (4,313 mi). Apogee: 33,413 km (20,761 mi). Inclination: 68.00 deg. Period: 717.80 min. Covered Oko constellation plane 7 - 157 degree longitude of ascending node.

1988 October 25 - 18:02 GMT - Launch Vehicle: Soyuz. Molniya 8K78M-2BL Cosmos 1977 Mass: 1,250 kg (2,750 lb). Spacecraft: Oko. Agency: MOM. Perigee: 6,559 km (4,075 mi). Apogee: 33,805 km (21,005 mi). Inclination: 67.70 deg. Period: 718.00 min. Covered Oko constellation plane 6 - 116 degree longitude of ascending node.

1989 April 26 - 17:00 GMT - Launch Vehicle: Soyuz. Foton 5 Mass: 6,200 kg (13,600 lb). Spacecraft: Foton. Agency: MOM. Perigee: 220 km (130 mi). Apogee: 377 km (234 mi). Inclination: 62.80 deg. Period: 90.50 min. 234 orbits. Materials processing. Space materials research (production of enhanced performance semiconductors and especially pure biologically active substances in microgravity conditions). Jointly with France.