1967 December 26 - 09:01 GMT - Launch Vehicle: Kosmos 2. Cosmos 197 Mass: 325 kg (716 lb). Spacecraft: DS-U2-V. Agency: MO SSSR. Perigee: 217 km (134 mi). Apogee: 486 km (301 mi). Inclination: 48.40 deg. Period: 91.50 min. Military technology development satellite - mission still classified.

1968 February 20 - 10:03 GMT - Launch Vehicle: Kosmos 2. Cosmos 202 Mass: 325 kg (716 lb). Spacecraft: DS-U2-V. Agency: MO SSSR. Perigee: 210 km (130 mi). Apogee: 488 km (303 mi). Inclination: 48.40 deg. Period: 91.50 min. Military technology development satellite - mission still classified.

1968 March 6 - 11:02 GMT - Launch Vehicle: Kosmos 2. FAILURE: Second stage failed 216 seconds after launch. DS-U1-Ya s/n 1 Spacecraft: DS-U1-Ya. Agency: RVSN. Studied charged particle flows and cosmic rays.

1968 April 18 - 22:29 GMT - Launch Vehicle: Kosmos 2. Cosmos 215 Mass: 385 kg (848 lb). Spacecraft: DS-U1-A. Agency: MO SSSR. Perigee: 255 km (158 mi). Apogee: 403 km (250 mi). Inclination: 48.40 deg. Period: 91.00 min. Studied the optical characteristics of the atmosphere. Radiation observatory; eight telescopes.

1968 April 26 - 04:42 GMT - Launch Vehicle: Kosmos 2. Cosmos 219 Mass: 300 kg (660 lb). Spacecraft: DS-U2-D. Agency: MO SSSR. Perigee: 215 km (133 mi). Apogee: 1,745 km (1,084 mi). Inclination: 48.40 deg. Period: 104.60 min. Studied charged particle flows.

1968 May 24 - 07:04 GMT - Launch Vehicle: Kosmos 2. Cosmos 221 Mass: 250 kg (550 lb). Spacecraft: DS-P1-Yu. Agency: MO SSSR. Perigee: 215 km (133 mi). Apogee: 2,140 km (1,320 mi). Inclination: 48.40 deg. Period: 108.90 min. Development of systems for air defence and the control of outer space.

1968 June 11 - 21:29 GMT - Launch Vehicle: Kosmos 2. Cosmos 225 Mass: 375 kg (826 lb). Spacecraft: DS-U1-Ya. Agency: MO SSSR. Perigee: 255 km (158 mi). Apogee: 519 km (322 mi). Inclination: 48.40 deg. Period: 92.20 min. Studied charged particle flows and cosmic rays.

1968 July 5 - 06:59 GMT - Launch Vehicle: Kosmos 2. Cosmos 230 Mass: 367 kg (809 lb). Spacecraft: DS-U3-S. Agency: MO SSSR. Perigee: 287 km (178 mi). Apogee: 546 km (339 mi). Inclination: 48.40 deg. Period: 92.90 min. Specialized orbital solar observatory for measuring solar rays in mulitple spectral zones.

1968 December 14 - 05:09 GMT - Launch Vehicle: Kosmos 2. Cosmos 259 Mass: 325 kg (716 lb). Spacecraft: DS-U2-I. Agency: MO SSSR. Perigee: 215 km (133 mi). Apogee: 1,331 km (827 mi). Inclination: 48.40 deg. Period: 100.20 min. Studied the influence of the ionosphere on passing VLF radio waves.

1968 December 26 - 09:45 GMT - Launch Vehicle: Kosmos 2. Cosmos 262 Mass: 352 kg (776 lb). Spacecraft: DS-U2-GF. Agency: MO SSSR. Perigee: 264 km (164 mi). Apogee: 791 km (491 mi). Inclination: 48.40 deg. Period: 95.20 min. Conducted heliophysical studies.

1969 March 5 - 13:04 GMT - Launch Vehicle: Kosmos 2. Cosmos 268 Mass: 250 kg (550 lb). Spacecraft: DS-P1-Yu. Agency: MO SSSR. Perigee: 209 km (129 mi). Apogee: 2,173 km (1,350 mi). Inclination: 48.40 deg. Period: 109.10 min. Development of systems for air defence and the control of outer space.

1969 October 14 - 13:19 GMT - Launch Vehicle: Kosmos 2. Kosmos 11K63 2I Intercosmos 1 Mass: 320 kg (700 lb). Spacecraft: DS-U3-IK. Agency: IK. Perigee: 264 km (164 mi). Apogee: 617 km (383 mi). Inclination: 48.30 deg. Period: 93.40 min. Measurements of the solar radiation and its effect on the atmosphere of the earth. Payload included East European experiments to study solar ultraviolet and X-ray effects on the upper atmosphere. Investigation of

1969 October 24 - 13:01 GMT - Launch Vehicle: Kosmos 2. Cosmos 307 Mass: 250 kg (550 lb). Spacecraft: DS-P1-Yu. Agency: MO SSSR. Perigee: 229 km (142 mi). Apogee: 2,150 km (1,330 mi). Inclination: 48.30 deg. Period: 109.20 min. Development of systems for air defence and the control of outer space.

1969 December 25 - 09:59 GMT - Launch Vehicle: Kosmos 2. Intercosmos 2 Mass: 320 kg (700 lb). Spacecraft: DS-U1-IK. Agency: IK. Perigee: 200 km (120 mi). Apogee: 1,178 km (731 mi). Inclination: 48.40 deg. Period: 98.50 min. East European instruments carried to determine the characteristics of the earth's ionosphere and the concentrations of electrons and positive ions.

1970 January 16 - 10:59 GMT - Launch Vehicle: Kosmos 2. Cosmos 320 Mass: 375 kg (826 lb). Spacecraft: DS-MO. Agency: MO SSSR. Perigee: 247 km (153 mi). Apogee: 326 km (202 mi). Inclination: 48.40 deg. Period: 90.20 min. Used in development of aerodynamic systems for stabilisation and orientation of spacecraft. Also carried military optical equipment experiments.

1970 April 24 - 22:24 GMT - Launch Vehicle: Kosmos 2. Cosmos 335 Mass: 295 kg (650 lb). Spacecraft: DS-U1-R. Agency: MO SSSR. Perigee: 250 km (150 mi). Apogee: 401 km (249 mi). Inclination: 48.40 deg. Period: 91.00 min. Studied spectral range of the UF.

1970 June 12 - 09:30 GMT - Launch Vehicle: Kosmos 2. Cosmos 347 Mass: 250 kg (550 lb). Spacecraft: DS-P1-Yu. Agency: MO SSSR. Perigee: 173 km (107 mi). Apogee: 373 km (231 mi). Inclination: 48.30 deg. Period: 89.90 min. Development of systems for air defence and the control of outer space.

1970 August 7 - 02:59 GMT - Launch Vehicle: Kosmos 2. Intercosmos 3 Mass: 340 kg (740 lb). Spacecraft: DS-U2-IK. Agency: MO SSSR. Perigee: 201 km (124 mi). Apogee: 1,294 km (804 mi). Inclination: 48.40 deg. Period: 99.80 min. Studied charged particle flows and the ionosphere. Carried East European experiments that studied protons, electrons, alpha particles.

1970 October 14 - 11:29 GMT - Launch Vehicle: Kosmos 2. Intercosmos 4 Mass: 320 kg (700 lb). Spacecraft: DS-U3-IK. Agency: MO SSSR. Perigee: 255 km (158 mi). Apogee: 656 km (407 mi). Inclination: 48.40 deg. Period: 93.70 min. Investigation of the ultra-violet and x-radiation of the sun and its effect on the structure of the Earth's upper atmosphere. Payload included East European experiments to study solar ultraviolet and X-ray effects on upper atmosphere.

1971 March 5 - 08:15 GMT - Launch Vehicle: Kosmos 2. FAILURE: Second stage failed 133 seconds after launch. DS-P1-Yu s/n 39 Spacecraft: DS-P1-Yu. Agency: RVSN. Development of systems for air defence and the control of outer space.

1971 November 24 - Launch Vehicle: Kosmos 2. DS-P1-I Spacecraft: DS-P1-I. Operational radar target for the ABM forces. Launch vehicle launch scrubbed - unknown cause.

1971 December 2 - 08:25 GMT - Launch Vehicle: Kosmos 2. Intercosmos 5 Mass: 340 kg (740 lb). Spacecraft: DS-U2-IK. Agency: IK. Perigee: 198 km (123 mi). Apogee: 1,181 km (733 mi). Inclination: 48.40 deg. Period: 98.50 min. Carried Czech and Soviet instruments that investigated the effects of solar activity on near-Earth radiation. Studied the radiation levels in near-Earth space, investigated dipole corpuscular streams in near space in connexion with solar activity and investigation of the nature and spectrum of low-frequency electromagnetic oscillations in natural plasma.

1972 June 30 - 05:58 GMT - Launch Vehicle: Kosmos 2. Intercosmos 7 Mass: 375 kg (826 lb). Spacecraft: DS-U3-IK. Agency: IK. Perigee: 260 km (160 mi). Apogee: 550 km (340 mi). Inclination: 48.40 deg. Period: 92.60 min. Continuation of joint studies of the sun's ultra-violet and x-radiation and its effects on the structure of the earth's upper atmosphere.

1972 July 12 - 05:59 GMT - Launch Vehicle: Kosmos 2. Cosmos 501 Mass: 250 kg (550 lb). Spacecraft: DS-P1-Yu. Agency: MO SSSR. Perigee: 221 km (137 mi). Apogee: 2,167 km (1,346 mi). Inclination: 48.00 deg. Period: 109.30 min. Development of systems for air defence and the control of outer space.