Encyclopedia Astronautica
August 20


August 20 Chronology


1895 August 20 - .
  • Birth of Henry J E Reid - . Nation: USA. Summary: American engineer, at NASA 1921-1961, designed basic instruments for flight research..

1938 August 20 - .
  • Birth of Jean-Loup Jacques Marie Chretien - . Nation: France. Summary: French test pilot mission specialist astronaut. Flew on Salyut 7 EP-1, Mir Aragatz, STS-86. First French astronaut. Trained for missions under both US and Russian programs..

1944 August 20 - . Launch Site: Peenemuende. Launch Complex: Peenemuende P10. LV Family: V-2. Launch Vehicle: V-2. LV Configuration: V-2 18238.
  • - . Nation: Germany. Summary: Burnout at T+66seconds. Flight duration 290 seconds. Range 239 km.

1945 August 20 - .
  • Soviet Union begins development of the atomic bomb. - . Nation: USSR. Summary: State Committee for Defence (GKO) Decree 9887/ss/op 'On a Special Committee Under the GKO's Jurisdiction--creation of Special Committee and its subordinate First Chief Directorate of GKO (later of Council of Ministers) for the development of atomic bomb'.

1948 August 20 - .
1948 August 20 - . Launch Site: White Sands. Launch Complex: White Sands LC33. LV Family: Nike. Launch Vehicle: Nike. LV Configuration: Nike O.
  • Test mission - . Nation: USA. Agency: USA. Apogee: 10 km (6 mi).

1951 August 20 - .
1952 August 20 - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. LV Family: R-1. Launch Vehicle: R-1 8A11. LV Configuration: R-1 8A11 No 220.
  • Operational test - . Nation: USSR. Agency: Korolev. Apogee: 100 km (60 mi).

1953 August 20 - .
  • Moscow announces explosion of hydrogen bomb - . Nation: USSR.

1953 August 20 - . Launch Site: Wallops Island. LV Family: Deacon. Launch Vehicle: Triple Deacon HPAG.
  • E10 Hypersonic test - . Nation: USA. Agency: NASA. Apogee: 20 km (12 mi).

1953 August 20 - . 14:37 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC4. LV Family: Redstone. Launch Vehicle: Redstone. LV Configuration: Redstone RS-1. FAILURE: Control System malfunction followed by Power Plant malfunction at approximately 80 sec. Ground cut-off command given... Failed Stage: G.
  • - . Nation: USA. Agency: USA. Apogee: 6.00 km (3.70 mi). Summary: Redstone missile No. 1 was fired by Army Redstone Arsenal personnel at AFMTC, Cape Canaveral. Missile test failure. Missed aimpoint by 240,000 m..

1957 August 20 - . LV Family: Kosmos 2. Launch Vehicle: R-12.
  • USSR sells R-12 missiles to China. - . Nation: USSR. Summary: Ministry of Armaments Decree 'On transfer of two R-12 missiles to China (on August 6)' was issued..

1958 August 20 - . 11:27 GMT - . Launch Site: Ramey. Launch Vehicle: Jason. LV Configuration: Jason Jason 1841.
  • Nuclear test observation mission - . Nation: USA. Agency: USAF. Apogee: 800 km (490 mi).

1960 August 20 - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. LV Family: Kosmos 2. Launch Vehicle: R-12.
  • - . Nation: Ukraine. Agency: MVS. Apogee: 402 km (249 mi).

1962 August 20 - . LV Family: Titan. Launch Vehicle: Titan 3C.
  • US Department of Defense announced Titan III launch vehicle. - . Nation: USA. Related Persons: McNamara. The Department of Defense announced plans to develop a Titan III launch vehicle powered by both solid and liquid fuel rocket motors with a total thrust of over 11 million newtons (2.5 million Ibs). .Scheduled to become operational in 1965, the Titan III would be used to launch the Air Force's X-20 (Dyna Soar) manned spacecraft, as well as heavy unmanned military satellites. Martin Marietta Corporation had been selected as prime contractor for the project, at an estimated cost of between $500 million and $1 billion. At a news conference the following day, Defense Secretary Robert S. McNamara cited the Titan III as a major step toward overtaking the Soviet Union in various phases of military space development.

1962 August 20 - . 18:08 GMT - . Launch Site: Hidden Hills DZ. Launch Pad: 36.1 N x 116.0 W. Launch Platform: NB-52 008. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 2-27-47.
  • X-15A Heating, drag, ASAS test - . Nation: USA. Agency: NASA; USAF. Apogee: 27 km (16 mi). Summary: Maximum Speed - 5686 kph. Maximum Altitude - 27000 m..

1963 August 20 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC29A. LV Family: Polaris. Launch Vehicle: Polaris A3. LV Configuration: Polaris A3X-37.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1963 August 20 - . Launch Site: Baikonur. Launch Complex: Baikonur LC60/8. LV Family: R-16. Launch Vehicle: R-16U.
  • Military training launch - . Nation: USSR. Agency: RVSN. Apogee: 1,210 km (750 mi).

1964 August 20 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. LV Family: Polaris. Launch Vehicle: Polaris A3. LV Configuration: Polaris A3P-33.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1964 August 20 - . 05:36 GMT - . Launch Site: Woomera. Launch Complex: Woomera LA2. Launch Pad: LA2 SL. LV Family: Skylark. Launch Vehicle: Skylark 7C. LV Configuration: Skylark-7C SL121.
  • X-ray pinhole / ne Ionosphere / solar x-rays mission - . Nation: Australia. Agency: WRE; RAE. Apogee: 192 km (119 mi).

1964 August 20 - . 09:02 GMT - . Launch Site: Woomera. Launch Complex: Woomera LA2. Launch Vehicle: HAD. LV Configuration: HAD 135.
  • Aeronomy mission - . Nation: Australia. Agency: WRE. Apogee: 119 km (73 mi).

1965 August 20 - . LV Family: Saturn V. Launch Vehicle: Saturn V.
  • Apollo S-IVB static-fired simulating a lunar mission - . Nation: USA. Program: Apollo. Summary: Douglas Aircraft Company static-fired the S-IVB in a test at Sacramento, Calif., simulating the workload of a lunar mission. The stage was run for three minutes, shut down for half an hour, then reignited for almost six minutes..

1965 August 20 - .
  • NASA MSFC began serious investigation of the concept of an S-IVB Orbital Workshop (OWS). - . Nation: USA. Spacecraft: Orbital Workshop. As part of MSFC's activities related to the AES program, designers at the Center began serious investigation of the concept of an S-IVB Orbital Workshop (OWS). This concept, which involved 'in- orbit' conversion of a spent S-IVB stage to a shelter suitable for extended stay and utilization by man, showed great potential for experiment work during the Earth-orbital phase of the AES program. Accordingly, MSFC officials planned a four-month conceptual design effort, to begin immediately, with help and participation from both MSC and the S-IVB stage builder, Douglas Aircraft Company. Additional Details: NASA MSFC began serious investigation of the concept of an S-IVB Orbital Workshop (OWS)..

1965 August 20 - . Launch Site: Green River. Launch Complex: Green River Pad 1. LV Family: Athena RTV. Launch Vehicle: Athena RTV. LV Configuration: Athena D009. FAILURE: Failure.
  • USAF D009 re-entry vehicle test flight - . Nation: USA. Agency: USAF. Apogee: 0 km ( mi).

1965 August 20 - . Launch Site: Green River. Launch Complex: Green River Pad 3. LV Family: Athena RTV. Launch Vehicle: Athena RTV. LV Configuration: Athena C008.
  • USAF C008 re-entry vehicle test flight - . Nation: USA. Agency: USAF. Apogee: 200 km (120 mi).

1966 August 20 - . 12:00 GMT - . Launch Site: Kheysa. LV Family: M-100. Launch Vehicle: M-100.
  • - . Nation: USSR. Agency: GMS. Apogee: 80 km (49 mi).

1967 August 20 - . 00:40 GMT - . Launch Site: Andoya. LV Family: Arcas. Launch Vehicle: Sidewinder-Arcas. FAILURE: Failure.
  • Arcas V Ionosphere/Plasma mission - . Nation: Norway. Agency: NASA; NTNF. Apogee: 1.00 km (0.60 mi).

1968 August 20 - . Launch Site: Jiuquan. LV Family: T-7. Launch Vehicle: T-7/GF-01A.
  • GF-01A satellite test - . Nation: China. Agency: CAST. Apogee: 311 km (193 mi).

1968 August 20 - . 09:00 GMT - . Launch Site: Fort Churchill. LV Family: Tomahawk Sandia. Launch Vehicle: Nike Tomahawk. LV Configuration: Nike Tomahawk CRL AH08.649.
  • Release Aeronomy mission - . Nation: USA. Agency: USAF. Apogee: 194 km (120 mi).

1968 August 20 - . 10:10 GMT - . Launch Site: Fort Churchill. LV Family: Nike. Launch Vehicle: Nike Iroquois. LV Configuration: Nike Iroquois CRL AG07.685.
  • NO / TMA Aeronomy mission - . Nation: USA. Agency: USAF. Apogee: 175 km (108 mi).

1968 August 20 - . 19:32 GMT - . Launch Site: White Sands. LV Family: Apache. Launch Vehicle: Nike Apache. LV Configuration: Nike Apache NASA 14.301UA.
  • Pandora E Meteorites mission - . Nation: USA. Agency: NASA. Apogee: 154 km (95 mi).

1969 August 20 - .
  • MSC rejected a Grumman proposal to use the Apollo LM as a lunar reconnaissance module - . Nation: USA. Program: Apollo. Spacecraft: Apollo LRM. MSC rejected a Grumman proposal to use the LM as a lunar reconnaissance module. MSC pointed out that an MSC special task team had recently studied a number of proposals for lunar reconnaissance. These included use of a command module test vehicle, the AAP multiple docking adapter, the subsystem test bed, the ascent stage of the LM, and the entire LM vehicle.

1969 August 20 - .
  • Kamanin returns to work 'after a forty-day vacation'. - . Nation: USSR. Flight: Apollo 11. Summary: There are no published diary entries for the key period of the Apollo 11 landing on the moon or the Luna 15 attempted landing on the moon..

1969 August 20 - . Launch Site: Vandenberg. Launch Complex: Vandenberg 576A1. LV Family: Atlas. Launch Vehicle: Atlas F. LV Configuration: Atlas F 112F.
  • ABRES RVTO-1A-5 re-entry vehicle test flight - . Nation: USA. Agency: USAF AFSC. Apogee: 1,400 km (800 mi).

1970 August 20 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF09. Launch Pad: LF09?. LV Family: Minuteman. Launch Vehicle: Minuteman 1B.
  • FOT GT74B Follow-on Test launch - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1970 August 20 - . 14:30 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. Launch Pad: LC132/pad?. LV Family: Kosmos 3. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 358 - . Mass: 875 kg (1,929 lb). Nation: USSR. Agency: MO. Class: Navigation. Type: Navigation satellite. Spacecraft: Tsiklon. Decay Date: 1990-06-26 . USAF Sat Cat: 4497 . COSPAR: 1970-064A. Apogee: 342 km (212 mi). Perigee: 334 km (207 mi). Inclination: 74.0000 deg. Period: 91.30 min. Summary: Identification uncertain. Possibly a Tsiklon military navigation satellite placed in incorrect orbit..

1971 August 20 - . Launch Site: Green River. Launch Complex: Green River Pad 1. LV Family: Athena RTV. Launch Vehicle: Athena RTV. LV Configuration: Athena V131D.
  • Re-entry Vehicle test - . Nation: USA. Agency: USAF. Apogee: 200 km (120 mi).

1971 August 20 - . Launch Site: Kagoshima. Launch Complex: Kagoshima L. LV Family: Lambda. Launch Vehicle: Lambda 4SC. LV Configuration: Lambda 4SC L-4SC-1. FAILURE: Failure. Failed Stage: U.
  • TVC test - . Nation: Japan. Agency: ISAS. Apogee: 1,500 km (900 mi).

1971 August 20 - . 04:00 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. LV Family: R-5. Launch Vehicle: R-5V.
  • Vertikal-2 Solar Ultraviolet/Solar X-ray mission - . Nation: USSR. Agency: AN. Apogee: 500 km (310 mi).

1971 August 20 - . 07:30 GMT - . Launch Site: Wallops Island. LV Family: Cajun. Launch Vehicle: Nike Cajun. LV Configuration: Nike Cajun NASA 10.390GM.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 132 km (82 mi).

1971 August 20 - . 07:45 GMT - . Launch Site: Wallops Island. LV Family: Apache. Launch Vehicle: Nike Apache. LV Configuration: Nike Apache NASA 14.492GM.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 180 km (110 mi).

1971 August 20 - . 09:19 GMT - . Launch Site: Wallops Island. LV Family: Apache. Launch Vehicle: Nike Apache. LV Configuration: Nike Apache NASA 14.475UI.
  • Ionosphere mission - . Nation: USA. Agency: NASA. Apogee: 193 km (119 mi).

1971 August 20 - . 09:44 GMT - . Launch Site: Wallops Island. LV Family: Apache. Launch Vehicle: Nike Apache. LV Configuration: Nike Apache NASA 14.476UI.
  • Ionosphere mission - . Nation: USA. Agency: NASA. Apogee: 198 km (123 mi).

1971 August 20 - . 10:14 GMT - . Launch Site: Wallops Island. LV Family: Apache. Launch Vehicle: Nike Apache. LV Configuration: Nike Apache NASA 14.477UI.
  • Ionosphere mission - . Nation: USA. Agency: NASA. Apogee: 200 km (120 mi).

1971 August 20 - . 12:10 GMT - . Launch Site: Kagoshima. LV Family: Kappa. Launch Vehicle: Kappa 10. LV Configuration: Kappa 10 K-10-7.
  • Optical astronomy mission - . Nation: Japan. Agency: ISAS. Apogee: 274 km (170 mi).

1971 August 20 - . 19:56 GMT - . Launch Site: Wallops Island. LV Family: Cajun. Launch Vehicle: Nike Cajun. LV Configuration: Nike Cajun NASA 10.389GM.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 125 km (77 mi).

1972 August 20 - . 14:00 GMT - . Launch Site: Molodezhnaya. LV Family: M-100. Launch Vehicle: M-100.
  • - . Nation: USSR. Apogee: 92 km (57 mi).

1973 August 20 - . 10:09 GMT - . Launch Site: Poker Flat. Launch Vehicle: Rocketsonde.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 61 km (37 mi).

1974 August 20 - . 09:55 GMT - . Launch Site: Kagoshima. LV Family: S. Launch Vehicle: S-210. LV Configuration: S-210-10.
  • NNP / NEL / TEL Aeronomy / ionosphere mission - . Nation: Japan. Agency: ISAS. Apogee: 112 km (69 mi).

1974 August 20 - . 11:09 GMT - . Launch Site: Grand Turk Island DZ. Launch Pad: Aircraft from Cape Canaveral. Launch Platform: B-52. LV Family: SRAM. Launch Vehicle: SRAM. FAILURE: Failure.
  • Test mission - . Nation: USA. Agency: USAF. Apogee: 10 km (6 mi).

1975 August 20 - .
  • X-24 Flight 56 - . Crew: Love, Michael. Payload: X-24B flight 28. Nation: USA. Related Persons: Love, Michael. Class: Manned. Type: Manned spaceplane. Spacecraft: X-24B. Summary: Maximum Speed - 1625 kph. Maximum Altitude - 21950 m. Flight Time - 420 sec..

1975 August 20 - . 21:22 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. LV Family: Titan. Launch Vehicle: Titan 3E. LV Configuration: Titan IIIE 23E-4 / Centaur D-1T E-4.
  • Viking 1 Orbiter - . Payload: Viking 1. Mass: 3,399 kg (7,493 lb). Nation: USA. Agency: JPL. Class: Mars. Type: Mars probe. Spacecraft: Viking. USAF Sat Cat: 8108 . COSPAR: 1975-075A. Summary: Combined Mars orbiter and lander mission; orbiter inserted in Mars orbit 6/19/76; lander soft landed on Martian surface 7/20/76Mars. Mars Orbit. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B)..
  • Viking 1 Lander - . Payload: Viking 1. Nation: USA. Agency: NASA Langley. Class: Mars. Type: Mars probe. Spacecraft: Viking. Decay Date: 1976-07-20 . USAF Sat Cat: 9024 . COSPAR: 1975-075C. Summary: Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .

1976 August 20 - .
  • Complete horizontal ground vibration tests - . Nation: USA. Program: STS.

1976 August 20 - . 00:42 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. LV Family: MR-12. Launch Vehicle: MR-12.
  • Aeronomy/Ionosphere/Chemical release/Plasma mission - . Nation: USSR. Apogee: 160 km (90 mi).

1976 August 20 - . 02:15 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. LV Family: MR-12. Launch Vehicle: MR-12.
  • Aeronomy/Chemical release/Plasma mission - . Nation: USSR. Apogee: 160 km (90 mi).

1976 August 20 - . 05:15 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. LV Family: MR-12. Launch Vehicle: MR-12.
  • Aeronomy/Chemical release/Plasma mission - . Nation: USSR. Apogee: 160 km (90 mi).

1976 August 20 - . 09:00 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. LV Family: MR-12. Launch Vehicle: MR-12.
  • Aeronomy/Chemical release/Plasma mission - . Nation: USSR. Apogee: 160 km (90 mi).

1976 August 20 - . 13:45 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. LV Family: MR-12. Launch Vehicle: MR-12.
  • Aeronomy/Chemical release/Plasma mission - . Nation: USSR. Apogee: 160 km (90 mi).

1976 August 20 - . 22:48 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 636. Launch Vehicle: Poseidon.
  • FOT-22? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 August 20 - . 22:50 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 636. Launch Vehicle: Poseidon.
  • FOT-22? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 August 20 - . 14:29 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. LV Family: Titan. Launch Vehicle: Titan 3E. LV Configuration: Titan IIIE 23E-7 / Centaur D-1T E-7.
  • Voyager 2 - . Payload: Voyager 2 [Star-37E]. Mass: 800 kg (1,760 lb). Nation: USA. Agency: JPL. Class: Outer planets. Type: Outer planets probe. Spacecraft: Voyager. USAF Sat Cat: 10271 . COSPAR: 1977-076A. Summary: Jupiter flyby 7/9/79, Saturn flyby 8/26/81, Uranus flyby 1/24/86, Neptune flyby 8/25/89. Solar system escape trajectory. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B)..

1978 August 20 - .
  • Kamanin in Star City. - . Nation: USSR. Related Persons: Ivanchenkov; Kovalyonok; Yeliseyev. Program: Salyut 6. Flight: Salyut 6 EO-2. Summary: At a visit to Star City, Kamanin is allowed to participate together with Yeliseyev in a communications session with the EO-2 crew (Ivanchenkov, Kovalyonok) aboard Salyut 6..

1978 August 20 - . 11:30 GMT - . Launch Site: Kagoshima. LV Family: Kappa. Launch Vehicle: Kappa 9M. LV Configuration: Kappa 9M K-9M-64.
  • Near infrared Galactic Plane Test / infrared astronomy / ultraviolet astronomy mission - . Nation: Japan. Agency: ISAS. Apogee: 319 km (198 mi).

1979 August 20 - . 14:00 GMT - . Launch Site: Sea-launched. Launch Pad: UNKO. Launch Platform: SHOK. LV Family: M-100. Launch Vehicle: M-100.
  • - . Nation: USSR. Apogee: 85 km (52 mi).

1980 August 20 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF26. Launch Pad: LF26?. LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • FOT GT76GB Follow-on Test launch - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1980 August 20 - . 21:19 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 625. Launch Vehicle: Poseidon.
  • FOT-42? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 August 20 - . 21:19 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 625. Launch Vehicle: Poseidon.
  • FOT-42? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 August 20 - . 21:27 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 625. Launch Vehicle: Poseidon.
  • FOT-42? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 August 20 - . 21:32 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 625. Launch Vehicle: Poseidon.
  • FOT-42? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1981 August 20 - . 02:00 GMT - . Launch Site: Ryori. LV Family: MT-135. Launch Vehicle: MT-135P. LV Configuration: MT-135P-R430.
  • Meteorological mission - . Nation: Japan. Agency: JMA. Apogee: 54 km (33 mi).

1982 August 20 - .
  • Death of Arthur Harry Rude - . Nation: USA. Related Persons: Rude. Summary: American manager. Vice-President of Aerojet, 1944-1966..

1982 August 20 - . 09:50 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC41/1. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
  • Cosmos 1401 - . Mass: 6,300 kg (13,800 lb). Nation: USSR. Agency: MOM. Program: Resurs. Class: Earth. Type: Earth resources satellite. Spacecraft: Resurs F1-17F41. Duration: 14.00 days. Decay Date: 1982-09-03 . USAF Sat Cat: 13427 . COSPAR: 1982-081A. Apogee: 260 km (160 mi). Perigee: 210 km (130 mi). Inclination: 82.3000 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.

1985 August 20 - . 20:05 GMT - . Launch Site: Kheysa. LV Family: M-100. Launch Vehicle: M-100B.
  • - . Nation: USSR. Apogee: 84 km (52 mi).

1986 August 20 - . 12:58 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC90/19. Launch Pad: LC90/pad?. LV Family: Tsiklon. Launch Vehicle: Tsiklon-2.
  • Cosmos 1771 - . Mass: 3,800 kg (8,300 lb). Nation: USSR. Agency: MO. Program: RORSAT. Class: Surveillance. Type: Military naval surveillance radar satellite. Spacecraft: US-A. Decay Date: 1986-11-29 . USAF Sat Cat: 17036 . COSPAR: 1986-062D. Apogee: 1,000 km (600 mi). Perigee: 909 km (564 mi). Inclination: 65.0000 deg. Period: 104.20 min. Summary: Ocean surveillance; nuclear powered..

1987 August 20 - . 15:00 GMT - . Launch Site: Ascension. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 59 km (36 mi).

1991 August 20 - . 22:54 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz 11A511U2. LV Configuration: Soyuz 11A511U2 G15000-047.
  • Progress M-9 - . Payload: Progress M s/n 210. Mass: 7,311 kg (16,117 lb). Nation: USSR. Agency: MOM. Program: Mir. Class: Manned. Type: Manned logistics spacecraft. Flight: Mir EO-9; Mir LD-3. Spacecraft: Progress M. Duration: 40.39 days. Completed Operations Date: 1991-10-01 08:24:38 . Decay Date: 1991-10-01 08:24:38 . USAF Sat Cat: 21662 . COSPAR: 1991-057A. Apogee: 230 km (140 mi). Perigee: 186 km (115 mi). Inclination: 51.6000 deg. Period: 88.70 min. Unmanned resupply vessel to Mir; carried reentry capsule for return of 150 kg of experiment results. Docked with Mir on 23 Aug 1991 00:54:17 GMT. Undocked on 30 Sep 1991 01:53:00 GMT. 350 kg return capsule detached from the Propess' orbital module at an altitude of 110 to 130 km. The capsule underwent a ballistic descent to 15 km, followed by a parachute descent from there to surface. The capsule's beacon began transmitting at 4.5 km. Landed in Kazakhstan on 30 Sep 1991 08:16:24 GMT. Total free-flight time 2.35 days. Total docked time 38.04 days.

1992 August 20 - .
  • Death of Ivan Nikolayevich Anikeyev at Bezhetsk (?), Russia. Natural causes. - . Nation: Russia. Related Persons: Anikeyev. Summary: Russian pilot cosmonaut, 1960-1963. Left with Filatyev and Nelyubov after alcohol incident. After discharge, again served as Air Force pilot and then navigation officer for ground control services of the Soviet Air Force..

1993 August 20 - . 18:27 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 739. LV Family: Trident. Launch Vehicle: Trident D-5. LV Configuration: Trident D-5 DASO-11.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1994 August 20 - . 02:18 GMT - . Launch Site: Alcantara. LV Family: Hawk. Launch Vehicle: Nike Orion. LV Configuration: Nike Orion NASA 31.103GE.
  • GUARA MALTED / CADRE Ionosphere mission - . Nation: USA. Agency: NASA Greenbelt. Apogee: 125 km (77 mi).

1996 August 20 - . 15:30 GMT - . Launch Site: Kagoshima. Launch Complex: Kagoshima L. Launch Pad: K. LV Family: S. Launch Vehicle: S-310. LV Configuration: S-310-26.
  • SEEK-1 Plasma mission - . Nation: Japan. Agency: ISAS. Apogee: 177 km (109 mi).

1996 August 20 - . 16:00 GMT - . Launch Site: White Sands. Launch Complex: White Sands LC36. LV Family: Black Brant. Launch Vehicle: Black Brant 9CM1. LV Configuration: Black Brant 9CM1 NASA 36.130NS.
  • Solar mission - . Nation: USA. Agency: NASA. Apogee: 300 km (180 mi).

1998 August 20 - .
  • U.S. cruise missiles hit suspected terrorist bases in Sudan and Afghanistan - . Nation: USA.

1999 August 20 - .
  • Starchaser 3a launch. - . Nation: UK. Program: X-Prize. Spacecraft: Starchaser 5. Summary: Starchaser Industries (Hyde, England, UK) successfully launches Starchaser 3a vehicle..

1999 August 20 - . 08:45 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF10. LV Family: Minuteman. Launch Vehicle: Minuteman 3. LV Configuration: Minuteman 3 GT170GM.
  • RCT-1 GT170GM/RRF-6 operational test launch - . Nation: USA. Agency: USAF AFSPC. Apogee: 1,300 km (800 mi).

1999 August 20 - . 11:27 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF09. Launch Pad: LF09?. LV Family: Minuteman. Launch Vehicle: Minuteman 3. LV Configuration: Minuteman 3 GT171GM.
  • FOT GT171GM Follow-on Test launch - . Nation: USA. Agency: USAF AFSPC. Apogee: 1,300 km (800 mi).

2001 August 20 - . 18:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39A. LV Family: Shuttle. Launch Vehicle: Shuttle. LV Configuration: Space Shuttle STS-105.
  • Simplesat - . Mass: 52 kg (114 lb). Nation: USA. Agency: NASA. Class: Astronomy. Type: X-ray astronomy satellite. Spacecraft: Simplesat. Decay Date: 2002-01-30 . USAF Sat Cat: 26889 . COSPAR: 2001-035B. Apogee: 135 km (83 mi). Perigee: 130 km (80 mi). Inclination: 51.6000 deg. Period: 87.10 min. Summary: Simplesat was small astronomical test satellite ejected from a GAS Cannister in shuttle Discovery's payload bay. No contact was ever made with Simplesat after its release; evidently the satellite failed. .

2003 August 20 - . 11:05 GMT - . Launch Site: Wallops Island. LV Family: Terrier. Launch Vehicle: Terrier Orion. LV Configuration: Terrier Orion NASA 41.040DP.
2004 August 20 - .
2010 August 20 - . LV Family: Shahab. Launch Vehicle: Shahab 3. LV Configuration: Qiam-1.
  • Shahab RV - . Nation: Iran. Apogee: 100 km (60 mi). Summary: Test mission..

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