Chronology - Quarter 3 1973 home
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1973 July 1 - Launch Site: Plesetsk. Launch Complex: -. Launch Pad: -. Launch Vehicle: Temp-2S.
  • Test mission Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 July 1 - Launch Site: Baikonur. Launch Complex: -. Launch Pad: -. Launch Vehicle: UR-100N. Model: UR-100N.
  • State trials missile test Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 July - Launch Vehicle: Ariane. Model: Ariane 1.
  • Development of Ariane 1 launch vehicle authorised. Nation: France. Development took eight years, and cost 2 billion 1986 ECU's.
1973 July 1 - 10:15 GMT - Launch Site: Atlantic Ocean. Launch Complex: -. Launch Pad: 50.0 N x 30.0 W. Launch Vehicle: MR-12. LV Configuration: MR-12 B-37.
  • Ionosphere mission Nation: USSR. Apogee: 175 km (108 mi). References: 2.
1973 July 2 - 07:45 GMT - Launch Site: White Sands. Launch Complex: -. Launch Pad: -. Launch Vehicle: Aerobee. Model: Aerobee 170. LV Configuration: Aerobee 170 NASA 13.87UG.
  • Astronomy mission Nation: USA. Agency: NASA. Apogee: 176 km (109 mi). References: 2.
1973 July 2 - 12:30 GMT - Launch Site: South Uist. Launch Complex: -. Launch Pad: -. Launch Vehicle: Petrel. Model: Petrel 1. LV Configuration: Petrel P163H.
  • Composition Ionosphere mission Nation: UK. Agency: SRC. Apogee: 136 km (84 mi). References: 2.
1973 July 4 - Launch Site: Baikonur. Launch Complex: LC140/18. Launch Pad: -. Launch Vehicle: R-36M.
  • State trials missile test Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 July 4 - Launch Site: Plesetsk. Launch Complex: LC43/3. Launch Pad: LC43/pad?. Launch Vehicle: Soyuz. Model: Voskhod 11A57. FAILURE: Failure.
  • Zenit-4M Nation: USSR. Class: Surveillance. Type: Military. Spacecraft: Zenit-4M. Agency: RVSN. COSPAR: F730704A. High resolution photo reconnaissance mission. References: 279.
1973 July 4 - 01:15 GMT - Launch Site: Thumba. Launch Complex: -. Launch Pad: -. Launch Vehicle: Belier. Model: Centaure 2A. LV Configuration: Centaure 2A ISRO 5.21.
  • ISRO 5.21 Fields mission Nation: India. Agency: ISRO. Apogee: 150 km (90 mi). References: 2.
1973 July 4 - 03:27 GMT - Launch Site: Andoya. Launch Complex: -. Launch Pad: -. Launch Vehicle: Black Brant. Model: Black Brant 5C. LV Configuration: Black Brant VC A-BBVC-49.
  • DLR A-BBVC-49 Barbara Aeronomy /ionosphere mission Nation: Germany. Agency: DFVLR. Apogee: 260 km (160 mi). References: 2.
1973 July 6 - Launch Site: Vandenberg. Launch Complex: LF25. Launch Pad: -. Launch Vehicle: Minuteman 3.
  • OT GT23GB operational test launch Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi). References: 2.
1973 July 9 - Launch Site: Baikonur. Launch Complex: LC173. Launch Pad: -. Launch Vehicle: MR-UR-100. Model: MR-UR-100.
  • State trials missile test Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 July 11 - 09:58 GMT - Launch Site: Plesetsk. Launch Complex: -. Launch Pad: -. Launch Vehicle: Soyuz. Model: Molniya 8K78M.
  • Molniya 2-06 Nation: USSR. Program: Molniya. Payload: Molniya-2. Mass: 1,600 kg (3,500 lb). Class: Communications. Spacecraft: Molniya-2. Agency: MOM. Perigee: 479 km (297 mi). Apogee: 39,292 km (24,414 mi). Inclination: 65.00 deg. Period: 706.00 min. COSPAR: 1973-045A. USAF Sat Cat: 6722. Decay Date: 1978-08-05. 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). References: 2, 6.
1973 July 12 - 14:49 GMT - Launch Site: Atlantic Ocean. Launch Complex: -. Launch Pad: 50.0 N x 30.0 W. Launch Vehicle: MR-12. LV Configuration: MR-12 B-38.
  • Aeronomy/Ionosphere mission Nation: USSR. Apogee: 175 km (108 mi). References: 2.
1973 July 13 - 20:24 GMT - Launch Site: Vandenberg. Launch Complex: SLC4E. Launch Pad: -. Launch Vehicle: Titan. Model: Titan 3D. LV Configuration: Titan IIID 23D-7.
  • KH-9 no. 06 Nation: USA. Mass: 13,300 kg (29,300 lb). Class: Surveillance. Type: Military. Spacecraft: KH-9. Agency: NRO/CIA. Perigee: 143 km (88 mi). Apogee: 291 km (180 mi). Inclination: 96.20 deg. Period: 88.80 min. COSPAR: 1973-046A. USAF Sat Cat: 6727. Decay Date: 1973-10-12. KH-9 type satellite. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). References: 2, 6.
1973 July 15 - 16:09 GMT - Launch Site: Syowa Base. Launch Complex: -. Launch Pad: -. Launch Vehicle: S. Model: S-210. LV Configuration: S-210JA-19.
  • Auroral mission Nation: Japan. Agency: NIPR. Apogee: 131 km (81 mi). References: 2.
1973 July 16 - 17:10 GMT - Launch Site: Vandenberg. Launch Complex: SLC2W. Launch Pad: -. Launch Vehicle: Delta. Model: Delta 0300. LV Configuration: Delta 0300 578/D96. FAILURE: Second stage failure.
  • ITOS E Nation: USA. Program: Tiros. Payload: ITOS E. Mass: 345 kg (760 lb). Class: Earth. Type: Weather. Spacecraft: ITOS. Agency: NASA. COSPAR: F730716A. Decay Date: 1973-07-16. Improved TIROS Operational System. References: 126.
1973 July 17 - Launch Site: Woomera. Launch Complex: LA2. Launch Pad: LA2 SL. Launch Vehicle: Skylark. Model: Skylark 3 AC. LV Configuration: Skylark 3 AC SL1291.
  • Aeronomy mission? Nation: UK. Agency: BAC. Apogee: 210 km (130 mi). References: 2.
1973 July 17 - 15:22 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Cajun. Model: Nike Cajun. LV Configuration: Nike Cajun NASA 10.416GM.
  • Aeronomy mission Nation: USA. Agency: NASA. Apogee: 117 km (72 mi). References: 2.
1973 July 17 - 16:41 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Cajun. Model: Nike Cajun. LV Configuration: Nike Cajun NASA 10.417GM.
  • Aeronomy mission Nation: USA. Agency: NASA. Apogee: 116 km (72 mi). References: 2.
1973 July 17 - 17:35 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Viper. Model: Viper-Dart. LV Configuration: Viper-Dart E 1-6685.
  • Test mission Nation: USA. Agency: USA. Apogee: 134 km (83 mi). References: 2.
1973 July 17 - 22:13 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Javelin. LV Configuration: Javelin NASA 8.61UA.
  • Aeronomy mission Nation: USA. Agency: NASA. Apogee: 724 km (449 mi). References: 2.
1973 July 18 - 02:40 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Viper. Model: Viper-Dart. LV Configuration: Viper-Dart E 1-6686.
  • Test mission Nation: USA. Agency: USA. Apogee: 141 km (87 mi). References: 2.
1973 July 18 - 03:14 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Loki. Model: Super Loki. LV Configuration: Super Loki G 1-6687.
  • Test mission Nation: USA. Agency: MRN. Apogee: 116 km (72 mi). References: 2.
1973 July 18 - 04:17 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Cajun. Model: Nike Cajun. LV Configuration: Nike Cajun NASA 10.418GM.
  • Aeronomy mission Nation: USA. Agency: NASA. Apogee: 115 km (71 mi). References: 2.
1973 July 18 - 05:02 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Loki. Model: Super Loki. LV Configuration: Super Loki G 1-6689.
  • Test mission Nation: USA. Agency: MRN. Apogee: 115 km (71 mi). References: 2.
1973 July 18 - 06:00 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Cajun. Model: Nike Cajun. LV Configuration: Nike Cajun NASA 10.419GM.
  • Aeronomy mission Nation: USA. Agency: NASA. Apogee: 121 km (75 mi). References: 2.
1973 July 18 - 07:31 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Viper. Model: Viper-Dart. LV Configuration: Viper-Dart E 1-6693.
  • Test mission Nation: USA. Agency: USA. Apogee: 133 km (82 mi). References: 2.
1973 July 19 - 1973 July 19 - 21:21 GMT - Launch Site: Atlantic Ocean. Launch Complex: -. Launch Pad: 50.0 N x 30.0 W. Launch Vehicle: MR-12. LV Configuration: MR-12 B-39.
  • Aeronomy/Ionosphere mission Nation: USSR. Apogee: 175 km (108 mi). References: 2.
1973 July 20 - Launch Site: Biscarosse. Launch Complex: BLB. Launch Pad: -. Launch Vehicle: MSBS. Model: MSBS M2.
  • Operational test Nation: France. Agency: DMA. Apogee: 600 km (370 mi). References: 2.
1973 July 20 - 06:48 GMT - Launch Site: Atlantic Ocean. Launch Complex: -. Launch Pad: 50.0 N x 30.0 W. Launch Vehicle: MR-12. LV Configuration: MR-12 B-40.
  • Aeronomy/Ionosphere mission Nation: USSR. Apogee: 175 km (108 mi). References: 2.
1973 July 21 - Launch Site: Baikonur. Launch Complex: LC161/35. Launch Pad: -. Launch Vehicle: Tsiklon. Model: R-36 8K67PM. FAILURE: Failure.
  • State trials missile test Nation: USSR. Agency: RVSN. Apogee: 0 km ( mi). References: 2.
1973 July 21 - 00:00 GMT - Launch Site: Vandenberg. Launch Complex: LF06. Launch Pad: -. Launch Vehicle: Minuteman 1. Model: Minuteman 1B.
  • SSTTP M2-18 Target mission Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi). References: 2.
1973 July 21 - 19:30 GMT - Launch Site: Baikonur. Launch Complex: LC81/23. Launch Pad: -. Launch Vehicle: Proton. Model: Proton-K/D. LV Configuration: Proton-K/D 261-01.
  • Mars 4 Nation: USSR. Program: Mars. Payload: M-73 s/n 52S. Mass: 4,650 kg (10,250 lb). Class: Planetary. Type: Mars. Spacecraft: Mars M-73. Agency: MOM. COSPAR: 1973-047A. USAF Sat Cat: 6742. Failed; did not enter Martian orbit as planned; intended to be a Mars orbiter mission. Mars 4 reached Mars on 10 February 1974. Due to use of helium in preflight tests of the computer chips, which resulted in degradation of the chips during the voyage to Mars, the retro-rockets never fired to slow the craft into Mars orbit. Mars 4 flew by the planet at a range of 2,200 km. It returned one swath of pictures and some radio occultation data. Final heliocentric orbit 1.02 x 1.63 AU, 2.2 degree inclination, 556 day period. References: 2, 6, 67, 118, 274, 296.
1973 July 23 - 12:23 GMT - Launch Site: South Uist. Launch Complex: -. Launch Pad: -. Launch Vehicle: Petrel. Model: Petrel 1. LV Configuration: Petrel P45H.
  • XRB scintillator tel X-ray astronomy mission Nation: UK. Agency: SRC. Apogee: 143 km (88 mi). References: 2.
1973 July 25 - Launch Site: Baikonur. Launch Complex: LC177. Launch Pad: -. Launch Vehicle: MR-UR-100. Model: MR-UR-100.
  • State trials missile test Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 July 25 - 11:30 GMT - Launch Site: Plesetsk. Launch Complex: -. Launch Pad: -. Launch Vehicle: Soyuz. Model: Voskhod 11A57.
  • Cosmos 577 Nation: USSR. Mass: 6,300 kg (13,800 lb). Class: Surveillance. Type: Military. Spacecraft: Zenit-4M. Agency: MOM. Perigee: 175 km (108 mi). Apogee: 309 km (192 mi). Inclination: 65.40 deg. Period: 89.30 min. COSPAR: 1973-048A. USAF Sat Cat: 6745. Duration: 13.00 days. Decay Date: 1973-08-07. High resolution photo reconnaissance satellite; returned film capsule; maneuverable. References: 2, 6.
1973 July 25 - 15:45 GMT - Launch Site: White Sands. Launch Complex: -. Launch Pad: -. Launch Vehicle: Aerobee. Model: Aerobee 200A. LV Configuration: Aerobee 200A NASA 26.04GP.
  • Test mission Nation: USA. Agency: NASA. Apogee: 276 km (171 mi). References: 2.
1973 July 25 - 18:55 GMT - Launch Site: Baikonur. Launch Complex: LC81/24. Launch Pad: -. Launch Vehicle: Proton. Model: Proton-K/D. LV Configuration: Proton-K/D 262-01.
  • Mars 5 Nation: USSR. Program: Mars. Payload: M-73 s/n 53S. Mass: 4,650 kg (10,250 lb). Class: Planetary. Type: Mars. Spacecraft: Mars M-73. Agency: MOM. COSPAR: 1973-049A. USAF Sat Cat: 6754. Mars probe intended to enter Martian orbit and comprehensively photograph Mars. Parameters are for Mars orbit. Mars 5 reached Mars on 12 February 1974 and was inserted into a 1760 km x 32,586 km orbit. Due to computer chip failures the orbiter operated only a few days and returned atmospheric data and images of a small portion of the Martian southern hemisphere. References: 2, 6, 67, 118, 274, 296.
1973 July 26 - Launch Site: Vandenberg. Launch Complex: LF05. Launch Pad: -. Launch Vehicle: Minuteman 2.
  • ERCS GIANT MOON 4 Communications mission Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi). References: 2.
1973 July 28 - 01:06 GMT - Launch Site: White Sands. Launch Complex: -. Launch Pad: -. Launch Vehicle: Tomahawk Sandia. Model: Nike Tomahawk. LV Configuration: Nike Tomahawk NASA 18.153UA.
  • Aeronomy mission Nation: USA. Agency: NASA. Apogee: 120 km (70 mi). References: 2.
1973 July 28 - 11:10 GMT - Launch Site: Cape Canaveral. Launch Complex: LC39B. Launch Pad: -. Launch Vehicle: Saturn I. Model: Saturn IB. LV Configuration: Saturn IB SA-207.
  • Skylab 3 Nation: USA. Program: Skylab. Payload: Apollo CSM 117. Mass: 20,121 kg (44,359 lb). Class: Manned. Type: Lunar spacecraft. Spacecraft: Apollo CSM. Location of Spacecraft: Glenn Research Center, NASA, Cleveland, OH. Agency: NASA MSC. Perigee: 422 km (262 mi). Apogee: 442 km (274 mi). Inclination: 50.00 deg. Period: 93.20 min. COSPAR: 1973-050A. USAF Sat Cat: 6757. Duration: 59.46 days. Decay Date: 1973-09-25. Crew: Bean, Garriott, Lousma. Flight: Skylab 3. Continued maintenance of the Skylab space station and extensive scientific and medical experiments. Installed twinpole solar shield on EVA; performed major inflight maintenance; doubled record for length of time in space. Completed 858 Earth orbits and 1,081 hours of solar and Earth experiments; three EVAs totalled 13 hours, 43 minutes.

    The space vehicle, consisting of a modified Apollo command and service module payload on a Saturn IB launch vehicle, was inserted into a 231.3 by 154.7 km orbit. Rendezvous maneuvers were performed during the first five orbits as planned. During the rendezvous, the CSM reaction control system forward firing engine oxidizer valve leaked. The quad was isolated. Station-keeping with the Saturn Workshop began approximately 8 hours after liftoff, with docking being performed about 30 minutes later. References: 2, 6, 33,60.

1973 July 30 - Launch Site: Baikonur. Launch Complex: LC103. Launch Pad: -. Launch Vehicle: R-36M.
  • Joint flight trials launch Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 August 1 -
  • X-24 Flight 29 Nation: USA. Payload: X-24B flight 1. Class: Manned. Type: Spaceplane. Spacecraft: X-24B. Crew: Manke. First glide flight. Maximum Speed - 740 kph. Maximum Altitude - 12190 m. Flight Time - 252 sec. References: 49, 97.
1973 August 1 - Launch Site: Plesetsk. Launch Complex: -. Launch Pad: -. Launch Vehicle: Temp-2S.
  • Test mission Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 August 1 - Launch Site: Baikonur. Launch Complex: -. Launch Pad: -. Launch Vehicle: UR-100N. Model: UR-100N.
  • State trials missile test Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 August 1 - 14:00 GMT - Launch Site: Plesetsk. Launch Complex: -. Launch Pad: -. Launch Vehicle: Soyuz. Model: Voskhod 11A57.
  • Cosmos 578 Nation: USSR. Mass: 6,000 kg (13,200 lb). Class: Surveillance. Type: Military. Spacecraft: Zenit-2M. Agency: MOM. Perigee: 200 km (120 mi). Apogee: 292 km (181 mi). Inclination: 65.40 deg. Period: 89.40 min. COSPAR: 1973-051A. USAF Sat Cat: 6759. Duration: 12.00 days. Decay Date: 1973-08-13. Area survey photo reconnaissance satellite; returned film capsule. References: 2, 6.
1973 August 1 - 22:17 GMT - Launch Site: Kiruna. Launch Complex: -. Launch Pad: -. Launch Vehicle: Apache. Model: Nike Apache. LV Configuration: Nike Apache NASA 14.515UA.
  • SSC NNA 6 Aeronomy mission Nation: Sweden. Agency: NASA/SSC. Apogee: 109 km (67 mi). References: 2.
1973 August 1 - 22:48 GMT - Launch Site: Kiruna. Launch Complex: -. Launch Pad: -. Launch Vehicle: Apache. Model: Nike Apache. LV Configuration: Nike Apache NASA 14.516UA.
  • SSC NNA 7 Aeronomy mission Nation: Sweden. Agency: NASA/SSC. Apogee: 111 km (68 mi). References: 2.
1973 August 2 -
  • Skylab 3 RCS problems Nation: USA. Flight: Skylab 3. On 2 August the service module reaction control system engines were inhibited, and the isolation valves closed because of another leak. Acceptable control modes and deorbit and entry procedures were defined, consistent with the constraints imposed by the two reaction control system problems.
1973 August 2 - Launch Site: Vandenberg. Launch Complex: LF04. Launch Pad: -. Launch Vehicle: Minuteman 2.
  • FOT GT113M Follow-on Test launch Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi). References: 2.
1973 August 3 - 16:00 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Apache. Model: Nike Apache. LV Configuration: Nike Apache NASA 14.513UI.
  • Ionosphere mission Nation: USA. Agency: NASA. Apogee: 184 km (114 mi). References: 2.
1973 August 4 - 08:10 GMT - Launch Site: Kiruna. Launch Complex: S. Launch Pad: -. Launch Vehicle: Skylark. Model: Skylark 4 AC. LV Configuration: Skylark 4 AC ER1. FAILURE: Failure.
  • UK / SSC ER1 Earth imaging mission Nation: UK. Agency: BAC/SSC. Apogee: 7.00 km (4.30 mi). References: 2.
1973 August 5 - 17:45 GMT - Launch Site: Baikonur. Launch Complex: LC81/23. Launch Pad: -. Launch Vehicle: Proton. Model: Proton-K/D. LV Configuration: Proton-K/D 281-01.
  • Mars 6 Nation: USSR. Program: Mars. Payload: M-73 s/n 50P. Mass: 4,650 kg (10,250 lb). Class: Planetary. Type: Mars. Spacecraft: Mars M-73. Agency: MOM. COSPAR: 1973-052A. USAF Sat Cat: 6768. Mars probe intended to make a soft landing on Mars. Total fueled launch mass of the lander and orbital bus was 3260 kg. It reached Mars on 12 March 1974, separated from the bus, and entered the atmosphere, where a parachute opened, slowing the descent. As the probe descended through the atmosphere it transmitted data for 150 seconds, representing the first data returned from the atmosphere of Mars. Unfortunately, the data were largely unreadable due to a flaw in a computer chip which led to degradation of the system during its journey to Mars. When the retro-rockets fired for landing, contact was lost with the craft. Mars 6 landed at about 24 degrees south, 25 degrees west in the Margaritifer Sinus region of Mars. Bus ended up in a final heliocentric orbit 1.01 x 1.67 AU, 2.2 degree inclination, 567 day period. References: 2, 6, 67, 118, 274, 296.
1973 August 5 - 23:42 GMT - Launch Site: Kiruna. Launch Complex: -. Launch Pad: -. Launch Vehicle: Apache. Model: Nike Apache. LV Configuration: Nike Apache NASA 14.507GI.
  • SSC NNA 9 Aeronomy mission Nation: Sweden. Agency: NASA/SSC. Apogee: 123 km (76 mi). References: 2.
1973 August 6 - 00:08 GMT - Launch Site: Kiruna. Launch Complex: -. Launch Pad: -. Launch Vehicle: Apache. Model: Nike Apache. LV Configuration: Nike Apache NASA 14.517UA.
  • SSC NNA 8 Aeronomy mission Nation: Sweden. Agency: NASA/SSC. Apogee: 103 km (64 mi). References: 2.
1973 August 7 -
  • NASM established a complete library of Apollo lunar photos Nation: USA. Program: Apollo. National Air and Space Museum Director Michael Collins advised JSC that NASM had established a center for research and study with responsibility for a complete library of lunar photos to document scientific results of the Apollo missions. The library would be used for original research and for planning and updating scientific parts of exhibits. References: 16.
1973 August 7 - 17:30 GMT -
  • EVA Skylab 3-1 Nation: USA. Program: Skylab. Class: Manned. Type: Space station. Spacecraft: Skylab. Crew: Garriott, Lousma. Flight: Skylab 3. EVA Duration: 0.27 days. Installed second sunshade. Replaced solar camera film cartridges. During EVA by crew members of Skylab 3, a twin-boom sunshade, developed by MSFC, was deployed over the parasol of the OWS. A redesigned and refined thermal parasol had been launched with Skylab 3. However, its use would have required jettisoning the parasol deployed by crew members of Skylab 2, with the possibility of creating the same thermal problems that existed on the OWS prior to the parasol deployment. Following erection of the twin-pole sunshade, the cabin temperature stayed at a comfortable 293-297 K (67.7°F-74.9°F). References: 66.
1973 August 9 - Launch Site: Vandenberg. Launch Complex: LF06. Launch Pad: -. Launch Vehicle: Minuteman 1. Model: Minuteman 1B.
  • SSTTP M2-20 Target mission Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi). References: 2.
1973 August 9 - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Black Brant. Model: Black Brant 4B. LV Configuration: Black Brant IVB NASA 19.07GT.
  • Test mission Nation: USA. Agency: NASA. Apogee: 250 km (150 mi). References: 2.
1973 August 9 - 17:00 GMT - Launch Site: Baikonur. Launch Complex: LC81/24. Launch Pad: -. Launch Vehicle: Proton. Model: Proton-K/D. LV Configuration: Proton-K/D 281-02.
  • Mars 7 Nation: USSR. Program: Mars. Payload: M-73 s/n 51P. Mass: 4,650 kg (10,250 lb). Class: Planetary. Type: Mars. Spacecraft: Mars M-73. Agency: MOM. COSPAR: 1973-053A. USAF Sat Cat: 6776. Mars probe intended to make a soft landing on Mars. Mars 7 reached Mars on 9 March 1974. Due to a problem in the operation of one of the onboard systems (attitude control or retro-rockets) the landing probe separated prematurely and missed the planet by 1,300 km. The early separation was probably due to a computer chip error which resulted in degradation of the systems during the trip to Mars. Ended up in a final heliocentric orbit 1.01 x 1.69 AU, 2.2 degree inclination, 574 day period. References: 2, 6, 67, 118, 274, 296.
1973 August 9 - 17:30 GMT - Launch Site: White Sands. Launch Complex: LC36. Launch Pad: -. Launch Vehicle: Black Brant. Model: Black Brant 5C. LV Configuration: Black Brant VC NASA 21.22NP-US.
  • CALROC 2 Solar extreme ultraviolet mission Nation: USA. Agency: NASA. Apogee: 269 km (167 mi). References: 2.
1973 August 9 - 20:12 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Black Brant. Model: Black Brant 4B. LV Configuration: Black Brant IVB CRL A16.000-01.
  • HI Rate Midas Conv test Nation: USA. Agency: AFCRL. Apogee: 605 km (375 mi). References: 2.
1973 August 10 - 10:52 GMT - Launch Site: White Sands. Launch Complex: LC35. Launch Pad: -. Launch Vehicle: Aerobee. Model: Aerobee 150. LV Configuration: Aerobee 150 CRL A03.211-1.
  • Bremstrahlung Plasma mission Nation: USA. Agency: AFCRL. Apogee: 168 km (104 mi). References: 2.
1973 August 10 - 15:05 GMT - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. Launch Vehicle: Apache. Model: Nike Apache. LV Configuration: Nike Apache NASA 14.514UI.
  • Ionosphere mission Nation: USA. Agency: NASA. Apogee: 188 km (116 mi). References: 2.
1973 August 13 -
  • Skylab backup Saturn V Orbital Workshop launch capability cancelled. Nation: USA. Program: Skylab. Spacecraft: Skylab. NASA decided to delete the Skylab backup Saturn V Orbital Workshop launch capability effective 15 August. All work associated with the completion, checkout, and support of Skylab backup hardware, experiments, software, facilities, and ground support equipment would be canceled immediately, except for the work that would directly support SL-3, SL-4, and rescue missions.
1973 August 14 - 08:58 GMT - Launch Site: Woomera. Launch Complex: LA2. Launch Pad: -. Launch Vehicle: Cockatoo. LV Configuration: Cockatoo 4001.
  • Aeronomy mission Nation: Australia. Agency: WRE. Apogee: 121 km (75 mi). References: 2.
1973 August 15 - Launch Site: Tonopah. Launch Complex: -. Launch Pad: -. Launch Vehicle: Tater.
  • Test mission Nation: USA. Agency: Sandia. Apogee: 5.00 km (3.10 mi). References: 2.
1973 August 15 - Launch Site: Baikonur. Launch Complex: LC101. Launch Pad: -. Launch Vehicle: R-36M.
  • Joint flight trials launch Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 August 15 - 05:45 GMT - Launch Site: White Sands. Launch Complex: -. Launch Pad: -. Launch Vehicle: Apache. Model: Nike Apache. LV Configuration: Nike Apache NASA 14.512UA.
  • Aeronomy mission Nation: USA. Agency: NASA. Apogee: 117 km (72 mi). References: 2.
1973 August 16 - Launch Vehicle: Shuttle.
  • Shuttle external tank contract Nation: USA. Boeing Michoud received the production contract, using facilities already built for Saturn V first stage construction. By 1996 the contract will have totalled $6.7 billion and covered the production of 120 external tanks. References: 44.
1973 August 16 - Launch Vehicle: Shuttle.
  • Shuttle solid rocket booster contract Nation: USA. United Space Boosters and Thiokol receive the contract. References: 44.
1973 August 17 -
  • X-24 Flight 30 Nation: USA. Payload: X-24B flight 2. Class: Manned. Type: Spaceplane. Spacecraft: X-24B. Crew: Manke. Maximum Speed - 722 kph. Maximum Altitude - 13720 m. Flight Time - 267 sec. References: 49, 97.
1973 August 17 - Launch Site: Baikonur. Launch Complex: LC162/36. Launch Pad: -. Launch Vehicle: Tsiklon. Model: R-36 8K67PM.
  • State trials missile test Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 August 17 - 04:49 GMT - Launch Site: Vandenberg. Launch Complex: SLC10W. Launch Pad: -. Launch Vehicle: Delta. Model: Thor Burner 2A. LV Configuration: Thor Burner 2A 291.
  • DMSP-Block-5B F4 Nation: USA. Program: DMSP. Payload: DMSP 7529. Mass: 195 kg (429 lb). Class: Earth. Type: Weather. Spacecraft: DMSP Block 5B. Agency: USAF. Perigee: 779 km (484 mi). Apogee: 819 km (508 mi). Inclination: 98.90 deg. Period: 100.90 min. COSPAR: 1973-054A. USAF Sat Cat: 6787. Defense Meteorological Satellite Program. References: 2, 6.
1973 August 19 - 09:55 GMT - Launch Site: Kagoshima. Launch Complex: -. Launch Pad: -. Launch Vehicle: S. Model: S-210. LV Configuration: S-210-9.
  • Aeronomy mission Nation: Japan. Agency: ISAS. Apogee: 115 km (71 mi). References: 2.
1973 August 21 - 07:00 GMT - Launch Site: Kagoshima. Launch Complex: -. Launch Pad: -. Launch Vehicle: Kappa. Model: Kappa 9M. LV Configuration: Kappa 9M K-9M-43.
  • Plasma / ionosphere mission Nation: Japan. Agency: ISAS. Apogee: 355 km (220 mi). References: 2.
1973 August 21 - 12:30 GMT - Launch Site: Plesetsk. Launch Complex: -. Launch Pad: -. Launch Vehicle: Soyuz. Model: Voskhod 11A57.
  • Cosmos 579 Nation: USSR. Mass: 6,300 kg (13,800 lb). Class: Surveillance. Type: Military. Spacecraft: Zenit-4M. Agency: MOM. Perigee: 171 km (106 mi). Apogee: 270 km (160 mi). Inclination: 65.40 deg. Period: 88.90 min. COSPAR: 1973-055A. USAF Sat Cat: 6789. Duration: 13.00 days. Decay Date: 1973-09-03. High resolution photo reconnaissance satellite; returned film capsule; maneuverable. References: 2, 6.
1973 August 21 - 16:07 GMT - Launch Site: Vandenberg. Launch Complex: SLC4W. Launch Pad: -. Launch Vehicle: Titan. Model: Titan 33B. LV Configuration: Titan 33B 33B-3 (3B-38) / Ascent Agena D.
  • Jumpseat 3 Nation: USA. Mass: 700 kg (1,540 lb). Class: Sigint. Spacecraft: Jumpseat. Agency: NRO/USAF. Perigee: 460 km (280 mi). Apogee: 39,296 km (24,417 mi). Inclination: 63.30 deg. Period: 705.70 min. COSPAR: 1973-056A. USAF Sat Cat: 6791. References: 2, 6.
1973 August 22 - 11:24 GMT - Launch Site: Plesetsk. Launch Complex: LC133/1. Launch Pad: -. Launch Vehicle: Kosmos 2. Model: Kosmos 11K63.
  • Cosmos 580 Nation: USSR. Program: DS. Payload: DS-P1-Yu s/n 59. Mass: 400 kg (880 lb). Class: Military. Type: Target. Spacecraft: DS-P1-Yu. Agency: MO SSSR. Perigee: 273 km (169 mi). Apogee: 490 km (300 mi). Inclination: 70.90 deg. Period: 92.10 min. COSPAR: 1973-057A. USAF Sat Cat: 6793. Completed Operations Date: 1974-09-04. Decay Date: 1974-04-01. Development of systems for air defence and the control of outer space. References: 2, 6, 99.
1973 August 22 - 21:53 GMT - Launch Site: Syowa Base. Launch Complex: -. Launch Pad: -. Launch Vehicle: S. Model: S-210. LV Configuration: S-210JA-18.
  • Auroral arc Aurora mission Nation: Japan. Agency: NIPR. Apogee: 129 km (80 mi). References: 2.
1973 August 23 - Launch Site: Vandenberg. Launch Complex: LF08. Launch Pad: -. Launch Vehicle: Minuteman 3. LV Configuration: Minuteman 3 PVM-3.
  • Research and development launch Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi). References: 2.
1973 August 23 - 03:45 GMT - Launch Site: White Sands. Launch Complex: -. Launch Pad: -. Launch Vehicle: Aerobee. Model: Aerobee 200A. LV Configuration: Aerobee 200A NASA 26.08GG.
  • 13-in RC Flight 1 Ultraviolet astronomy mission Nation: USA. Agency: NASA. Apogee: 213 km (132 mi). References: 2.
1973 August 23 - 22:57 GMT - Launch Site: Cape Canaveral. Launch Complex: LC36A. Launch Pad: -. Launch Vehicle: Atlas. Model: SLV-3D Centaur. LV Configuration: SLV-3D Centaur AC-31 / Centaur D-1AR 5010D.
  • Intelsat 4 F-7 Nation: International. Program: Intelsat. Mass: 1,410 kg (3,100 lb). Class: Communications. Spacecraft: Intelsat 4. Agency: Intelsat. Perigee: 36,080 km (22,410 mi). Apogee: 36,132 km (22,451 mi). Inclination: 10.40 deg. Period: 1,452.50 min. COSPAR: 1973-058A. USAF Sat Cat: 6796. Completed Operations Date: 1984-02-23. Over Atlantic Ocean. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit Positioned in geosynchronous orbit over the Atlantic Ocean at 30 deg W in 1973-1976 over the Atlantic Ocean 1 deg W in 1976-1980; over the Indian Ocean 56 deg E in 1980-1981; over the Pacific Ocean179 deg E in 1981-1982; over the Atlantic Ocean 53 deg W in 1982-1983 As of 31 August 2001 located at 74.52 deg W drifting at 4.067 deg W per day. As of 2007 Mar 10 located at 19.61E drifting at 4.058W degrees per day. References: 2, 6, 278.
1973 August 24 - 07:15 GMT - Launch Site: Green River. Launch Complex: -. Launch Pad: -. Launch Vehicle: Athena RTV. Model: Athena H. LV Configuration: Athena H H011.
  • ABC-3 re-entry vehicle test flight Nation: USA. Agency: USAF. Apogee: 200 km (120 mi). References: 2.
1973 August 24 - 10:59 GMT - Launch Site: Baikonur. Launch Complex: LC1. Launch Pad: LC1 or LC31. Launch Vehicle: Soyuz. Model: Voskhod 11A57.
  • Cosmos 581 Nation: USSR. Mass: 6,300 kg (13,800 lb). Class: Surveillance. Type: Military. Spacecraft: Zenit-4M. Agency: MOM. Perigee: 177 km (109 mi). Apogee: 276 km (171 mi). Inclination: 51.60 deg. Period: 89.00 min. COSPAR: 1973-059A. USAF Sat Cat: 6798. Duration: 13.00 days. Decay Date: 1973-09-06. High resolution photo reconnaissance satellite; returned film capsule; maneuverable. References: 2, 6.
1973 August 24 - 16:24 GMT -
  • EVA Skylab 3-2 Nation: USA. Program: Skylab. Class: Manned. Type: Space station. Spacecraft: Skylab. Crew: Garriott, Lousma. Flight: Skylab 3. EVA Duration: 0.19 days. Replaced solar camera film cartridges; installed replacement gyroscopes. References: 66.
1973 August 27 -
  • Actions for the final phaseout of the Apollo program Nation: USA. Program: Apollo. Spacecraft: Apollo CSM. Apollo Soyuz Test Project Program Director Chester M. Lee, Office of Manned Space Flight, NASA Hq., was assigned as the management official to take actions necessary for the final phaseout of the Apollo program. All Apollo program inquiries, activities, and actions not covered by specific delegations of authority would be referred to Lee for appropriate decision and disposition. References: 16.
1973 August 27 - 12:00 GMT - Launch Site: Kagoshima. Launch Complex: -. Launch Pad: -. Launch Vehicle: Kappa. Model: Kappa 9M. LV Configuration: Kappa 9M K-9M-44.
  • X-ray astronomy mission Nation: Japan. Agency: ISAS. Apogee: 341 km (211 mi). References: 2.
1973 August 28 - 10:08 GMT - Launch Site: Plesetsk. Launch Complex: LC132/2. Launch Pad: -. Launch Vehicle: Kosmos 3. Model: Kosmos 11K65M. LV Configuration: Kosmos 11K65M 65033-201.
  • Cosmos 582 Nation: USSR. Program: Tselina. Mass: 750 kg (1,650 lb). Class: Sigint. Spacecraft: Tselina-O. Agency: MO SSSR. Perigee: 519 km (322 mi). Apogee: 543 km (337 mi). Inclination: 74.00 deg. Period: 95.30 min. COSPAR: 1973-060A. USAF Sat Cat: 6802. Decay Date: 1980-09-05. Possible ELINT satellite. References: 2, 6.
1973 August 29 - Launch Site: Vandenberg. Launch Complex: 576A3. Launch Pad: -. Launch Vehicle: Atlas. Model: Atlas F. LV Configuration: Atlas F 78F.
  • BMRS RVTO-3A-2 re-entry vehicle test flight Nation: USA. Agency: USAF AFSC. Apogee: 1,400 km (800 mi). References: 2.
1973 August 30 - Launch Vehicle: Saturn I, Saturn V.
  • NASA plans release, disposition, and storage of all unneeded Skylab Program equipment. Nation: USA. Guidelines were issued by NASA Hq for release, disposition, and storage of all unneeded Skylab Program equipment. Two Saturn Vs, two Saturn IBs, three command and service modules, the backup Skylab cluster, and appropriate spares would be placed in minimum cost storage as soon as program requirements permitted.
1973 August 30 - 00:07 GMT - Launch Site: Plesetsk. Launch Complex: -. Launch Pad: -. Launch Vehicle: Soyuz. Model: Molniya 8K78M.
  • Molniya 1-24 Nation: USSR. Program: Molniya. Payload: Molniya-1. Mass: 1,600 kg (3,500 lb). Class: Communications. Spacecraft: Molniya-1. Agency: MOM. Perigee: 463 km (287 mi). Apogee: 39,893 km (24,788 mi). Inclination: 65.50 deg. Period: 717.80 min. COSPAR: 1973-061A. USAF Sat Cat: 6805. Decay Date: 1979-12-05. Uncertain if Molniya-1T model was Molniya-1 or Molniya-1T. Operation of a system of long range telephone-telegraph radiocommunication, and transmission of USSR Central Television programmes to the stations of the Orbita network. References: 2, 6.
1973 August 30 - 10:30 GMT - Launch Site: Baikonur. Launch Complex: LC1. Launch Pad: LC1 or LC31. Launch Vehicle: Soyuz. Model: Voskhod 11A57.
  • Cosmos 583 Nation: USSR. Mass: 6,000 kg (13,200 lb). Class: Surveillance. Type: Military. Spacecraft: Zenit-2M. Agency: MOM. Perigee: 204 km (126 mi). Apogee: 298 km (185 mi). Inclination: 64.90 deg. Period: 89.50 min. COSPAR: 1973-062A. USAF Sat Cat: 6809. Duration: 13.00 days. Decay Date: 1973-09-12. Area survey photo reconnaissance satellite; returned film capsule; separated capsule. References: 2, 6.
1973 August 30 - 17:01 GMT - Launch Site: White Sands. Launch Complex: LC36. Launch Pad: -. Launch Vehicle: Black Brant. Model: Black Brant 5C. LV Configuration: Black Brant VC NASA 21.07US.
  • Solar mission Nation: USA. Agency: NASA. Apogee: 299 km (185 mi). References: 2.
1973 August 31 -
  • X-24 Flight 31 Nation: USA. Payload: X-24B flight 3. Class: Manned. Type: Spaceplane. Spacecraft: X-24B. Crew: Manke. Maximum Speed - 771 kph. Maximum Altitude - 13720 m. Flight Time - 277 sec. References: 49, 97.
1973 September 1 - Launch Site: Baikonur. Launch Complex: -. Launch Pad: -. Launch Vehicle: UR-100N. Model: UR-100N.
  • State trials missile test Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 September 1 - Launch Site: Baikonur. Launch Complex: -. Launch Pad: -. Launch Vehicle: UR-100N. Model: UR-100N.
  • State trials missile test Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 September 3 - Launch Site: Baikonur. Launch Complex: LC104. Launch Pad: -. Launch Vehicle: R-36M.
  • Joint flight trials launch Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi). References: 2.
1973 September 3 - 00:03 GMT - Launch Site: South Uist. Launch Complex: -. Launch Pad: -. Launch Vehicle: Petrel. Model: Petrel 1. LV Configuration: Petrel P97H.
  • Airglow Atmospheric mission Nation: UK. Agency: SRC. Apogee: 135 km (83 mi). References: 2.
1973 September 3 - 02:04 GMT - Launch Site: South Uist. Launch Complex: -. Launch Pad: -. Launch Vehicle: Petrel. Model: Petrel 1. LV Configuration: Petrel P98H.
  • Airglow Atmospheric mission Nation: UK. Agency: SRC. Apogee: 143 km (88 mi). References: 2.
1973 September 4 - 16:45 GMT - Launch Site: White Sands. Launch Complex: LC36. Launch Pad: -. Launch Vehicle: Black Brant. Model: Black Brant 5C. LV Configuration: Black Brant VC NASA 21.13DS-NP.
  • Solar Ultraviolet/Solar X-ray mission Nation: USA. Agency: NASA. Apogee: 235 km (146 mi). References: 2.
1973 September 5 - Launch Site: Vandenberg. Launch Complex: LF02. Launch Pad: -. Launch Vehicle: Minuteman 3.
  • FOT GT43GM Follow-on Test launch Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi). References: 2.
1973 September 6 - 10:40 GMT - Launch Site: Plesetsk. Launch Complex: -. Launch Pad: -. Launch Vehicle: Soyuz. Model: Voskhod 11A57.
  • Cosmos 584 Nation: USSR. Mass: 6,300 kg (13,800 lb). Class: Surveillance. Type: Military. Spacecraft: Zenit-4M. Agency: MOM. Perigee: 205 km (127 mi). Apogee: 336 km (208 mi). Inclination: 72.90 deg. Period: 90.00 min. COSPAR: 1973-063A. USAF Sat Cat: 6818. Duration: 14.00 days. Decay Date: 1973-09-20. High resolution photo reconnaissance satellite; returned film capsule; maneuverable. References: 2, 6.
1973 September 6 - 11:39 GMT - Launch Site: South Uist. Launch Complex: -. Launch Pad: -. Launch Vehicle: Petrel. Model: Petrel 1. LV Configuration: Petrel P165H.
  • Composition / La Ionosphere mission Nation: UK. Agency: SRC. Apogee: 131 km (81 mi). References: 2.
1973 September 7 - Launch Site: Vandenberg. Launch Complex: LF06. Launch Pad: -. Launch Vehicle: Minuteman 1. Model: Minuteman 1B.
  • SSTTP M2-44 Target mission Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi). References: 2.
1973 September 7 - 01:40 GMT - Launch Site: Tanegashima. Launch Complex: T. Launch Pad: -. Launch Vehicle: S. Model: JCR. LV Configuration: JCR-9.
  • Test mission Nation: Japan. Agency: NASDA. Apogee: 200 km (120 mi). References: 2.
1973 September 8 - 01:50 GMT - Launch Site: Plesetsk. Launch Complex: LC132/2. Launch Pad: -. Launch Vehicle: Kosmos 3. Model: Kosmos 11K65M. LV Configuration: Kosmos 11K65M 60527-114.
  • Cosmos 585 Nation: USSR. Mass: 550 kg (1,210 lb). Spacecraft: Sfera. Agency: MO SSSR. Perigee: 1,375 km (854 mi). Apogee: 1,404 km (872 mi). Inclination: 74.00 deg. Period: 113.60 min. COSPAR: 1973-064A. USAF Sat Cat: 6825. Investigation of the upper atmosphere and outer space. References: 2, 6.
1973 September 10 - 00:02 GMT - Launch Site: South Uist. Launch Complex: -. Launch Pad: -. Launch Vehicle: Petrel. Model: Petrel 1. LV Configuration: Petrel P102H.
  • TMA Atmospheric mission Nation: UK. Agency: SRC. Apogee: 170 km (100 mi). References: 2.
1973 September 10 - 04:18 GMT - Launch Site: South Uist. Launch Complex: -. Launch Pad: -. Launch Vehicle: Petrel. Model: Petrel 1. LV Configuration: Petrel P103H.
  • TMA Atmospheric mission Nation: UK. Agency: SRC. Apogee: 168 km (104 mi). References: 2.
1973 September 11 - 03:19 GMT - Launch Site: White Sands. Launch Complex: -. Launch Pad: -. Launch Vehicle: Tomahawk Sandia. Model: Ute Tomahawk. LV Configuration: Ute Tomahawk CRL A09.214-1.
  • Vehicle potential test Nation: USA. Agency: USAF CRL. Apogee: 160 km (90 mi). References: 2.
1973 September 12 - Launch Site: Baikonur. Launch Complex: LC140/18. Launch Pad: -. Launch Vehicle: R-36M. FAILURE: Failure.
  • Joint flight trials launch Nation: USSR. Agency: RVSN. Apogee: 0 km ( mi). References: 2.
1973 September 13 -
  • Apollo-Soyuz Test Project (ASTP) revisit to Skylab in mid-1975 feasible. Nation: USA. Program: Skylab. Flight: Apollo (ASTP). Discussions confirmed that there was reasonable assurance that an Apollo-Soyuz Test Project (ASTP) revisit to Skylab in mid-1975 was feasible. However, such a dual mission would create a significant planning problem for the operations team and would introduce many new considerations to the inflight planning and execution because of uncertainties in the orbital mechanics.
1973 September 13 - 21:30 GMT - Launch Site: White Sands. Launch Complex: -. Launch Pad: -. Launch Vehicle: Aerobee. Model: Aerobee 170. LV Configuration: Aerobee 170 NASA 13.69GS.
  • Solar extreme ultraviolet mission Nation: USA. Agency: NASA. Apogee: 199 km (123 mi). References: 2.
1973 September 14 - 00:31 GMT - Launch Site: Plesetsk. Launch Complex: LC132/2. Launch Pad: -. Launch Vehicle: Kosmos 3. Model: Kosmos 11K65M. LV Configuration: Kosmos 11K65M 53714-106.
  • Cosmos 586 Nation: USSR. Mass: 550 kg (1,210 lb). Class: Navigation. Spacecraft: Tsiklon. Agency: MO SSSR. Perigee: 961 km (597 mi). Apogee: 1,003 km (623 mi). Inclination: 82.90 deg. Period: 104.70 min. COSPAR: 1973-065A. USAF Sat Cat: 6828. Military navigation satellite. References: 2, 6.
1973 September 15 - 04:36 GMT - Launch Site: South Uist. Launch Complex: -. Launch Pad: -. Launch Vehicle: Petrel. Model: Petrel 1. LV Configuration: Petrel P106H.
  • ELF / VLF Ionosphere mission Nation: UK. Agency: SRC. Apogee: 124 km (77 mi). References: 2.
1973 September 15 - 05:25 GMT - Launch Site: Vandenberg. Launch Complex: LF26. Launch Pad: LF26?. Launch Vehicle: Minuteman 3.
  • OT GT25GB operational test launch Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi). References: 2.
1973 September 15 - 08:23 GMT - Launch Site: Kheysa. Launch Complex: -. Launch Pad: -. Launch Vehicle: MR-12. LV Configuration: MR-12 X-141.
  • Aeronomy/Ionosphere mission Nation: USSR. Apogee: 150 km (90 mi). References: 2.
1973 September 15 - 22:15 GMT - Launch Site: ETR Launch Area. Launch Complex: -. Launch Pad: -. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch Nation: USA. Agency: USN. Apogee: 500 km (310 mi). References: 2.
1973 September 18 -
  • X-24 Flight 32 Nation: USA. Payload: X-24B flight 4. Class: Manned. Type: Spaceplane. Spacecraft: X-24B. Crew: Manke. Maximum Speed - 724 kph. Maximum Altitude - 13720 m. Flight Time - 271 sec. References: 49, 97.
1973 September 18 - Launch Site: Biscarosse. Launch Complex: BLB. Launch Pad: -. Launch Vehicle: SSBS. Model: SSBS S2. LV Configuration: SSBS S2 S-1E-2602.
  • Operational test Nation: France. Agency: DMA. Apogee: 1,000 km (600 mi). References: 2.
1973 September 18 - Launch Site: Jiuquan. Launch Complex: LA2B. Launch Pad: -. Launch Vehicle: CZ. Model: FB-1. LV Configuration: Feng Bao 1 701-03. FAILURE: Failure.
  • JSSW 1 Nation: China. Payload: JSSW 1. Spacecraft: JSSW. Agency: PRC. COSPAR: F730918A. References: 279.
1973 September 18 - 15:50 GMT - Launch Site: Poker Flat. Launch Complex: -. Launch Pad: -. Launch Vehicle: Tomahawk Sandia. Model: Ute Tomahawk. LV Configuration: Ute Tomahawk CRL A09.312-5.
  • Polar disturbed ionosphere Ionosphere mission Nation: USA. Agency: USAF CRL. Apogee: 127 km (78 mi). References: 2.
1973 September 18 - 17:21 GMT - Launch Site: Poker Flat. Launch Complex: -. Launch Pad: -. Launch Vehicle: Tomahawk Sandia. Model: Ute Tomahawk. LV Configuration: Ute Tomahawk CRL A09.312-4.
  • Polar disturbed ionosphere Ionosphere mission Nation: USA. Agency: USAF CRL. Apogee: 129 km (80 mi). References: 2.
1973 September 19 - 09:17 GMT - Launch Site: Woomera. Launch Complex: LA2. Launch Pad: -. Launch Vehicle: Kookaburra. LV Configuration: Kookaburra 2007.
  • Aeronomy mission Nation: Australia. Agency: WRE. Apogee: 121 km (75 mi). References: 2.
1973 September 21 - 13:05 GMT - Launch Site: Plesetsk. Launch Complex: -. Launch Pad: -. Launch Vehicle: Soyuz. Model: Soyuz 11A511U.
  • Cosmos 587 Nation: USSR. Mass: 6,300 kg (13,800 lb). Class: Surveillance. Type: Military. Spacecraft: Zenit-4MK. Agency: MOM. Perigee: 205 km (127 mi). Apogee: 301 km (187 mi). Inclination: 65.40 deg. Period: 89.60 min. COSPAR: 1973-066A. USAF Sat Cat: 6832. Duration: 13.00 days. Decay Date: 1973-10-04. Second flight of Soyuz U launch vehicle. High resolution photo reconnaissance satellite; returned film capsule; maneuverable. References: 2, 6.
1973 September 21 - 17:00 GMT - Launch Site: White Sands. Launch Complex: -. Launch Pad: -. Launch Vehicle: Aerobee. Model: Aerobee 200A. LV Configuration: Aerobee 200A NASA 26.20GS.
  • Extreme ultraviolet solar spectrum Solar extreme ultraviolet mission Nation: USA. Agency: NASA. Apogee: 290 km (180 mi). References: 2.
1973 September 22 - 09:20 GMT - Launch Site: Kagoshima. Launch Complex: -. Launch Pad: -. Launch Vehicle: Kappa. Model: Kappa 10. LV Configuration: Kappa 10 K-10-10.
  • X-ray astronomy / ionosphere mission Nation: Japan. Agency: ISAS. Apogee: 242 km (150 mi). References: 2.
1973 September 22 - 11:18 GMT -
  • EVA Skylab 3-3 Nation: USA. Program: Skylab. Class: Manned. Type: Space station. Spacecraft: Skylab. Crew: Bean, Garriott. Flight: Skylab 3. EVA Duration: 0.11 days. Replaced film cartridges for solar camera. References: 66.
1973 September 25 -
  • Landing of Skylab 3 Nation: USA. Program: Skylab. Flight: Skylab 3. Skylab 3 landed at 22:19 GMT.
1973 September 25 - Launch Site: Vandenberg. Launch Complex: LF04. Launch Pad: -. Launch Vehicle: Minuteman 2.
  • FOT GT115M-1 Follow-on Test launch Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi). References: 2.
1973 September 26 - 16:00 GMT - Launch Site: Natal. Launch Complex: -. Launch Pad: -. Launch Vehicle: Nike. Model: Nike Iroquois. LV Configuration: Nike Iroquois CRL A07.306-2.
  • Sphere Aeronomy mission Nation: USA. Agency: AFCRL. Apogee: 225 km (139 mi). References: 2.
1973 September 26 - 19:42 GMT - Launch Site: Natal. Launch Complex: -. Launch Pad: -. Launch Vehicle: Tomahawk Sandia. Model: Paiute Tomahawk. LV Configuration: Paiute Tomahawk CRL A10.306-1.
  • O2 / O3 / X-ray Aeronomy mission Nation: USA. Agency: USAF CRL. Apogee: 288 km (178 mi). References: 2.
1973 September 27 - 04:27 GMT - Launch Site: Natal. Launch Complex: -. Launch Pad: -. Launch Vehicle: Nike. Model: Nike Iroquois. LV Configuration: Nike Iroquois CRL A07.306-3.
  • Sphere Aeronomy mission Nation: USA. Agency: AFCRL. Apogee: 232 km (144 mi). References: 2.
1973 September 27 - 12:18 GMT - Launch Site: Baikonur. Launch Complex: LC1. Launch Pad: -. Launch Vehicle: Soyuz. Model: Soyuz 11A511.
  • Soyuz 12 Nation: USSR. Program: Salyut. Payload: Soyuz 7K-T s/n 36. Mass: 6,720 kg (14,810 lb). Class: Manned. Type: Spacecraft. Spacecraft: Soyuz 7K-T. Agency: MOM. Perigee: 306 km (190 mi). Apogee: 348 km (216 mi). Inclination: 51.00 deg. Period: 91.00 min. COSPAR: 1973-067A. USAF Sat Cat: 6836. Duration: 1.97 days. Decay Date: 1973-09-29. Crew: Lazarev, Makarov. Flight: Soyuz 12. Experimental flight for the purpose of further development of manned space craft Soyuz 7K-T modifications. After the Soyuz 11 disaster, the Soyuz underwent redesign for increased reliability. Two solo test flights of the new design were planned. Crews for the first flight were those already planned for the deferred follow-on missions to the failed DOS 2 and DOS 3 space stations. References: 2, 6, 32, 33,60.
1973 September 27 - 17:01 GMT - Launch Site: Kheysa. Launch Complex: -. Launch Pad: -. Launch Vehicle: MR-12. LV Configuration: MR-12 X-142.
  • Aeronomy/Ionosphere mission Nation: USSR. Apogee: 141 km (87 mi). References: 2.
1973 September 27 - 17:15 GMT - Launch Site: Vandenberg. Launch Complex: SLC4W. Launch Pad: -. Launch Vehicle: Titan. Model: Titan 24B. LV Configuration: Titan 24B 24B-8 (3B-42).
  • OPS 6275 Nation: USA. Payload: KH-8 no. 40 / Agena D. Mass: 3,000 kg (6,600 lb). Class: Surveillance. Type: Military. Spacecraft: KH-8. Agency: NRO/USAF. Perigee: 131 km (81 mi). Apogee: 385 km (239 mi). Inclination: 110.50 deg. Period: 89.70 min. COSPAR: 1973-068A. USAF Sat Cat: 6837. Decay Date: 1973-10-29. KH-8 type satellite. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). References: 2, 6.
1973 September 29 -
  • Landing of Soyuz 12 Nation: USSR. Program: Salyut. Flight: Soyuz 12. Soyuz 12 landed at 11:34 GMT, 400 km SW of Karaganda.
1973 September 30 - Launch Site: Vandenberg. Launch Complex: 576A1. Launch Pad: -. Launch Vehicle: Atlas. Model: Atlas F. LV Configuration: Atlas F 108F.
  • BMRS ACE-1 re-entry vehicle test flight Nation: USA. Agency: USAF AFSC. Apogee: 1,400 km (800 mi). References: 2.
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