Single launch complex consisting of 7 launch pads.

• 1958 December 16 23:44 - Operational missile test Launch Vehicle: Thor DM-18. Thor DM-18A 151 Apogee: 520 km (320 mi). Two Thor shots, one from Cape Canaveral and one from Vandenberg AFB, were successful. Intermediate range ballistic missile portion of PMR was inaugurated with successful firing of USAF Thor from Vandenberg AFB.

• 1959 January 21 - Thor Agena test Launch Vehicle: Thor Agena A. Launch vehicle failure.. Thor Agena A 160 / Agena A First flight test of Thor-Agena for KH program.

• 1959 February 28 21:49 - Discoverer 1 Launch Vehicle: Thor Agena A. Thor Agena A 163 / Agena A 1022 Apogee: 968 km (601 mi). First polar orbiting satellite; KH-1 prototype; did not carry camera or film capsule.

• 1959 April 13 21:18 - Discoverer 2 Launch Vehicle: Thor Agena A. Thor Agena A 170 / Agena A 1018 Apogee: 346 km (214 mi). KH-1 prototype; tested capsule recovery techniques; did not carry camera; capsule recovery failed. Because of a timing error, the US believed that the capsule landed somewhere on the island of Spitsbergen, north of Norway, instead of landing in the recovery zone near Hawaii. The capsule was never found; and CIA officials suspect it may have been snatched by the Soviets. The search for this capsule formed the basis of the book and film 'Ice Station Zebra'.

  In the winter of 1960/1961, a US Discovery spy satellite capsule was found by loggers near Kalinin, 200 km north of Moscow. The loggers cracked it open with an axe. Sergei Khrushchev believed this to be the Discoverer 2 capsule. What was left was examined by Soviet engineers but didn’t reveal much information - it was a polished aluminium sphere, 30 cm in diameter, gilded on the exterior. Some said it was found as early as the winter of 1959.

• 1959 April 16 20:46 - IWST test flight Launch Vehicle: Thor DM-18. Thor DM-18A 161 Apogee: 520 km (320 mi). Integrated Weapon System Training 1. First Thor IRBM launched by British crew at Vandenberg AFB.

• 1959 June 3 20:09 - Discoverer 3 Launch Vehicle: Thor Agena A. No teleemtry after Agena ignition.. Thor Agena A 174 / Agena A 1020 KH-1 prototype; did not carry camera; film capsule recovery failed.

• 1959 June 16 21:45 - IWST test flight Launch Vehicle: Thor DM-18. Autopilot error.. Thor DM-18A 191 Integrated Weapon System Training Launch 2

• 1959 June 25 22:47 - Discoverer 4 Launch Vehicle: Thor Agena A. Insufficient stage 2 velocity.. Thor Agena A 179 / Agena A 1023 KH-1; 1st generation low resolution photo surveillance. Failed to achieve orbit.

• 1959 August 3 21:41 - IWST test flight Launch Vehicle: Thor DM-18. Thor DM-18A 175 Apogee: 520 km (320 mi).

• 1959 August 13 19:00 - Discoverer 5 Launch Vehicle: Thor Agena A. Thor Agena A 192 / Agena A 1029 Apogee: 731 km (454 mi). KH-1; 1st generation low resolution photo surveillance; film capsule boosted into higher orbit, decayed 2/11/61. Mission failed. Power supply failure. No recovery.

• 1959 August 14 19:36 - IWST test flight Launch Vehicle: Thor DM-18. Early fuel depletion.. Thor DM-18A 190

• 1959 August 19 19:24 - Discoverer 6 Launch Vehicle: Thor Agena A. Thor Agena A 200 / Agena A 1028 Apogee: 846 km (525 mi). KH-1; 1st generation low resolution photo surveillance; film capsule recovery failed. Mission failed. Retro rockets malfunctioned negating recovery.

• 1959 September 17 21:09 - IWST test flight Launch Vehicle: Thor DM-18. Thor DM-18A 228 Apogee: 520 km (320 mi).

• 1959 October 6 18:26 - IWST test flight Launch Vehicle: Thor DM-18. Thor DM-18A 239 Apogee: 520 km (320 mi).

• 1959 October 21 22:57 - IWST test flight Launch Vehicle: Thor DM-18. Thor DM-18A 220 Apogee: 520 km (320 mi).

• 1959 November 7 20:28 - Discoverer 7 Launch Vehicle: Thor Agena A. Thor Agena A 206 / Agena A 1051 Apogee: 820 km (500 mi). KH-1; 1st generation low resolution photo surveillance; satellite tumbled; film capsule not recovered. Mission failed. Failed to achieve orbit.

• 1959 November 12 19:24 - IWST test flight Launch Vehicle: Thor DM-18. Thor DM-18A 181 Apogee: 520 km (320 mi).

• 1959 November 20 19:25 - Discoverer 8 Launch Vehicle: Thor Agena A. Thor Agena A 212 / Agena A 1050 Apogee: 1,661 km (1,032 mi). KH-1; 1st generation low resolution photo surveillance; film capsule recovery failed. Mission failed. Eccentric orbit negating recovery.

• 1959 December 2 05:29 - Combat training launch Launch Vehicle: Thor DM-18. Failure. Thor DM-18A 265

• 1959 December 15 02:14 - IWST test flight Launch Vehicle: Thor DM-18. Control failure.. Thor DM-18A 185

• 1960 January 21 20:10 - IWST test flight Launch Vehicle: Thor DM-18. Thor DM-18A 215 Apogee: 520 km (320 mi).

• 1960 February 4 18:51 - Discoverer 9 Launch Vehicle: Thor Agena A. Failure. Thor Agena A 218 / Agena A 1052 KH-1; 1st generation low resolution photo surveillance. Mission failed.

• 1960 February 19 20:15 - Discoverer 10 Launch Vehicle: Thor Agena A. Failure. Thor Agena A 223 / Agena A 1054 KH-1; Mission failed.

• 1960 March 2 20:06 - Combat training launch Launch Vehicle: Thor DM-18. Thor DM-18A 272 Apogee: 520 km (320 mi).

• 1960 April 15 20:30 - Discoverer 11 Launch Vehicle: Thor Agena A. Thor Agena A 234 / Agena A 1055 Apogee: 603 km (374 mi). KH-1; film capsule recovery failed. Mission failed. Attitude control system malfunctioned.

• 1960 June 22 23:26 - Combat training launch Launch Vehicle: Thor DM-18. Thor DM-18A 233 Apogee: 520 km (320 mi).

• 1960 June 29 22:00 - Discoverer 12 Launch Vehicle: Thor Agena A. Failure. Thor Agena A 160 / Agena A 1053 KH-1 prototype; designed to test capsule recovery system; did not carry camera.

• 1960 August 10 20:37 - Discoverer 13 Launch Vehicle: Thor Agena A. Thor Agena A 231 / Agena A 1057 Apogee: 683 km (424 mi). KH-1 prototype; designed to test capsule recovery system; did not carry camera; capsule successfully recovered from ocean.

• 1960 August 18 19:57 - Discoverer 14 Launch Vehicle: Thor Agena A. Thor Agena A 237 / Agena A 1056 Apogee: 803 km (498 mi). KH-1; film capsule recovered 1.2 days later; 1st successful photosurveillance mission. First successful mission. Cameras operated satisfactorily.

• 1960 September 13 22:14 - Discoverer 15 Launch Vehicle: Thor Agena A. Thor Agena A 246 / Agena A 1058 Apogee: 755 km (469 mi). KH-1; film capsule lost at sea. Mission failed. Attained orbit successfully. Capsule sank prior to retrieval.

• 1960 October 11 21:53 - Combat training launch Launch Vehicle: Thor DM-18. Thor DM-18A 186 Apogee: 520 km (320 mi).

• 1960 October 26 20:26 - Discoverer 16 Launch Vehicle: Thor Agena B. Failure. Thor Agena B 253 / Agena B 1061 KH-1; mission failed.

• 1960 November 12 20:43 - Discoverer 17 Launch Vehicle: Thor Agena B. Thor Agena B 297 / Agena B 1062 Apogee: 984 km (611 mi). KH-1; film capsule recovered 2.1 days later. Mission failed. Obtained orbit successfully. Film separated before any camera operation leaving only 1.7 ft of film in capsule. On December 2, the Air Force revealed that exceedingly valuable information had been obtained from human tissues carried by Discoverer 17 (the cover story for the mission). The tissues had been exposed to an unexpectedly heavy dose of radiation for more than 50 hours in flight.

• 1960 December 7 20:20 - Discoverer 18 Launch Vehicle: Thor Agena B. Thor Agena B 296 / Agena B 1103 Apogee: 510 km (310 mi). KH-2; film capsule recovered 3.1 days later. First successful mission employing KH-2 camera system.

• 1960 December 13 20:08 - Combat training launch Launch Vehicle: Thor DM-18. Thor DM-18A 267 Apogee: 520 km (320 mi).

• 1960 December 20 20:32 - Discoverer 19 Launch Vehicle: Thor Agena B. Thor Agena B 258 / Agena B 1101 Apogee: 359 km (223 mi). Tested IR sensors for Midas program; did not carry camera or film capsule.

• 1961 February 17 20:25 - Discoverer 20 Launch Vehicle: Thor Agena B. Thor Agena B 298 / Agena B Apogee: 491 km (305 mi). KH-5; film capsule not ejected. Mission failed. Program malfunctioned and capsule did not reenter. First attempted ARGON mission. Officially: Spacecraft Engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1961 February 18 22:58 - Discoverer 21 Launch Vehicle: Thor Agena B. Thor Agena B 261 / Agena B 1102 Apogee: 458 km (284 mi). Tested IR sensors for Midas program; did not carry camera or film capsule.

• 1961 March 30 20:34 - Discoverer 22 Launch Vehicle: Thor Agena B. Failure. Thor Agena B 300 / Agena B 1105 KH-2; Mission failed.

• 1961 March 30 05:13 - Combat training launch Launch Vehicle: Thor DM-18. Thor DM-18A 243 Apogee: 520 km (320 mi).

• 1961 April 8 19:21 - Discoverer 23 Launch Vehicle: Thor Agena B. Thor Agena B 307 / Agena B 1106 Apogee: 651 km (404 mi). KH-5; film capsule boosted into higher orbit, decayed 5/23/62. Mission failed. Loss of satellite control gas caused unstable condition. No recovery. Officially: Spacecraft Engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1961 June 8 21:16 - Discoverer 24 Launch Vehicle: Thor Agena B. Failure. Thor Agena B 302 / Agena B 1108 KH-5. Mission failed.

• 1961 June 16 23:02 - Discoverer 25 Launch Vehicle: Thor Agena B. Thor Agena B 303 / Agena B 1107 Apogee: 404 km (251 mi). KH-2; film capsule recovered 2.1 days later. Capsule recovered from water on orbit 32. Streaks throughout film.

• 1961 June 20 23:54 - Combat training launch Launch Vehicle: Thor DM-18. Thor DM-18A 276 Apogee: 520 km (320 mi).

• 1961 July 7 23:29 - Discoverer 26 Launch Vehicle: Thor Agena B. Thor Agena B 308 / Agena B 1109 Apogee: 803 km (498 mi). KH-2; film capsule recovered 2.1 days later. Main camera malfunctioned on pass 22.

• 1961 July 21 22:35 - Discoverer 27 Launch Vehicle: Thor Agena B. Failure. Thor Agena B 322 / Agena B 1110 KH-5; destroyed by range safety. Mission failed.

• 1961 August 4 00:01 - Discoverer 28 Launch Vehicle: Thor Agena B. Failure. Thor Agena B 309 / Agena B 1111 KH-2; Mission failed.

• 1961 August 30 20:00 - Discoverer 29 Launch Vehicle: Thor Agena B. Thor Agena B 323 / Agena B 1112 Apogee: 542 km (336 mi). KH-3; film capsule recovered 2.1 days later. First use of KH-3 camera system. All frames out of focus.

• 1961 September 12 19:59 - Discoverer 30 Launch Vehicle: Thor Agena B. Thor Agena B 310 / Agena B 1113 Apogee: 557 km (346 mi). KH-3; film capsule recovered 2.1 days later. Best mission to date. Same out-of-focus condition as in 9023.

• 1961 September 17 21:00 - Discoverer 31 Launch Vehicle: Thor Agena B. Thor Agena B 324 / Agena B 1114 Apogee: 403 km (250 mi). KH-3; film capsule recovery failed. Mission failed. Power failure and loss of control gas on orbit 33.

• 1961 October 13 19:22 - Discoverer 32 Launch Vehicle: Thor Agena B. Thor Agena B 328 / Agena B 1115 Apogee: 391 km (242 mi). KH-3; film capsule recovered 1.1 days later. Capsule recovered on orbit 18. 96% of film out of focus.

• 1961 October 23 19:23 - Discoverer 33 Launch Vehicle: Thor Agena B. Failure. Thor Agena B 329 / Agena B 1116 KH-3; Mission failed.

• 1961 November 5 20:00 - Discoverer 34 Launch Vehicle: Thor Agena B. Thor Agena B 330 / Agena B 1117 Apogee: 859 km (533 mi). KH-3; film capsule recovery not attempted. Mission failed. Improper launch angle resulted in extreme orbit.

• 1961 November 15 21:23 - Discoverer 35 Launch Vehicle: Thor Agena B. Thor Agena B 326 / Agena B 1118 Apogee: 278 km (172 mi). KH-3; film capsule recovered 1.1 days later. All cameras operated satisfactorily. Grainy emulsion noted.

• 1961 December 12 20:40 - Discoverer 36 Launch Vehicle: Thor Agena B. Thor Agena B 325 / Agena B 1119 Apogee: 173 km (107 mi). KH-3; film capsule recovered 4.1 days later. Best mission to date.

• 1962 January 13 21:41 - Discoverer 37 Launch Vehicle: Thor Agena B. Failure. Thor Agena B 327 / Agena B 1120 KH-3. Mission failed. Last attempted flight of KH-3 series.

• 1962 February 21 18:44 - Ferret 1 Launch Vehicle: Thor Agena B. Partial failure. Agena failed to restart to circularize orbit.. Thor Agena B 332 / Agena B 2301 Apogee: 219 km (136 mi).

• 1962 February 27 19:39 - Discoverer 38 Launch Vehicle: Thor Agena B. Thor Agena B 241 / Agena B 1123 Apogee: 277 km (172 mi). First mission of the KH-4 series. Much of film slightly out of focus.. Capsule recovered 4.1 days later.

• 1962 April 18 00:54 - Discoverer 39 Launch Vehicle: Thor Agena B. Thor Agena B 331 / Agena B 1124 Apogee: 540 km (330 mi). KH-4. Best mission to date.

• 1962 April 29 00:30 - KH-4 9033 Launch Vehicle: Thor Agena B. Thor Agena B 333 / Agena B 1125 Apogee: 475 km (295 mi). KH-4. Mission failed. Parachute ejector squibs holding parachute container cover failed to fire. No recovery.

• 1962 May 15 19:36 - KH-5 9034A Launch Vehicle: Thor Agena B. Thor Agena B 334 / Agena B 1126 Apogee: 550 km (340 mi). KH-5; film capsule recovered 4.1 days later. First successful KH-5 mission. Officially: Spacecraft Engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1962 May 30 01:00 - KH-4 9035 Launch Vehicle: Thor Agena B. Thor Agena B 336 / Agena B 1128 Apogee: 350 km (210 mi). KH-4; film capsule recovered 3.1 days later. Slight corona static on film.

• 1962 June 2 00:31 - KH-4 9036 Launch Vehicle: Thor Agena B. Thor Agena B 335 / Agena B 1127 Apogee: 401 km (249 mi). KH-4. Mission failed. During air catch, chute tore loose. Capsule sank.

• 1962 June 18 20:20 - FTV 2312 Launch Vehicle: Thor Agena B. Thor Agena B 343 / Agena B 2312

• 1962 June 23 00:30 - KH-4 9037 Launch Vehicle: Thor Agena B. Thor Agena B 339 / Agena B 1129 Apogee: 314 km (195 mi). KH-4. Corona static occurs on some film.

• 1962 June 28 01:09 - KH-4 9038 Launch Vehicle: Thor Agena D. Thor Agena D 340 / Agena D 1151 Apogee: 698 km (433 mi). KH-4; film capsule recovered 4.1 days later. Severe corona static.

• 1962 July 21 00:56 - KH-4 9039 Launch Vehicle: Thor Agena B. Thor Agena B 342 / Agena B 1130 Apogee: 376 km (233 mi). KH-4. Aborted after 6 photo passes. Heavy corona and radiation fog.

• 1962 July 28 00:30 - KH-4 9040 Launch Vehicle: Thor Agena B. Thor Agena B 347 / Agena B 1131 Apogee: 403 km (250 mi). KH-4; film capsule recovered 4.1 days later. No filters on slave horizon cameras. Heavy corona and radiation fog.

• 1962 August 2 00:17 - KH-4 9041 Launch Vehicle: Thor Agena D. Thor Agena D 344 / Agena D 1152 Apogee: 423 km (262 mi). KH-4; film capsule recovered 4.1 days later. Severe corona and radiation fog.

• 1962 August 29 01:00 - KH-4 9044 Launch Vehicle: Thor Agena D. Thor Agena D 349 / Agena D 1153 Apogee: 400 km (240 mi). KH-4; film capsule recovered 4.1 days later. Erratic vehicle attitude. Radiation fog minimal.

• 1962 September 1 20:39 - KH-5 9042A Launch Vehicle: Thor Agena B. Thor Agena B 348 / Agena B 1132 Apogee: 639 km (397 mi). KH-5. Mission failed. Parachute shrouds parted during air catch, capsule sank. Officially: Spacecraft Engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1962 September 17 23:46 - KH-4 9043 / TRS 1 (ERS 2) Launch Vehicle: Thor Agena B. Thor Agena B 350 / Agena B 1133 Apogee: 668 km (415 mi). KH-4; film capsule recovered 1.1 days later; ERS-2 subsatellite failed to deploy. Capping shutter malfunction, slight corona and radiation fog.

• 1962 September 29 06:05 - Alouette 1 Launch Vehicle: Thor Agena B. Thor Agena B 341 (TA1) / Agena B(TA1) Apogee: 1,022 km (635 mi). Ionospheric research. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).

• 1962 September 29 23:34 - KH-4 9045 Launch Vehicle: Thor Agena D. Thor Agena D 351 / Agena D 1154 Apogee: 388 km (241 mi). KH-4. First use of stellar camera, erratic vehicle attitude, numerous light leaks.

• 1962 October 9 18:35 - KH-5 9046A Launch Vehicle: Thor Agena B. Thor Agena B 352 / Agena B 1134 Apogee: 427 km (265 mi). KH-5; film capsule recovered 4.1 days later. 50% of stellar terrain film was blank due to shutter malfunction. Officially: Spacecraft Engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1962 October 26 16:14 - Starfish Radiation 1 Launch Vehicle: Thor Agena D. Thor Agena D 353 / Agena D 1401 Apogee: 5,458 km (3,391 mi). Artificial radiation data.

• 1962 November 5 22:04 - KH-4 9047 Launch Vehicle: Thor Agena B. Thor Agena B 356 / Agena B 1136 Apogee: 403 km (250 mi). KH-4; film capsule; film capsule recovered 4.1 days later. Camera door malfunctioned, flare degraded 15% of film.

• 1962 November 24 22:01 - KH-4 9048 Launch Vehicle: Thor Agena B. Thor Agena B 367 / Agena B 1135 Apogee: 339 km (210 mi). KH-4. Some film exposed through base.

• 1962 December 4 21:30 - KH-4 9049 Launch Vehicle: Thor Agena D. Thor Agena D 361 / Agena D 1155 Apogee: 273 km (169 mi). KH-4. Mission failed. During air catch chute tore, capsule sank.

• 1962 December 13 04:07 - Black Sphere Launch Vehicle: Thor Agena D. Thor Agena D 365 / Agena D 2351 Apogee: 2,385 km (1,481 mi). Identified by McDowell as probable NRL ELINT satellite.

• 1962 December 14 21:26 - KH-4 9050 Launch Vehicle: Thor Agena D. Thor Agena D 368 / Agena D 1156 Apogee: 386 km (239 mi). KH-4; film capsule recovered 4.1 days later. Best mission to date.

• 1963 January 7 21:09 - KH-4 9051 Launch Vehicle: Thor Agena D. Thor Agena D 369 / Agena D 1157 Apogee: 384 km (238 mi). KH-4. Erratic vehicle attitude. Frame ephemeris not created.

• 1963 January 16 21:59 - OPS 0180 Launch Vehicle: Thor Agena B. Thor Agena B 363 / Agena B? 2313 Apogee: 522 km (324 mi).

• 1963 February 28 21:48 - KH-4 9052 Launch Vehicle: Thor Agena D. Failure. Thor SLV-2A Agena D 354 / Agena D 1159 (No solids) KH-4. Mission failed.

• 1963 March 18 21:13 - KH-6 8001 Launch Vehicle: Thor Agena D. Failure. Thor SLV-2A Agena D 360 / Agena D 1164 (No solids) First launch of KH-6. Mission failed.

• 1963 April 1 23:01 - KH-4 9053 Launch Vehicle: Thor Agena D. Thor Agena D 376 / Agena D 1160 Apogee: 408 km (253 mi). KH-4; film capsule recovered 3.1 days later. Best imagery to date.

• 1963 April 26 20:13 - KH-5 9055A Launch Vehicle: Thor Agena D. Attitude sensors were misaligned. No orbit.. Thor Agena D 372 / Agena D 1411 Mission failed.

• 1963 May 18 22:21 - KH-6 8002 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 364 / Agena D 1165 Apogee: 506 km (314 mi). KH-6. Second launch of KH-6. Operation was successful but no film was used. Officially: Spacecraft Engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1963 June 12 23:58 - KH-4 9054 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 362 / Agena D 1161 Apogee: 416 km (258 mi). KH-4. Some imagery seriously affected by corona.

• 1963 June 15 14:29 - Lofti 2A Launch Vehicle: Thor Agena D. Thor Agena D 378 / Agena D 2353 Apogee: 876 km (544 mi). VLF experiments. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1963 June 27 00:37 - KH-4 9056 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 381 / Agena D 1166 Apogee: 338 km (210 mi). KH-4. Experimental camera carried. Film affected by light leaks.

• 1963 June 29 22:30 - OPS 1440 Launch Vehicle: Thor Agena B. Thor SLV-2A Agena B 380 / Agena B 2314 Apogee: 530 km (320 mi).

• 1963 July 19 00:00 - KH-4 9057 Launch Vehicle: Thor Agena D. Thor Agena D 388 / Agena D 1412 Apogee: 382 km (237 mi). KH-4. Best mission to date.

• 1963 July 31 00:00 - KH 4A-07 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 382 / Agena D 1167 Apogee: 455 km (282 mi). KH-6. Third and final KH-6 mission (LANYARD). Mission was successful but image quality was poor. Officially: Spacecraft Engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1963 August 25 00:30 - KH-4A 1001 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 377 / Agena D 1162 Apogee: 320 km (190 mi). KH-4A. First mission of KH-4A. Some film was fogged. Two buckets but 1001-2 was never recovered.

• 1963 August 29 20:31 - KH-4 9033 Launch Vehicle: Thor Agena D. Thor SLV-2 Agena D 394 / Agena D 1169 Apogee: 324 km (201 mi). KH-5; deployed ELINT subsatellite. Considered to be best mission to date in Argon program.

• 1963 September 23 23:00 - KH-4A 1002 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 383 / Agena D 1163 Apogee: 442 km (274 mi). KH-4A. Severe light leaks, 1002-2 never recovered, indefinite postponement of KH-4A series.

• 1963 September 28 20:22 - Transit 5BN-1 Launch Vehicle: Thor Able-Star. Thor Ablestar 375 AB013 Apogee: 1,125 km (699 mi). First test of nuclear-powered Transit operational prototype. Carried SNAP-9A nuclear power source. The satellite achieved gravity-gradient stabilization, but upside down, making the signal level too low for operational users with low-gain antennas. However, geodetic and navigational evaluation data were obtained.

• 1963 October 29 21:19 - KH-5 9059A Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 386 / Agena D 1601 Apogee: 318 km (197 mi). KH-5; deployed ELINT subsatellite. Fourth film payload retrieved in ARGON program. Film comparable to that of 9058A. Officially: Spacecraft Engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1963 November 9 20:27 - KH-4 9060 Launch Vehicle: Thor Agena D. Failure. Thor SLV-2 Agena D 400 / Agena D 1171 KH-4. Mission failed.

• 1963 December 5 21:51 - Transit 5BN-2 Launch Vehicle: Thor Able-Star. Thor Ablestar 385 AB015 Apogee: 1,110 km (680 mi). Transit operational prototype powered by a SNAP-9A nuclear power source. First operational navigation satellite. It was used regularly by both surface and submarine units of the Navy until November 1964. From this point in time the US Navy had continuous use of satellite navigation.

• 1963 December 21 21:45 - KH-4 9062 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 398 / Agena D 1168 Apogee: 337 km (209 mi). KH-4; deployed ELINT subsatellite. Corona static fogged much of film.

• 1964 January 11 - Agena D 2354 Launch Vehicle: Thor Agena D. Thor SLV-2 Agena D 390 / Agena D 2354 Apogee: 937 km (582 mi). Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1964 January 19 10:59 - OPS 3367A Launch Vehicle: Thor Agena D. Thor SLV-2 Agena D 384 / Agena D 2303 Apogee: 810 km (500 mi). Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1964 January 25 13:59 - Echo 2 Launch Vehicle: Thor Agena B. Thor SLV-2 Agena B 397 (TA2) / Agena B 6301 (TA2) Apogee: 1,315 km (817 mi). Passive commsat; balloon; 1st joint US/USSR space mission. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).

• 1964 February 15 21:38 - KH-4A 1004 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 389 / Agena D 1174 Apogee: 429 km (266 mi). KH-4A. Main cameras operated satisfactorily. Minor degradations due to static and light leaks.

• 1964 February 28 03:20 - OPS 3722 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 402 / Agena D 2316 Apogee: 516 km (320 mi).

• 1964 April 21 18:50 - Transit 5BN-3 Launch Vehicle: Thor Able-Star. Failure. Thor Ablestar 379 AB014 Carried SNAP-9A nuclear power source. After this launch failure it was decided that operational Transits would be solar-powered only.

• 1964 April 27 23:23 - KH-4A 1005 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 395 / Agena D 1604 Apogee: 445 km (276 mi). KH-4A. Mission failed. Recovery vehicle impacted in Venezuela.

• 1964 June 13 15:47 - KH-5 9065A Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 408 / Agena D 1606 Apogee: 362 km (224 mi). KH-5; carried Star Flash experiment. Officially: Spacecraft Engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1964 June 18 04:56 - OPS 4467A Launch Vehicle: Thor Agena D. Thor SLV-2 Agena D 407 / Agena D 2304 Apogee: 820 km (500 mi). Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1964 June 19 23:18 - KH-4A 1007 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 410 / Agena D 1609 Apogee: 451 km (280 mi). KH-4A. Out-of-focus area on some film.

• 1964 July 2 23:59 - OPS 3395 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 409 / Agena D 2315 Apogee: 520 km (320 mi).

• 1964 August 5 23:15 - KH-4A 1009 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 413 / Agena D 1605 Apogee: 436 km (270 mi). KH-4A. Cameras operated successfully.

• 1964 August 21 15:45 - KH-5 9066A Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 412 / Agena D 1603 Apogee: 363 km (225 mi). KH-5. 15% of stellar film degraded by flare. Image smearing on leading edge of main camera film. Final ARGON mission. Officially: Spacecraft Engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1964 August 28 07:56 - Nimbus 1 Launch Vehicle: Thor Agena B. Agena-B cut off too early. Partial Failure.. Thor SLV-2 Agena B 399 (TA3) / Agena B 6201 (TA3) Apogee: 937 km (582 mi). Returned 27,000 cloud cover images. The spacecraft carried an advanced vidicon camera system for recording and storing remote cloudcover pictures, an automatic picture transmission camera for providing real-time cloud cover pictures, and a high-resolution infrared radiometer to complement the daytime TV coverage and to measure nighttime radiative temperatures of cloud tops and surface terrain. A short second-stage burn resulted in an unplanned eccentric orbit. Otherwise, the spacecraft and its experiments operated successfully until September 22, 1964. The solar paddles became locked in position, resulting in inadequate electrical power to continue operations.

• 1964 October 5 21:50 - KH-4A 1011 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 421 / Agena D SS-01A 1170 Apogee: 440 km (270 mi). KH-4A. Primary mode of recovery failed on second portion of the mission (1011-2). Small out of focus areas present at random on both cameras.

• 1964 October 6 17:04 - Transit O-1 Launch Vehicle: Thor Able-Star. Thor Ablestar 423 AB016 Apogee: 1,077 km (669 mi). Naval Avionics Facility-assembled production spacecraft. Failed after a few days operation.

• 1964 November 2 21:30 - KH-4A 1013 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 420 / Agena D SS-01A 1173 Apogee: 210 km (130 mi). KH-4A. Program anomaly occurred immediately after launch when both cameras operated for 417 frames. Main cameras ceased operation on rev 52D of first portion of mission negating second portion. About 65% of aft camera film is out of focus.

• 1964 November 4 02:12 - OPS 3062 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 430 / Agena D SS-01A 2317 Apogee: 526 km (326 mi).

• 1964 November 18 20:35 - KH-4A 1014 (ORBIS) Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 416 / Agena D SS-01A 1180 Apogee: 329 km (204 mi). KH-4A. Cameras operated successfully.

• 1964 December 13 00:08 - Transit 5E-5 Launch Vehicle: Thor Able-Star. Thor Ablestar 427 AB017 Apogee: 1,064 km (661 mi). Celestial UV, magnetic field data.

• 1964 December 19 21:10 - KH-4A 1015 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 424 / Agena D SS-01A 1607 Apogee: 405 km (251 mi). KH-4A. Discrepancies in planned and actual coverage due to telemetry problems during the first 6 revolutions. Small out-of-focus areas on film from aft camera.

• 1964 December 21 19:08 - OPS 3762/Agena D 2355 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 425 / Agena D SS-01A 2355 Apogee: 264 km (164 mi). Unknown mission. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1965 January 15 21:00 - KH-4A 1016 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 414 / Agena D SS-01A 1608 Apogee: 420 km (260 mi). KH-4A. Smearing of highly reflective images due to reflections within camera.

• 1965 March 9 18:29 - Solrad 6B Launch Vehicle: Thor Agena D. Thor SLV-2 Agena D 419 / Agena D SS-01A 2701 Apogee: 924 km (574 mi). Identified by McDowell as probable NRL ELINT satellite.

• 1965 March 11 13:39 - Transit-O-3 Launch Vehicle: Thor Able-Star. Thor Ablestar 440 AB018 Apogee: 418 km (259 mi). Naval Avionics Facility-assembled production spacecraft. Failed after a few weeks operation.

• 1965 March 25 21:11 - KH-4A 1018 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 429 / Agena D SS-01B 1612 Apogee: 381 km (236 mi). KH-4A. Cameras operated successfully. First KH-4A reconnaissance system to be launched into a retrograde orbit.

• 1965 May 18 18:02 - KH-4A 1021 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 438 / Agena D SS-01B 1615 Apogee: 399 km (247 mi). KH-4A. Aft camera ceased operation on pass 102.

• 1965 June 9 21:58 - KH-4A 1020 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 444 / Agena D SS-01B 1613 Apogee: 355 km (220 mi). KH-4A. All cameras operated satisfactorily. Erratic attitude caused an early recovery after the second day of 1020-2.

• 1965 June 24 22:35 - Transit O-4 Launch Vehicle: Thor Able-Star. Thor Ablestar 447 AB019 Apogee: 1,125 km (699 mi). Spacecraft built by Naval Avionics Facility, but refurbished by APL. Operated for 7 to 11 months, but then failed due to poor workmanship of NAFI components.

• 1965 July 17 05:55 - OPS 8411 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 422 / Agena D SS-01B 2702 Apogee: 512 km (318 mi).

• 1965 August 13 22:11 - Dodecapole 2 Launch Vehicle: Thor Able-Star. Thor Ablestar 455 AB020 Apogee: 1,051 km (653 mi). Surveillance Calibration; dodecahedron; extended 12 25 ft. antennas. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).

• 1965 September 2 20:00 - Starfish Radiation 2 Launch Vehicle: Thor Agena D. Agena-D failed; destroyed by range safety.. Thor SLV-2 Agena D 401 / Agena D SS-01A 1602 Apogee: 11 km (6 mi). Artificial radiation data.

• 1965 October 5 17:45 - KH-4A 1025 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 433 / Agena D SS-01B 1616 Apogee: 322 km (200 mi). KH-4A. Main cameras operated satisfactorily.

• 1965 October 14 13:11 - OGO 2 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 435 (TA4) / Agena D SS-01B 680 Apogee: 1,515 km (941 mi). OGO 2 was a large observatory instrumented with 20 experiments designed to make simultaneous, correlative observations of aurora and airglow emissions, energetic particles, magnetic field variations, ionospheric properties, etc., especially over the polar areas. Soon after achieving orbit, difficulties in maintaining earth lock with horizon scanners caused exhaustion of attitude control gas by October 23, 1965, 10 days after launch. At this time, the spacecraft entered a spin mode (about 0.11 rpm) with a large coning angle about the previously vertical axis. Five experiments became useless when the satellite went into this spin mode. Six additional experiments were degraded by this loss of attitude control. By April 1966, both batteries had failed, so subsequent observations were limited to sunlit portions of the orbit. By December 1966, only eight experiments were operational, five of which were not degraded by the spin mode operation. By April 1967, the tape recorders had malfunctioned and only one third of the recorded data could be processed. Spacecraft power and periods of operational scheduling conflicts created six large data gaps so that data were observed on a total of about 306 days of the 2-yr, 18-day total span of observed satellite data to November 1, 1967. The spacecraft was shut down on November 1, 1967, with eight experiments still operational. It was reactivated for 2 weeks in February 1968 to operate the rubidium vapor magnetometer experiment.

• 1965 November 29 04:48 - Alouette 2 Launch Vehicle: Thor Agena B. Thor SLV-2A Agena B 453 (TA5) / Agena B S-01 6102 Apogee: 2,666 km (1,656 mi). Ionospheric research; data correlated with Explorer 31. The double-launch project, known as ISIS-X was the first in a new co-operative NASA-Canadian Defense Research Board program for International Satellites for Ionospheric Studies. Alouette was in orbit with an apogee just over a kilometre lower than Explorer 31's and with a perigee of just more than a kilometre higher. The orbits were some 3000 km at apogee and 500 km at perigee.

• 1965 December 9 21:10 - KH-4A 1027 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 448 / Agena D SS-01B 1621 Apogee: 439 km (272 mi). KH-4A. Erratic attitude necessitated recovery after two days of operation. All cameras operated satisfactorily.

• 1965 December 24 21:06 - KH-4A 1028 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 451 / Agena D SS-01B 1610 Apogee: 443 km (275 mi). KH-4A. Cameras operated satisfactorily.

• 1966 February 9 19:45 - OPS 1439 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 428 / Agena D SS-01B 2703 Apogee: 511 km (317 mi).

• 1966 March 9 22:02 - KH-4A 1030 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 452 / Agena D SS-01B 1622 Apogee: 418 km (259 mi). KH-4A. All cameras operated satisfactorily.

• 1966 May 3 19:25 - KH-4A 1032 Launch Vehicle: Thor Agena D. Failure. Thor SLV-2A Agena D 465 / Agena D SS-01B 1625

• 1966 May 15 07:55 - Nimbus 2 Launch Vehicle: Thor Agena B. Thor SLV-2A Agena B 456 (TA6) / Agena B S-01 6202 Apogee: 1,176 km (730 mi). TV, IR cloud cover photos. The spacecraft carried an advanced vidicon camera system for recording and storing remote cloud cover pictures, an automatic picture transmission camera for providing real-time cloudcover pictures, and both high- and medium-resolution infrared radiometers (HRIR and MRIR) for measuring the intensity and distribution of electromagnetic radiation emitted by and reflected from the earth and its atmosphere. The spacecraft and experiments performed normally after launch until July 26, 1966, when the spacecraft tape recorder failed. Its function was taken over by the HRIR tape recorder until November 15, 1966, when it also failed. Some real-time data were collected until January 17, 1969, when the spacecraft mission was terminated owing to deterioration of the horizon scanner used for earth reference.

• 1966 June 21 21:31 - KH-4A 1034 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 466 / Agena D SS-01B 1626 Apogee: 359 km (223 mi). KH-4A. Failure of velocity/altitude programmer produced poor imagery after revolution 5.

• 1966 June 24 00:12 - Pageos 1 Launch Vehicle: Thor Agena D. Thor SLV-2A Agena D 473 (TA7) / Agena D SS-01B 631 Apogee: 4,220 km (2,620 mi). The PAGEOS (Passive Geodetic Earth Orbiting Satellite) spacecraft was a 30.48-m inflatable sphere, and had no instrumentation on board. It was the second (following GEOS 1) NASA satellite in the National Geodetic Satellites Program. The launch, orbit, separation, inflation and initial operation were nominal, with more than 40 ground stations participating in the observation program. The orbit was generally considered too high for drag-density study, although some work was done in this area by the Smithsonian Astrophysical Observatory.