Encyclopedia Astronautica
Thor Agena A



thoraga.jpg
Thor-Agena A
Credit: US Air Force
thaga60m.jpg
Thor Agena A
Thor Agena A - COSPAR 1960-M
thoragea.gif
Thor Agena A
Credit: © Mark Wade
agenaa.jpg
Agena A Stage
Credit: © Mark Wade
thoraged.jpg
Thor-Agena A
Thor Booster with an Agena satellite vehicle as the second stage with the launch name of DISCOVERER XIII. It was successfully launched from Vandenberg AFB on August 10th 1960. The Agena satellite orbited the earth and then was ejected from orbit and retrieved in the Pacific Ocean north of Hawaii the next day August 11, 1960 by a waiting Navy pickup ship.
Credit: Larry Rhoads
thoragec.jpg
Thor-Agena A
Thor Booster with an Agena satellite vehicle as the second stage with the launch name of DISCOVERER XIII. It was successfully launched from Vandenberg AFB on August 10th 1960. The Agena satellite orbited the earth and then was ejected from orbit and retrieved in the Pacific Ocean north of Hawaii the next day August 11, 1960 by a waiting Navy pickup ship.
Credit: Larry Rhoads
thorageb.jpg
Thor-Agena A
Thor booster built by Douglas Aircraft Company with a second stage Agena satellite vehicle built by Lockheed Aircraft Corp. This was a Douglas/Lockheed personnel launch operation from one of the Douglas launch complexes. Early to mid 1959.
Credit: Larry Rhoads
thoragea.gif
Thor Agena A
Credit: © Mark Wade
American orbital launch vehicle. Two stage vehicle consisting of 1 x Thor DM-18A + 1 x Agena A

LEO Payload: 250 kg (550 lb). Failures: 6. First Fail Date: 1959-01-21. Last Fail Date: 1960-06-29 in 1985 dollars. Flyaway Unit Cost $: 10.730 million.

Stage Data - Thor Agena A

  • Stage 1. 1 x Thor DM-19. Gross Mass: 49,340 kg (108,770 lb). Empty Mass: 3,125 kg (6,889 lb). Thrust (vac): 758.711 kN (170,565 lbf). Isp: 282 sec. Burn time: 165 sec. Isp(sl): 248 sec. Diameter: 2.44 m (8.00 ft). Span: 2.44 m (8.00 ft). Length: 18.42 m (60.43 ft). Propellants: Lox/Kerosene. No Engines: 1. Engine: LR-79-7. Status: Out of Production.
  • Stage 2. 1 x Agena A. Gross Mass: 3,790 kg (8,350 lb). Empty Mass: 885 kg (1,951 lb). Thrust (vac): 68.950 kN (15,501 lbf). Isp: 276 sec. Burn time: 120 sec. Isp(sl): 0.0000 sec. Diameter: 1.52 m (4.98 ft). Span: 1.52 m (4.98 ft). Length: 4.73 m (15.51 ft). Propellants: Nitric acid/UDMH. No Engines: 1. Engine: Bell 8048. Other designations: RM-81. Status: Out of Production.

Historical Essay © Andreas Parsch

Lockheed RM-81 Agena

The Agena space vehicle was used in large numbers during the 1960s and 1970s as upper stage with SLV-2 Thor, SLV-3 Atlas and SLV-5 Titan boosters to launch a variety of military and civilian payloads into orbit. The Agena itself was actually the first general-purpose satellite, and formed the core for many operational satellites and experimental space vehicles. It is included in this missile directory, because the U.S. Air Force allocated the formal missile designator RM-81 to the Agena (see section on RM-81 Designation for details).

In 1955, the U.S. Air Force began its Weapons System 117L program, calling for the development of a strategic satellite system. The initial primary goal of WS-117L was the development an orbital photo-reconnaissance platform, and in October 1956, Lockheed became prime contractor for the system. The core element of WS-117L was a new multipurpose spacecraft with boost and manoeuvering engines, which would act as the second stage of the launch vehicle as well as the carrier vehicle for the reconnaissance system. Lockheed's Agena spacecraft was built around the Bell XLR81 liquid-propellant rocket engine, and was initially known informally as Hustler, because the XLR81 was originally developed for a (later cancelled) rocket-powered weapons pod for the B-58 Hustler bomber. The first launch of a Thor-Agena combination in January 1959 was a failure, but on 28 February that year, Agena scored its first success when a Thor-Agena launcher placed the Discoverer 1 satellite into polar orbit.

Agena A

The first few Agenas, including the vehicle used in the Discoverer 1 launch, used a Bell XLR81-BA-3 rocket engine, but most vehicles of the initial Agena A series used an XLR81-BA-5 (Bell Model 8048). The engine had gimballed nozzles for pitch and yaw control, and could deliver a thrust of 68.9 kN (15500 lb) for up to 120 s.

Launch Vehicle Combination Number of Launches First/Last Launch
Thor (SLV-2) + Agena A 16 21-Jan-1959 / 13-Sep-1960
Atlas (LV-3A) + Agena A 4 26-Feb-1960 / 31-Jan-1961
Total for Agena A 20 21-Jan-1959 / 31-Jan-1961

Launch summary for Agena A

The Thor-Agena A launched the initial reconnaissance satellites of the CORONA (publicly named Discoverer) series (KH-1 system), while the Atlas-Agena A was used for the first two launches of both the Midas (Missile Detection And Surveillance) early-warning system and Samos (Satellite and Missile Observation System) ELINT satellite series.

Agena B

The Agena B had an improved XLR81-BA-7 engine (Bell Model 8081), which could be restarted in space, and was stretched to carry much more propellant, doubling the total burn time to 240 s. Both features greatly increased the versatility of the Agena vehicle. When launched into low orbits, the Agena B had plenty of fuel left for extensive orbital manoeuvers, an important requirement for a reconnaissance platform. Later models of the Agena B used a further improved XLR81-BA-9 (Bell Model 8096) engine, which (among other changes) increased the thrust to 71.1 kN (16000 lb) by using a different type of fuel.

Launch Vehicle Combination Number of Launches First/Last Launch
Thor (SLV-2) + Agena B 44* 26-Oct-1960 / 28-Aug-1964
Thrust-Augmented Thor (SLV-2A/C) + Agena B 3* 29-Jun-1963 / 15-May-1966
Atlas (LV-3A) + Agena B 28 12-Jul-1961 / 21-Mar-1965
Atlas (SLV-3) + Agena B 1 9-Jun-1966
Total for Agena B 76 26-Oct-1960 / 9-Jun-1966

Launch summary for Agena B

* Thor variant counts slightly differ between sources, but Thor-Agena total is not in question

Most of the Thor-Agena B vehicles launched KH-series reconnaissance systems (all KH-2/3 CORONAs, and some satellites of the KH-4 CORONA and KH-5 ARGON series). The remainder included e.g. some ELINT systems of the Samos program. The Atlas-Agena B launched a variety of spacecraft, the major ones being Midas early-warning systems, Samos ELINT systems and Ranger space probes.

Agena C

The designation Agena C was reserved for a proposed enlarged variant, which was to have doubled the capability of the Agena B (most likely by doubling the fuel tank size). However, this version was not built.

Agena D

The majority of Agenas were of the final Agena D variant. This was essentially a "standardized" Agena B, which could accept a variety of payloads (in a conical payload section in the nose) and be fitted to Atlas, Thor or Titan launchers without changes to the basic Agena. The earlier Agena A/B vehicles were tailor-made for their respective payloads and launcher types. The Agena D launched a large number of military and scientific payloads, including e.g. the Gemini-Agena target vehicles used by NASA for space capsule docking experiments in 1966.

Launch Vehicle Combination Number of Launches First/Last Launch
Thor (SLV-2) + Agena D 22* 28-Jun-1962 / 31-May-1967
Thrust-Augmented Thor (SLV-2A/C) + Agena D 60* 28-Feb-1963 / 17-Jan-1968
LTTAT** (SLV-2G/H) + Agena D 22* 9-Aug-1966 / 16-Jul-71
Thorad (SLV-2G/H) + Agena D 21* 18-May-1968 / 25-May-72
Atlas (LV-3A) + Agena D 15 12-Jul-1963 / 20-Jul-1965
Atlas (SLV-3) + Agena D 48 14-Aug-1964 / 5-Nov-1967
Atlas (SLV-3A) + Agena D 12 4-Mar-1968 / 7-Apr-1978
Atlas F + Agena D 1 27-Jun-1978
Titan 3B (SLV-5B) 29 29-Jul-1966 / 23-Oct-1970
Titan 23B 2 21-Jan-1971 / 22-Apr-1971
Titan 33B 3 21-Mar-1971 / 21-Aug-1973
Titan 24B 23 12-Aug-1971 / 21-Aug-1973
Titan 34B 11 10-Mar-1975 / 12-Feb-1987
Total for Agena D 269 28-Jun-1962 / 12-Feb-1987

Launch summary for Agena D

* Thor variant counts slightly differ between sources, but Thor-Agena total is not in question
** LTTAT = Long-Tank Thrust-Augmented Thor (quoted by some sources as identical to Thorad)
Titan 3B was the designation for the Titan 3 + Agena D combination
These derivatives of the Titan 3B are sometimes called 3(23)B, 3(33B), 3(24)B and 3(34)B, respectively.

The majority of Agena D missions on Thor-type boosters launched KH-series reconnaissance systems, mostly CORONA (KH-4/4A/4B), but also ARGON (KH-5) and LANYARD (KH-6). Most of the initial Atlas-Agena D vehicles (LV-3A/SLV-3) launched GAMBIT satellites (KH-7 reconnaissance system) into orbit, but payloads also included the Mariner series of interplanetary probes and the GATV (Gemini-Agena Target Vehicle). The SLV-3A/Agena D was used to launch the CANYON and RHYOLITE/AQUACADE series of ELINT/SIGINT satellites into geostationary orbits.

The Titan 3B/23B/24B series launched GAMBIT (KH-8 reconnaissance system) satellites, while the payloads of the larger Titan 33B/34B boosters consisted of JUMPSEAT SIGINT and SDS communications satellites.

A total of 365 Agena vehicles of all types were launched into space by the U.S. Air Force and NASA between January 1959 and 12 February 1987, when the last Agena D was launched with a USAF payload (SDS communications satellite #7) as upper stage of a Titan 34B booster.

RM-81 Designation

In 1958 (or early 1959), the U.S. Air Force allocated the formal "Research Missile" designation RM-81 to the Agena space vehicle. The reasons for this remain unclear, but the USAF possibly needed to assign a designator for formal purposes and there was no better alternative at that time. USAF serial number listings show a total order of 341 Agenas, designated as XRM-81, RM-81, SRM-81 and SRM-81A. Because I cannot connect these four designators in any way to the documented basic Agena variants (Agena A/B/D), I don't know what the significance of the different RM-81 designations is. The table below is a detailed listing of allocated Agena serial number blocks, sorted by type designation:

    Serial Range Designation Total Number Ordered
    59-2544/2557
    60-606/615
    60-5454/5463
    60-6594/6630
    60-6914/6922
    62-12585
    XRM-81 81
    60-3710/3719 RM-81 10
    63-7368/7406
    63-12759/12764
    65-10657/10685
    66-4390/4432
    66-9249/9262
    67-14544/14579
    SRM-81 167
    61-4530/4536
    62-3876/3878
    62-4614/4625
    62-12202/12213
    62-12289/12291
    63-13040/13085
    SRM-81A 83

Notes:
1. The Agena did not receive a new designation in June 1963, when the joint DOD missile designation system was introduced, because spacecraft were not originally part of the new system.
2. One would expect that SRM-81A designated a newer version than SRM-81 (before 1962, an "A" suffix designated the second version), but the latest blocks are all attributed to plain SRM-81. However, after June 1963 the Agena's designation was no longer covered by any official regulation, so it's possible that the general SRM-81 designator was not meant to designate any specific variant, but was only retained in the serial number list for informal purposes.
3. The 341 serials do not account for the full number of Agenas built (at least 365).

Specifications

Note: Data given by several sources show slight variations. Figures given below may therefore be inaccurate! Because exact numbers for each Agena depend on payload configuration, the data are to be regarded as "typical" values.

Data for Agena A, Agena B, Agena D:

  Agena A Agena B/D
Length 5.94 m (19.5 ft) 7.56 m (24.8 ft)
Diameter 1.52 m (5 ft)
Weight 3850 kg (8500 lb)
Fuel: 2945 kg (6500 lb)
7160 kg (15800 lb)
Fuel: 6115 kg (13500 lb)
Propulsion Bell XLR81-BA-5 liquid-fuel rocket;
68.9 kN (15500 lb) for 120 s
Bell XLR81-BA-9 liquid-fuel rocket;
71.1 kN (16000 lb) for 240 s
Main Sources

[1] Jos Heyman: "World Spacecraft Digest 1957-2002", Tiros Space Information, 2003
[2] Jos Heyman: "Spacecraft Tables 1957-2002", Tiros Space Information, 2003
[3] Ren J. Francillon: "Lockheed Aircraft since 1913", Putnam, 1987
[4] Norman J. Bowman: "The Handbook of Rockets and Guided Missiles", Perastadion Press, 1963
[5] Mark Wade: Encyclopedia Astronautica
[6] Gunter Krebs: Gunter's Space Page
[7] USAF Aircraft Serial Number Records (data provided by Jos Heyman)


AKA: SLV-2.
Status: Retired 1960.
Gross mass: 53,130 kg (117,130 lb).
Payload: 250 kg (550 lb).
Height: 28.00 m (91.00 ft).
Diameter: 2.44 m (8.00 ft).
Thrust: 667.20 kN (149,993 lbf).
Apogee: 1,000 km (600 mi).
First Launch: 1959.01.21.
Last Launch: 1960.09.13.
Number: 16 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • KH-1 American military surveillance satellite. 22 launches, 1959.01.21 (Thor Agena test) to 1960.09.13 (Discoverer 15). First US film reconnaissance satellite, and first polar orbiting satellite. More...

Associated Engines
  • Bell 8048 Bell Nitric acid/UDMH rocket engine. 68.9 kN. Out of production. Isp=276s. Used on Agena A, derived from Rascal engine. Regeneratively cooled; used drilled holes to create the same effect as more costly stacked spaghetti rubes. First flight 1959. More...
  • LR79-7 Rocketdyne Lox/Kerosene rocket engine. 758.7 kN. Out of production. Designed for booster applications. Gas generator, pump-fed. Isp=282s. First flight 1957. More...

See also
  • Delta The Delta launch vehicle was America's longest-lived, most reliable, and lowest-cost space launch vehicle. Development began in 1955 and it continued in service in the 21st Century despite numerous candidate replacements. More...

Associated Manufacturers and Agencies
  • Douglas American manufacturer of rockets, spacecraft, and rocket engines. Boeing Huntington Beach, Huntington Beach, CA, USA. More...

Associated Launch Sites
  • Vandenberg Vandenberg Air Force Base is located on the Central Coast of California about 240 km northwest of Los Angeles. It is used for launches of unmanned government and commercial satellites into polar orbit and intercontinental ballistic missile test launches toward the Kwajalein Atoll. More...
  • Vandenberg SLC1E Delta launch complex. Originally a Thor 75 SMS launch pad. Upgraded to a space launch complex in 1967. More...
  • Vandenberg SLC1W Delta launch complex. Originally a Thor 75 SMS launch pad. Upgraded to a space launch complex in 1966. More...

Associated Stages
  • Agena A Nitric acid/UDMH propellant rocket stage. Loaded/empty mass 3,790/885 kg. Thrust 68.95 kN. Vacuum specific impulse 276 seconds. The Agena space vehicle was used in large numbers during the 1960s and 1970s as upper stage with SLV-2 Thor, SLV-3 Atlas and SLV-5 Titan boosters to launch a variety of military and civilian payloads into orbit. The Agena itself was actually the first general-purpose satellite, and formed the core for many operational satellites and experimental space vehicles. More...
  • Thor DM-19 Lox/Kerosene propellant rocket stage. Loaded/empty mass 49,340/3,125 kg. Thrust 758.71 kN. Vacuum specific impulse 282 seconds. More...

Thor Agena A Chronology


1959 January 21 - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1W. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 160. FAILURE: Launch vehicle failure.. Failed Stage: U.
  • Thor Agena test - . Nation: USA. Agency: USAF. Spacecraft: KH-1. COSPAR: F590121A. Summary: First flight test of Thor-Agena for KH program..

1959 February 28 - . 21:49 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1W. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 163 / Agena A 1022.
  • Discoverer 1 - . Payload: KH-1 prototype / Agena A 1022. Mass: 618 kg (1,362 lb). Nation: USA. Agency: DARPA. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1959-03-03 . USAF Sat Cat: 13 . COSPAR: 1959-Beta-1. Apogee: 968 km (601 mi). Perigee: 163 km (101 mi). Inclination: 89.7000 deg. Period: 96.00 min. Summary: First polar orbiting satellite; KH-1 prototype; did not carry camera or film capsule..

1959 April 13 - . 21:18 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1W. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 170 / Agena A 1018.
  • Discoverer 2 - . Payload: KH-1 prototype / Agena A 1022. Mass: 743 kg (1,638 lb). Nation: USA. Agency: DARPA. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1959-04-26 . USAF Sat Cat: 14 . COSPAR: 1959-Gamma-1. Apogee: 346 km (214 mi). Perigee: 239 km (148 mi). Inclination: 89.9000 deg. Period: 90.40 min. 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 didnt 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 June 3 - . 20:09 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1W. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 174 / Agena A 1020. FAILURE: No telemetry after Agena ignition.. Failed Stage: 2.
  • Discoverer 3 - . Payload: KH-1 prototype / Agena A 1018. Mass: 753 kg (1,660 lb). Nation: USA. Agency: DARPA. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1959-06-03 . COSPAR: F590603A. Summary: KH-1 prototype; did not carry camera; film capsule recovery failed..
  • SRV - . Nation: USA. Agency: USAF. Spacecraft: KH-1. COSPAR: F590603B.

1959 June 25 - . 22:47 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1E. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 179 / Agena A 1023. FAILURE: Insufficient stage 2 velocity.. Failed Stage: 2.
  • Discoverer 4 - . Payload: KH-1 9001. Mass: 743 kg (1,638 lb). Nation: USA. Agency: DARPA. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1959-06-25 . COSPAR: F590625A. Summary: KH-1; 1st generation low resolution photo surveillance. Failed to achieve orbit..
  • SRV 102 - . Nation: USA. Agency: USAF. Spacecraft: KH-1. COSPAR: F590625B.

1959 August 13 - . 19:00 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1W. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 192 / Agena A 1029.
  • Discoverer 5 - . Payload: KH-1 9002 / Agena A 1029. Mass: 781 kg (1,721 lb). Nation: USA. Agency: DARPA. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1959-09-28 . USAF Sat Cat: 18 . COSPAR: 1959-Epsilon-1. Apogee: 731 km (454 mi). Perigee: 214 km (132 mi). Inclination: 79.9000 deg. Period: 94.10 min. Summary: 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..
  • Discoverer 5 Capsule - . Payload: KH-1 9002 Capsule. Nation: USA. Agency: USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1961-02-11 . USAF Sat Cat: 26 . COSPAR: 1959-Epsilon-2. Apogee: 1,700 km (1,000 mi). Perigee: 218 km (135 mi). Inclination: 78.9000 deg. Period: 104.30 min. Summary: 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 19 - . 19:24 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1E. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 200 / Agena A 1028.
  • Discoverer 6 - . Payload: KH-1 9003 / Agena A 1028. Mass: 783 kg (1,726 lb). Nation: USA. Agency: DARPA. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1959-10-20 . USAF Sat Cat: 19 . COSPAR: 1959-Zeta-1. Apogee: 846 km (525 mi). Perigee: 207 km (128 mi). Inclination: 83.9000 deg. Period: 95.10 min. Summary: KH-1; 1st generation low resolution photo surveillance; film capsule recovery failed. Mission failed. Retro rockets malfunctioned negating recovery..

1959 November 7 - . 20:28 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1W. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 206 / Agena A 1051.
  • Discoverer 7 - . Payload: KH-1 9004 / Agena A 1051. Mass: 794 kg (1,750 lb). Nation: USA. Agency: DARPA. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1959-11-26 . USAF Sat Cat: 24 . COSPAR: 1959-Kappa-1. Apogee: 820 km (500 mi). Perigee: 158 km (98 mi). Inclination: 81.6000 deg. Period: 94.40 min. Summary: KH-1; 1st generation low resolution photo surveillance; satellite tumbled; film capsule not recovered. Mission failed. Failed to achieve orbit..

1959 November 20 - . 19:25 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1E. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 212 / Agena A 1050.
  • Discoverer 8 - . Payload: KH-1 9005 / Agena A 1050. Mass: 795 kg (1,752 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1960-03-08 . USAF Sat Cat: 25 . COSPAR: 1959-Lambda-1. Apogee: 1,661 km (1,032 mi). Perigee: 186 km (115 mi). Inclination: 80.5000 deg. Period: 103.50 min. Summary: KH-1; 1st generation low resolution photo surveillance; film capsule recovery failed. Mission failed. Eccentric orbit negating recovery..

1960 February 4 - . 18:51 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1W. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 218 / Agena A 1052. FAILURE: Failure. Failed Stage: U.
  • Discoverer 9 - . Payload: KH-1 9006. Mass: 765 kg (1,686 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1960-02-04 . COSPAR: F600204A. Summary: KH-1; 1st generation low resolution photo surveillance. Mission failed..
  • SRV 113 - . Nation: USA. Agency: USAF. Spacecraft: KH-1. COSPAR: F600204B.

1960 February 19 - . 20:15 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1E. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 223 / Agena A 1054. FAILURE: Failure. Failed Stage: U.
  • Discoverer 10 - . Payload: KH-1 9007. Mass: 765 kg (1,686 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1960-02-19 . COSPAR: F600219A. Summary: KH-1; Mission failed..
  • SRV 110 - . Nation: USA. Agency: USAF. Spacecraft: KH-1. COSPAR: F600219B.

1960 April 15 - . 20:30 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1E. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 234 / Agena A 1055.
  • Discoverer 11 - . Payload: KH-1 9008 / Agena A 1055. Mass: 790 kg (1,740 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1960-04-26 . USAF Sat Cat: 32 . COSPAR: 1960-Delta-1. Apogee: 603 km (374 mi). Perigee: 166 km (103 mi). Inclination: 80.4000 deg. Period: 92.20 min. Summary: KH-1; film capsule recovery failed. Mission failed. Attitude control system malfunctioned..

1960 June 29 - . 22:00 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1W. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 160 / Agena A 1053. FAILURE: Failure. Failed Stage: U.
  • Discoverer 12 - . Payload: KH-1 prototype. Mass: 790 kg (1,740 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1960-06-29 . COSPAR: F600629A. Summary: KH-1 prototype; designed to test capsule recovery system; did not carry camera..
  • SRV - . Nation: USA. Agency: USAF. Spacecraft: KH-1. COSPAR: F600629B.

1960 August 10 - . 20:37 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1E. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 231 / Agena A 1057.
  • Discoverer 13 - . Payload: KH-1 prototype / Agena A 1057. Mass: 850 kg (1,870 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1960-11-14 . USAF Sat Cat: 48 . COSPAR: 1960-Theta-1. Apogee: 683 km (424 mi). Perigee: 258 km (160 mi). Inclination: 82.8000 deg. Period: 94.00 min. Summary: KH-1 prototype; designed to test capsule recovery system; did not carry camera; capsule successfully recovered from ocean..

1960 August 18 - . 19:57 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1W. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 237 / Agena A 1056.
  • Discoverer 14 - . Payload: KH-1 9009 / Agena A 1056. Mass: 850 kg (1,870 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1960-09-16 . USAF Sat Cat: 54 . COSPAR: 1960-Kappa-1. Apogee: 803 km (498 mi). Perigee: 177 km (109 mi). Inclination: 79.6000 deg. Period: 94.40 min. Summary: KH-1; film capsule recovered 1.2 days later; 1st successful photosurveillance mission. First successful mission. Cameras operated satisfactorily..

1960 September 13 - . 22:14 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC1E. LV Family: Delta. Launch Vehicle: Thor Agena A. LV Configuration: Thor Agena A 246 / Agena A 1058.
  • Discoverer 15 - . Payload: KH-1 9010 / Agena A 1058. Mass: 863 kg (1,902 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-1. Decay Date: 1960-10-18 . USAF Sat Cat: 57 . COSPAR: 1960-Mu-1. Apogee: 755 km (469 mi). Perigee: 200 km (120 mi). Inclination: 80.9000 deg. Period: 94.10 min. Summary: KH-1; film capsule lost at sea. Mission failed. Attained orbit successfully. Capsule sank prior to retrieval..

Home - Browse - Contact
© / Conditions for Use