Encyclopedia Astronautica
DSCS


Defense Satellite Communications System.

More... - Chronology...


Associated Countries
Associated Spacecraft
  • DSCS II American military communications satellite. 15 launches, 1971.11.03 (DSCS II-01) to 1982.10.30 (DSCS II-15). DSCS provided secure voice and data communications for the US military. More...
  • DSCS III American military communications satellite. 15 launches, 1982.10.30 (DSCS III-01) to 2003.08.29 (USA 170). DSCS satellites provided secure voice and data communications for the US military. More...

See also
Associated Launch Vehicles
  • Titan 3C American orbital launch vehicle. Titan 3A with five segment solid motors. Man-rated design originally developed for Dynasoar spaceplane. More...
  • Shuttle American winged orbital launch vehicle. The manned reusable space system which was designed to slash the cost of space transport and replace all expendable launch vehicles. It did neither, but did keep NASA in the manned space flight business for 30 years. Redesign of the shuttle with reliability in mind after the Challenger disaster reduced maximum payload to low earth orbit from 27,850 kg to 24,400 kg. More...
  • Atlas II American orbital launch vehicle. The Atlas II booster was 2.7-meters longer than an Atlas I and included uprated Rocketdyne MA-5A engines. The Atlas I vernier engines were replaced with a hydrazine roll control system. The Centaur stage was stretched 0.9-meters compared to the Centaur I stage. Fixed foam insulation replaced Atlas I's jettisonable insulation panels. The original Atlas II model was developed to support the United States Air Force Medium Launch Vehicle II program. Its Centaur used RL10A-3-3A engines operating at an increased mixture ratio. The first Atlas II flew on 7 December 1991, successfully delivering AC-102/Eutelsat II F3 to orbit. More...
  • Atlas IIA American orbital launch vehicle. Atlas IIA was a commercial derivative of the Atlas II developed for the US Air Force. Higher performance RL10A-4 (or RL10A-4-1) engines replaced Atlas II's RL10A-3-3A engines. More...
  • Delta IV Medium American orbital launch vehicle. Basic Delta-4 vehicle with no strap-ons, the core vehicle, and RL10B-1 upper stage with a 4 m diameter payload fairing. World's first all-cryogenic launch vehicle. More...

Associated Manufacturers and Agencies
  • USAF American agency overseeing development of rockets and spacecraft. United States Air Force, USA. More...

Associated Launch Sites
  • Cape Canaveral America's largest launch center, used for all manned launches. Today only six of the 40 launch complexes built here remain in use. Located at or near Cape Canaveral are the Kennedy Space Center on Merritt Island, used by NASA for Saturn V and Space Shuttle launches; Patrick AFB on Cape Canaveral itself, operated the US Department of Defense and handling most other launches; the commercial Spaceport Florida; the air-launched launch vehicle and missile Drop Zone off Mayport, Florida, located at 29.00 N 79.00 W, and an offshore submarine-launched ballistic missile launch area. All of these take advantage of the extensive down-range tracking facilities that once extended from the Cape, through the Caribbean, South Atlantic, and to South Africa and the Indian Ocean. More...

DSCS Chronology


1971 November 3 - . 03:09 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan 3C. LV Configuration: Titan IIIC 23C-3 (3C-21).
  • DSCS II-01 - . Payload: DSCS II F-1 / OPS 9431. Mass: 520 kg (1,140 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Completed Operations Date: 1979-05-01 . USAF Sat Cat: 5587 . COSPAR: 1971-095A. Apogee: 35,815 km (22,254 mi). Perigee: 35,765 km (22,223 mi). Inclination: 13.8000 deg. Period: 1,436.30 min. Defense Satellite Communications System. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). Positioned in geosynchronous orbit over the Americas at 106 deg W in 1972-?; over the Americas at 81 deg W in 1977-1979; over the Americas at 100-110 deg W in drift 1979-1998 As of 1 September 2001 located at 103.05 deg W drifting at 0.044 deg W per day. As of 2007 Mar 9 located at 110.10W drifting at 0.035W degrees per day.
  • DSCS II-02 - . Payload: DSCS II F-2 / OPS 9432. Mass: 520 kg (1,140 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Completed Operations Date: 1972-01-01 . USAF Sat Cat: 5588 . COSPAR: 1971-095B. Apogee: 35,824 km (22,259 mi). Perigee: 35,819 km (22,256 mi). Inclination: 13.6000 deg. Period: 1,437.90 min. Defense Satellite Communications System. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). Positioned in geosynchronous orbit over the Americas at 112 deg W in 1972. As of 30 August 2001 located at 146.34 deg E drifting at 0.101 deg W per day. As of 2007 Mar 5 located at 36.33W drifting at 0.201E degrees per day.

1973 December 13 - . 23:57 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan 3C. LV Configuration: Titan IIIC 23C-8 (3C-26).
  • DSCS II-03 - . Payload: DSCS II F-3 / OPS 9433. Mass: 566 kg (1,247 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Completed Operations Date: 1982-08-01 . USAF Sat Cat: 6973 . COSPAR: 1973-100A. Apogee: 36,661 km (22,780 mi). Perigee: 36,413 km (22,625 mi). Inclination: 13.9000 deg. Period: 1,474.60 min. Defense Satellite Communications System; 13 deg W. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit over the Atlantic Ocean at 13 deg W in 1974-1977; over the Atlantic Ocean 57-66 deg W in 1977-1979 As of 3 September 2001 located at 104.01 deg E drifting at 9.429 deg W per day. As of 2007 Mar 9 located at 148.24W drifting at 9.427W degrees per day.
  • DSCS II-04 - . Payload: DSCS II F-4 / OPS 9434. Mass: 566 kg (1,247 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Completed Operations Date: 1993-12-20 . USAF Sat Cat: 6974 . COSPAR: 1973-100B. Apogee: 36,837 km (22,889 mi). Perigee: 36,300 km (22,500 mi). Inclination: 13.5000 deg. Period: 1,476.30 min. Defense Satellite Communications System; 175 deg E. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit over the Pacific Ocean at 175 deg E in 1974-1977; over the Indian Ocean 65 deg E in 1977-1980; over the Indian Ocean 60-61 deg E in 1980-1984; over the Indian Ocean 66 deg E in 1984-1987; over the Americas at 56-62 deg W in 1989-1993 As of 5 September 2001 located at 138.02 deg W drifting at 9.919 deg W per day. As of 2007 Mar 3 located at 146.85E drifting at 9.914W degrees per day.

1975 May 20 - . 14:03 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan 3C. LV Configuration: Titan IIIC 23C-7 (3C-25). FAILURE: Transtage gyro platform lost power; attitude control lost; orbit too low.. Failed Stage: G.
  • DSCS II-05 - . Payload: DSCS II F-5 / OPS 9435. Mass: 566 kg (1,247 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Decay Date: 1975-05-26 . USAF Sat Cat: 7807 . COSPAR: 1975-040A. Apogee: 256 km (159 mi). Perigee: 160 km (90 mi). Inclination: 28.6000 deg. Period: 88.60 min. Summary: Unusable orbit. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A)..
  • DSCS II-06 - . Payload: DSCS II F-6 / OPS 9436. Mass: 566 kg (1,247 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Decay Date: 1975-05-26 . USAF Sat Cat: 7808 . COSPAR: 1975-040B. Apogee: 256 km (159 mi). Perigee: 160 km (90 mi). Inclination: 28.6000 deg. Period: 88.60 min. Summary: Unusable orbit. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A)..

1977 May 12 - . 14:26 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan 3C. LV Configuration: Titan IIIC 23C-14 (3C-32).
  • DSCS II-07 - . Payload: DSCS II F-7 / OPS 9437. Mass: 565 kg (1,245 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Completed Operations Date: 1981-12-20 . USAF Sat Cat: 10000 . COSPAR: 1977-034A. Apogee: 36,894 km (22,924 mi). Perigee: 36,759 km (22,840 mi). Inclination: 15.8000 deg. Period: 1,489.60 min. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit over the Atlantic Ocean at 12 deg W in 1977-1979; over the Atlantic Ocean 5 deg W in 1979; over the Pacific Ocean 140 deg E in 1980-1981 As of 28 August 2001 located at 152.07 deg W drifting at 12.959 deg W per day. As of 2007 Mar 10 located at 47.37W drifting at 12.959W degrees per day.
  • DSCS II-08 - . Payload: DSCS II F-8 / OPS 9438. Mass: 565 kg (1,245 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Completed Operations Date: 1990-02-01 . USAF Sat Cat: 10001 . COSPAR: 1977-034B. Apogee: 37,343 km (23,203 mi). Perigee: 37,061 km (23,028 mi). Inclination: 15.5000 deg. Period: 1,509.00 min. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit over the Pacific Ocean at 175 deg E in 1977-1979 over the Atlantic Ocean 12 deg W in 1979-80 over the Pacific Ocean 175 deg E in 1980-1983 over the Pacific Ocean180 deg E in 1983-1986 over the Atlantic Ocean 1 deg W in 1986-1989 As of 3 September 2001 located at 143.55 deg W drifting at 17.451 deg W per day. As of 2007 Mar 9 located at 13.13E drifting at 17.445W degrees per day.

1978 March 25 - . 18:09 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan 3C. LV Configuration: Titan IIIC 23C-17 (3C-35). FAILURE: Second stage hydraulic pump failure.. Failed Stage: 2.
  • DSCS II-09 - . Payload: DSCS II F-9. Mass: 550 kg (1,210 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Decay Date: 1978-03-25 . COSPAR: F780325A. Summary: Launched with DSCS F10..
  • DSCS II F-10 - . Payload: DSCS II F-10. Nation: USA. Agency: USAF AFSC. Program: DSCS. Spacecraft: DSCS II. COSPAR: F780325B.

1978 December 14 - . 00:43 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan 3C. LV Configuration: Titan IIIC 23C-18 (3C-36).
  • DSCS II-11 - . Payload: DSCS II F-11 / OPS 9441. Mass: 550 kg (1,210 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Completed Operations Date: 1993-12-13 . USAF Sat Cat: 11144 . COSPAR: 1978-113A. Apogee: 37,749 km (23,456 mi). Perigee: 37,515 km (23,310 mi). Inclination: 9.8000 deg. Period: 1,531.40 min. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit over the Pacific Ocean at 135 deg W in 1979-1983 over the Pacific Ocean 129 deg W in 1983-1989 As of 5 September 2001 located at 62.62 deg W drifting at 22.467 deg W per day. As of 2007 Mar 10 located at 96.59E drifting at 22.469W degrees per day.
  • DSCS II-12 - . Payload: DSCS II F-12 / OPS 9442. Mass: 550 kg (1,210 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Completed Operations Date: 1993-12-13 . USAF Sat Cat: 11145 . COSPAR: 1978-113B. Apogee: 36,332 km (22,575 mi). Perigee: 36,283 km (22,545 mi). Inclination: 9.8000 deg. Period: 1,462.80 min. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit over the Pacific Ocean at 175 deg E in 1979-1981 over the Indian Ocean 66 deg E in 1981-1983 over the Indian Ocean 60 deg E in 1983-1987 over the Pacific Ocean177 deg E in 1988-1989 over the Indian Ocean 71 deg E in 1990-1992 As of 1 September 2001 located at 93.28 deg E drifting at 6.600 deg W per day. As of 2007 Mar 8 located at 143.60E drifting at 6.589W degrees per day.

1979 November 21 - . 21:36 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan 3C. LV Configuration: Titan IIIC 23C-19 (3C-37).
  • DSCS II-13 - . Payload: DSCS II F-13 / OPS 9443. Mass: 611 kg (1,347 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Completed Operations Date: 1994-07-19 . USAF Sat Cat: 11621 . COSPAR: 1979-098A. Apogee: 37,195 km (23,111 mi). Perigee: 37,104 km (23,055 mi). Inclination: 13.6000 deg. Period: 1,506.30 min. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit at 12 deg W in 1980-1981; 131 deg W in 1981-1983; 179 deg W in 1983; 175 deg E in 1983-1989;179 deg W in 1989-1993 As of 3 September 2001 located at 21.08 deg E drifting at 16.828 deg W per day. As of 2007 Mar 10 located at 37.50W drifting at 16.828W degrees per day.
  • DSCS II-14 - . Payload: DSCS II F-14 / OPS 9444. Mass: 611 kg (1,347 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Completed Operations Date: 1995-06-19 . USAF Sat Cat: 11622 . COSPAR: 1979-098B. Apogee: 36,351 km (22,587 mi). Perigee: 36,316 km (22,565 mi). Inclination: 13.3000 deg. Period: 1,464.10 min. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit at 66 deg E in 1980-1981; 12 deg W in 1981-1986; 179 deg W in 1986-1990; 174 deg E in 1990; 65 deg E in 1991-1994 As of 31 August 2001 located at 27.01 deg W drifting at 6.916 deg W per day. As of 2007 Mar 11 located at 50.79E drifting at 6.926W degrees per day.

1982 October 30 - . 04:05 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan 34D/IUS. LV Configuration: Titan 34D/IUS 34D-1 (04D-5?).
  • DSCS II-15 - . Payload: DSCS II F-15. Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Completed Operations Date: 1997-05-23 . USAF Sat Cat: 13636 . COSPAR: 1982-106A. Apogee: 37,332 km (23,196 mi). Perigee: 37,277 km (23,162 mi). Inclination: 11.3000 deg. Period: 1,514.40 min. Positioned in geosynchronous orbit at 15 deg W in 1983-1987; 66 deg E in 1987; 60 deg E in 1987-1994; 65 deg E in 1994-1997 As of 5 September 2001 located at 114.00 deg W drifting at 18.661 deg W per day. As of 2007 Mar 9 located at 172.94E drifting at 18.658W degrees per day. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).
  • DSCS III-01 - . Payload: DSCS III F-1. Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 13637 . COSPAR: 1982-106B. Apogee: 36,171 km (22,475 mi). Perigee: 36,132 km (22,451 mi). Inclination: 8.8000 deg. Period: 1,454.80 min. Summary: Positioned in geosynchronous orbit at 105 deg W in 1982-1983; 135 deg W in 1983-1989; 130 deg W in 1989-1999. As of 2006 Sep 9 located at 94.39E drifting at 5.469W degrees per day..

1985 October 3 - . 15:15 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39A. LV Family: Shuttle. Launch Vehicle: Shuttle. LV Configuration: Space Shuttle 51-J.
  • USA 12 - . Payload: DSCS III F-3. Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 16117 . COSPAR: 1985-092C. Apogee: 35,963 km (22,346 mi). Perigee: 35,633 km (22,141 mi). Inclination: 0.3000 deg. Period: 1,436.00 min. Released from STS 51J 4 October 1985; boosted into orbit with DSCS 3 F3 on single IUS booster. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit; at 180 deg E in 1994.
  • USA 11 - . Payload: DSCS III F-2. Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 16116 . COSPAR: 1985-092B. Apogee: 35,963 km (22,346 mi). Perigee: 35,434 km (22,017 mi). Inclination: 0.3000 deg. Period: 1,436.00 min. Summary: Released from STS 51J 10/4/85. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit; at 12 deg W in 1986; 42 deg W in 1995..

1989 September 4 - . 05:54 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan 34D/Transtage. LV Configuration: Titan 34D/Transtage 34D-2 (05D-7).
  • USA 43 - . Payload: DSCS II F-16. Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 20202 . COSPAR: 1989-069A. Apogee: 35,799 km (22,244 mi). Perigee: 35,777 km (22,230 mi). Inclination: 6.1000 deg. Period: 1,436.10 min. Summary: Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit; at 57 deg E in 1995..
  • USA 44 - . Payload: DSCS III F-4. Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 20203 . COSPAR: 1989-069B. Apogee: 35,808 km (22,250 mi). Perigee: 35,771 km (22,227 mi). Inclination: 5.0000 deg. Period: 1,436.30 min. Summary: Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit; at 60 deg E in 1995..

1992 February 11 - . 00:41 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36A. LV Family: Atlas. Launch Vehicle: Atlas II. LV Configuration: Atlas II AC-101 / Centaur II 8101.
  • USA 78 - . Payload: DSCS III B-14. Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 21873 . COSPAR: 1992-006A. Apogee: 35,503 km (22,060 mi). Perigee: 30,675 km (19,060 mi). Inclination: 0.9000 deg. Period: 1,300.50 min. Summary: Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). Launch vehicle put payload into geosynchronous transfer orbit with GCS trajectory option. Positioned in geosynchronous orbit; at 135 deg W in 1995..

1992 July 2 - . 21:54 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36A. LV Family: Atlas. Launch Vehicle: Atlas II. LV Configuration: Atlas II AC-103 / Centaur II 8103.
  • USA 82 - . Payload: DSCS III B-12. Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 22009 . COSPAR: 1992-037A. Apogee: 35,800 km (22,200 mi). Perigee: 35,775 km (22,229 mi). Inclination: 0.2000 deg. Period: 1,436.20 min. Launch vehicle put payload into geosynchronous transfer orbit with GCS trajectory option. Positioned in geosynchronous orbit at 12 deg W in 1995-1996. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).

1993 July 19 - . 22:04 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36A. LV Family: Atlas. Launch Vehicle: Atlas II. LV Configuration: Atlas II AC-104 / Centaur II 8104.
  • USA 93 - . Payload: DSCS III B-9. Mass: 2,615 kg (5,765 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 22719 . COSPAR: 1993-046A. Apogee: 35,764 km (22,222 mi). Perigee: 183 km (113 mi). Inclination: 26.1000 deg. Period: 625.80 min. 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 with GCS trajectory option. Positioned in geosynchronous orbit at 175 deg E in 1995-1997.

1993 November 28 - . 23:40 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36A. LV Family: Atlas. Launch Vehicle: Atlas II. LV Configuration: Atlas II AC-106 / Centaur II 8106.
  • USA 97 - . Payload: DSCS III B-10. Mass: 2,615 kg (5,765 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 22915 . COSPAR: 1993-074A. Apogee: 35,501 km (22,059 mi). Perigee: 195 km (121 mi). Inclination: 26.4000 deg. Period: 625.40 min. Launch vehicle put payload into geosynchronous transfer orbit with GCS trajectory option. Positioned in geosynchronous orbit at 52 deg W in 1995; 60 deg E in 1997. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).

1995 July 31 - . 23:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36A. LV Family: Atlas. Launch Vehicle: Atlas IIA. LV Configuration: Atlas IIA AC-118.
  • USA 113 - . Payload: DSCS III B-7. Mass: 2,610 kg (5,750 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 23628 . COSPAR: 1995-038A. Apogee: 35,787 km (22,236 mi). Perigee: 35,787 km (22,236 mi). Inclination: 0.0000 deg. Summary: Positioned in geosynchronous orbit; located at 53 deg W in 1997..

1997 October 25 - . 00:46 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36A. LV Family: Atlas. Launch Vehicle: Atlas IIA. LV Configuration: Atlas IIA AC-131.
  • USA 135 - . Payload: DSCS III B-13. Nation: USA. Agency: USAF. Manufacturer: Valley Forge. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 25019 . COSPAR: 1997-065A. Apogee: 35,800 km (22,200 mi). Perigee: 35,770 km (22,220 mi). Inclination: 0.0000 deg. Summary: Geosynchronous. Launch vehicle put payload into geosynchronous transfer orbit with GCS trajectory option..

2000 January 21 - . 01:03 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36A. Launch Pad: SLC36A. LV Family: Atlas. Launch Vehicle: Atlas IIA. LV Configuration: Atlas IIA AC-138.
  • USA 148 - . Payload: DSCS III B-8. Mass: 1,232 kg (2,716 lb). Nation: USA. Agency: USAF. Manufacturer: Valley Forge. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 26052 . COSPAR: 2000-001A. Apogee: 35,790 km (22,230 mi). Perigee: 35,780 km (22,230 mi). Inclination: 0.0000 deg. Summary: Part of the US Air Force Defense Satellite Communications System. To be stationed in geosynchronous orbit over the Pacific Ocean..

2000 October 20 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36A. Launch Pad: SLC36A. LV Family: Atlas. Launch Vehicle: Atlas IIA. LV Configuration: Atlas IIA AC-140 MLV-9.
  • USA 153 - . Payload: DSCS III B-11. Mass: 1,235 kg (2,722 lb). Nation: USA. Agency: USAF. Manufacturer: Valley Forge. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 26575 . COSPAR: 2000-065A. Apogee: 35,790 km (22,230 mi). Perigee: 35,780 km (22,230 mi). Inclination: 0.0000 deg. Military Communications satellite. Launch delayed from October 12 by spacecraft problem. The US Air Force Defense Satellite Communications System satellite was placed by the Centaur upper stage into a 148 km x 898 km x 29.3 deg parking orbit. A second burn put it into a 218 km x 35,232 km x 26.0 deg transfer orbit. The DSCS III B-11 IABS-8 apogee stage, with two Primex R4D liquid apogee engines, circularised the orbit at geostationary altitude on October 21 and then separated from the DSCS.

2003 March 11 - . 00:59 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC37B. Launch Pad: SLC37B. LV Family: Delta IV. Launch Vehicle: Delta IV Medium. LV Configuration: Delta 4M D4-2 (296) 4040.
  • USA 167 - . Payload: DSCS III A-3. Mass: 1,235 kg (2,722 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS III. USAF Sat Cat: 27691 . COSPAR: 2003-008A. Summary: First flight of a fully cryogenic orbital launch vehicle. Delayed from December 2001, February 2, 6, 8, 11, 12 and March 8 2003. Satellite mas 2,733 kg with kick stage..

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