Encyclopedia Astronautica
JCSAT


Japanese domestic communications satellite network.

More... - Chronology...


Associated Countries
Associated Spacecraft
  • HS 393 American communications satellite. 7 launches, 1989.03.06 (JCSAT 1) to 1991.10.29 (Intelsat 6A F-1). Domestic communication. Launching states: Japan, France, USA. At the time, these were the largest commercial spacecraft ever built. More...
  • HS 601 American communications satellite bus. First launch 1990.01.09. 3-axis unified ARC 22 N and one Marquardt 490 N bipropellant thrusters, Sun and Barnes Earth sensors and two 61 Nms 2-axis gimbaled momentum bias wheels. More...

Associated Launch Vehicles
  • Ariane 44LP French orbital launch vehicle. Ariane 4 with 2 liquid rocket + 2 solid rocket strap-ons. More...
  • Ariane 44L French orbital launch vehicle. Ariane 4 with 4 liquid rocket strap-ons. More...
  • Commercial Titan 3 American orbital launch vehicle. Commercial version of Titan 34D military booster. It differed in having a lengthened second stage and a 4 m diameter payload shroud to handle shuttle-class or Ariane-type dual payloads. More...
  • Ariane 44P French orbital launch vehicle. Ariane 4 with 4 solid rocket strap-ons. More...
  • Atlas IIAS American orbital launch vehicle. The Atlas II booster was 2.7-meters longer than the 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. Higher performance RL10A-4 or RL10A-4-1 engines replaced Atlas II's RL10A-3-3A. The Atlas IIAS model added four Thiokol Castor IVA solid rocket boosters (SRBs) to the core Atlas stage to augment thrust for the first two minutes of flight. More...

Associated Manufacturers and Agencies
  • JSAT Japanese agency. Japan Satellite Systems, Japan. 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...
  • Kourou After the agreement with newly independent Algeria for France to evacuate their launch sites in that country, a location near Biscarosse was selected for French missile testing. However since only launches westwards across the Bay of Biscay could be made from this site, it was unsuitable for France's Diamant orbital launch vehicle. After reviewing 14 potential sites, a location in the South American French colony of Guiana was selected. This would allow over-water launches to a tremendous range of possible orbital inclinations -- from -100.5 deg to 1.5 deg. Being near the equator, it would provide the maximum assist from the earth's rotation for launches into equatorial orbits. The decision was formalized in April 1964 and in July 1966 ELDO chose the site for future launches of the Europa II launch vehicle. More...

JCSAT Chronology


1989 March 6 - . 23:29 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44LP. LV Configuration: Ariane 44LP V29.
  • JCSAT 1 - . Mass: 2,280 kg (5,020 lb). Nation: Japan. Agency: JCSAT. Program: JCSAT. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 393. Completed Operations Date: 1998-08-17 . USAF Sat Cat: 19874 . COSPAR: 1989-020A. Apogee: 36,018 km (22,380 mi). Perigee: 35,971 km (22,351 mi). Inclination: 4.1000 deg. Period: 1,446.80 min. Japanese domestic communications; 150 deg E. Domestic communication. Launching states: Japan, France, USA. Launch vehicle Ariane 29 (Ariane IV). Launching organization ARIANE SPACE. Launch time 1129 GMT. Positioned in geosynchronous orbit at 150 deg E in 1989-1997; 148 deg E in 1997; 111 deg E in 1998 As of 31 August 2001 located at 19.12 deg E drifting at 2.653 deg W per day. As of 2007 Mar 11 located at 63.05E drifting at 2.678W degrees per day.

1990 January 1 - . 00:07 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Commercial Titan 3. LV Configuration: Commercial Titan 3 CT-1.
  • JCSAT 2 - . Payload: JCSat 2 / Orbus-7S. Mass: 2,280 kg (5,020 lb). Nation: Japan. Agency: JCSAT. Program: JCSAT. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 393. USAF Sat Cat: 20402 . COSPAR: 1990-001B. Apogee: 35,877 km (22,292 mi). Perigee: 35,868 km (22,287 mi). Inclination: 0.1000 deg. Period: 1,440.50 min. Japanese domestic communications; 154 deg E. Domestic communications. Launching organization Martin Marietta. Launch time 0007 GMT. Positioned in geosynchronous orbit at 154 deg E in 1990-1999 As of 5 September 2001 located at 154.04 deg E drifting at 0.006 deg W per day. As of 2007 Mar 10 located at 116.78W drifting at 6.255W degrees per day.

1995 August 29 - . 00:53 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36B. LV Family: Atlas. Launch Vehicle: Atlas IIAS. LV Configuration: Atlas IIAS AC-117.
  • JCSAT 3 - . Mass: 1,841 kg (4,058 lb). Nation: Japan. Agency: JSAT. Program: JCSAT. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 23649 . COSPAR: 1995-043A. Apogee: 35,794 km (22,241 mi). Perigee: 35,779 km (22,231 mi). Inclination: 0.0000 deg. Period: 1,436.20 min. 8 transponders for digital TV. Stationed at 128.1 deg E. Launch vehicle put payload into supersynchronous earth orbit with IFR/MRS trajectory option. Positioned in geosynchronous orbit at 128 deg E in 1995-1999 As of 5 September 2001 located at 128.05 deg E drifting at 0.005 deg E per day. As of 2007 Feb 20 located at 126.99E drifting at 0.144W degrees per day.

1997 February 17 - . 01:42 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36B. LV Family: Atlas. Launch Vehicle: Atlas IIAS. LV Configuration: Atlas IIAS AC-127.
  • JCSAT 4 - . Nation: Japan. Agency: JSAT. Manufacturer: El Segundo. Program: JCSAT. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 24732 . COSPAR: 1997-007A. Apogee: 35,793 km (22,240 mi). Perigee: 35,780 km (22,230 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Geosynchronous. Stationed over 150.0E Launch vehicle put payload into supersynchronous earth orbit with IFR/MRS trajectory option. Positioned in geosynchronous orbit at 150 deg E in 1997-1998; 124 deg E in 1998-1999; 127 deg E in 1999. As of 5 September 2001 located at 127.02 deg E drifting at 0.015 deg W per day. As of 2007 Mar 7 located at 150.01E drifting at 0.008W degrees per day.

1997 December 2 - . 22:52 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44P. LV Configuration: Ariane 44P-3 V103.
  • JCSAT 5 - . Nation: Japan. Agency: JSAT. Manufacturer: El Segundo. Program: JCSAT. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 25067 . COSPAR: 1997-075A. Apogee: 35,790 km (22,230 mi). Perigee: 35,784 km (22,235 mi). Inclination: 0.1000 deg. Period: 1,436.10 min. Summary: Geosynchronous. Stationed over 139.4E Positioned in geosynchronous orbit at 150 deg E in 1998-1999 As of 4 September 2001 located at 150.00 deg E drifting at 0.012 deg W per day. As of 2007 Mar 8 located at 127.98E drifting at 0.014W degrees per day..

1999 February 16 - . 01:45 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36A. Launch Pad: SLC36A. LV Family: Atlas. Launch Vehicle: Atlas IIAS. LV Configuration: Atlas IIAS AC-152.
  • JCSAT-6 - . Mass: 2,900 kg (6,300 lb). Nation: Japan. Agency: JSAT. Manufacturer: El Segundo. Program: JCSAT. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 25630 . COSPAR: 1999-006A. Apogee: 35,791 km (22,239 mi). Perigee: 35,784 km (22,235 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. JCSAT-6 carried a Ku-band relay system. It was operated by Japan Satellite Systems, Inc., Tokyo, provided communications and data relay for Japan and the Pacific Rim. Two burns of the Centaur upper stage placed it into a supersynchronous transfer orbit of 258 km x 96736 km x 24.1 degrees. JCSAT-6's on-board R-4D engine would maneuver it into its final geostationary location. Dry mass of the spacecraft was 1230 kg. Stationed at 124 deg E Positioned in geosynchronous orbit at 123 deg E in 1999. As of 5 September 2001 located at 124.00 deg E drifting at 0.014 deg W per day. As of 2007 Mar 10 located at 124.01E drifting at 0.011W degrees per day.

2002 March 29 - . 01:29 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44L. LV Configuration: Ariane 44L V149.
  • JCSAT 8 - . Payload: JC-Sat 2A. Mass: 3,800 kg (8,300 lb). Nation: Japan. Agency: JSAT. Manufacturer: El Segundo. Program: JCSAT. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 27400 . COSPAR: 2002-015B. Apogee: 35,802 km (22,246 mi). Perigee: 35,770 km (22,220 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Communications satellite. Launch delayed from mid-March. JCSAT 8 was a Boeing BSS-601 with a launch mass of 2600 kg and a dry mass around 1200 kg. It was to be used by Japan Satellite to replace JCSAT 2. As of 2007 Mar 10 located at 24.29E drifting at 0.020W degrees per day.

2006 April 12 - . 23:30 GMT - . Launch Site: Kiritimati. Launch Pad: 0.0 N x 154.0 W. Launch Platform: ODYSSEY. LV Family: Zenit. Launch Vehicle: Zenit-3SL. LV Configuration: Zenit-3SL 21.
  • JCSAT 9 - . Payload: A2100AX. Mass: 4,401 kg (9,702 lb). Nation: Japan. Agency: JSAT. Manufacturer: Lockheed. Program: JCSAT. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 2100. USAF Sat Cat: 29045 . COSPAR: 2006-010A. Apogee: 35,790 km (22,230 mi). Perigee: 35,785 km (22,235 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Summary: As of 2007 Mar 8 located at 132.01E drifting at 0.014W degrees per day..

2006 August 11 - . 22:15 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA3. LV Family: Ariane 5. Launch Vehicle: Ariane 5ECA. LV Configuration: Ariane 5ECA V172 (531).
  • JCSAT 10 - . Payload: AS2100AX. Mass: 4,048 kg (8,924 lb). Nation: Japan. Agency: JSAT. Manufacturer: Lockheed. Program: JCSAT. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 2100. USAF Sat Cat: 29272 . COSPAR: 2006-033A. Apogee: 35,793 km (22,240 mi). Perigee: 35,781 km (22,233 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Summary: Ku/C-band television broadcasting satellite for the Japanese market; mass 1858 kg dry. As of 2007 Mar 11 located at 128.01E drifting at 0.012W degrees per day..

2007 September 5 - . 22:43 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton/Briz M. LV Configuration: Proton-M/Briz-M 535-22. FAILURE: Second stage engine failure soon after ignition.. Failed Stage: 2.
  • JCSAT 11 - . Mass: 4,007 kg (8,833 lb). Nation: USA. Agency: ILS. Manufacturer: Lockheed. Program: JCSAT. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 2100. COSPAR: F20070905.

2009 August 21 - . 22:09 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA3. LV Family: Ariane 5. Launch Vehicle: Ariane 5ECA.
  • JCSAT 12 - . Mass: 4,000 kg (8,800 lb). Nation: France. Agency: Arianespace. Program: JCSAT. Class: Communications. Type: Communications satellite. Spacecraft: AS 2100. USAF Sat Cat: 35755 . COSPAR: 2009-044A. Apogee: 35,795 km (22,241 mi). Perigee: 35,779 km (22,231 mi). Inclination: 0.0000 deg. Period: 1,436.10 min.

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