Broadcasting Satellite System Corporation

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Template:Short description

The Broadcasting Satellite System Corporation (B-SAT) is a Japanese corporation established in April 1993 to procure, manage and lease transponders on communications satellites. Its largest stockholder, owning 49.9%, is NHK, the Japan Broadcasting Corporation.[1] In 1994, it was ranked by Space News as the world's 19th largest fixed satellite operator.[2]

Satellite fleet

The B-SAT fleet has an extensive history. This is an overview of the satellites.

Former satellites

These satellites were managed by Broadcasting Satellite System Corporation but are now decommissioned.[3]

BSAT-1a

BSAT-1a was an HS-376 based satellite with 4 active plus 4 spares Ku-band transponders. It was successfully launched on 16 April 1997 aboard an Ariane 44LP along Thaicom 3.[4]

BSAT-1b

BSAT-1b was an HS-376 based satellite with 4 active plus 4 spares Ku-band transponders. It was successfully launched on 28 April 1998 aboard an Ariane 44P along Nilesat 101.[4]

BSAT-2a

BSAT-2a was manufactured by Orbital Sciences Corporation based on the Star Bus platform. It was launched aboard an Ariane 5G rocket on 8 March 2001. BSAT-2a serves as an on orbit backup to BSAT-2c. BSAT-2a was decommissioned in January 2013.[5]

BSAT-2b

BSAT-2b was a twin of BSAT-2a, also based on the Star Bus platform. Launched along Artemis aboard an Ariane 5G, it was left on an unusable orbit and that it couldn't compensate for. The electric propulsion Artemis, could use its higher efficiency ion drives, to reach operational orbit.[6][7]

BSAT-2c

BSAT-2c was manufactured by Orbital Sciences Corporation Based on the Star Bus platform. It was launched aboard an Ariane 5 rocket on 11 June 2003. In-orbit delivery to B-SAT took place 15 July 2003.[8] BSAT-2c was decommissioned in August 2013.[5]

Current satellites

The current fleet of Broadcasting Satellite System Corporation as of August 2020 is composed of five spacecraft.[3]

BSAT-3a

Launched on 14 August 2007 by an Ariane 5 ECA launch vehicle.[9] It was manufactured by Lockheed Martin Commercial Space Systems based on the A2100A platform design, with a communications payload containing 12 Ku-band channels, eight of which operate at one time.[10] Located in geostationary orbit at 110.0° East longitude, it replaced BSAT-1a and BSAT-1b.[1]

BSAT-3b

B-SAT awarded Lockheed Martin the contract to build its next geostationary telecommunications satellite, BSAT-3b, which was launched by Arianespace aboard an Ariane 5 ECA (along with the Eutelsat W3B) on 28 October 2010.[11][12][13]

BSAT-3c

BSAT-3c, also known as JCSAT-110R, is a satellite co-owned with SKY Perfect JSAT with each operator owning a separate payload. It was built by Lockheed Martin on its A2100A platform. It has two separate payloads with 12 Ku-band transponders each. It was successfully launched on 7 August 2011 on an Ariane 5 ECA along Astra 1N.[14]

BSAT-4a

The first satellite of the fourth generation BSAT was built by SSL on its SSL 1300 platform. It has 24 Ku-band transponders and mass of Script error: No such module "convert".. BSAT-4a launched on 29 September 2017 aboard an Ariane 5 ECA.[15]

BSAT-4b

The second satellite of the fourth generation BSAT was built by Maxar Technologies on its SSL 1300 platform. It has 24 Ku-band transponders and mass around Script error: No such module "convert".. BSAT-4b was launched aboard an Ariane 5 ECA on 15 August 2020.[16]

Satellite list

Name Bus Payload Order Launch Launch Vehicle Launch Result Launch Weight Status Remarks
BS-3N AS-3000 3 Ku-band Template:NA 8 July 1994 Ariane 44L Template:Success Script error: No such module "convert". Template:Bad Launched with PAS 2.[17] Transferred to B-SAT in November 1998.[5][18]
BSAT-1a HS-376 4 Ku-band 1993 16 April 1997 Ariane 44LP Template:Success Script error: No such module "convert". Template:Bad Launched with Thaicom 3.
BSAT-1b HS-376 4 Ku-band 1993 28 April 1998 Ariane 44P Template:Success Script error: No such module "convert". Template:Bad Launched with Nilesat 101.
BSAT-2a STAR-1 4 Ku-band 1999 8 March 2001 Ariane 5G Template:Success Script error: No such module "convert". Template:Bad Launched with Eurobird 1.[6][5]
BSAT-2b STAR-1 4 Ku-band 1999 12 July 2001 Ariane 5G Template:Failure Script error: No such module "convert". Template:Failure Launched with Artemis. Launch failure left it in too low an orbit.[6][5]
BSAT-2c STAR-1 4 Ku-band 2001 11 June 2003 Ariane 5G Template:Success Script error: No such module "convert". Template:Bad Launched with Optus C1.[5][19]
BSAT-3a A2100A 12 Ku-band 2005 14 August 2007 Ariane 5 ECA Template:Success Script error: No such module "convert". Template:Success Launched along Spaceway-3.[5][20]
BSAT-3b A2100A 12 Ku-band 2008 28 October 2010 Ariane 5 ECA Template:Success Script error: No such module "convert". Template:Success Launched with Eutelsat W3B.[5][20]
BSAT-3c A2100A 24 Ku-band and 24 C-band 2008 6 August 2011 Ariane 5 ECA Template:Success Script error: No such module "convert". Template:Success Launched with Astra 1N. Co-owned with SKY Perfect JSAT, named as JCSAT-110R. Backup of N-SAT-110.[14][5]
BSAT-4a SSL 1300 24 Ku-band 2015 29 September 2017 Ariane 5 ECA Template:Success Script error: No such module "convert". Template:Success Launched with Intelsat 37e
BSAT-4b SSL 1300 24 Ku-band 2018 15 August 2020 Ariane 5 ECA Template:Success Script error: No such module "convert". Template:Success at 110.0° East Launched with Galaxy 30 and MEV-2

References

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  1. ↑ a b Script error: No such module "citation/CS1".
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  3. ↑ a b Script error: No such module "citation/CS1".
  4. ↑ a b Script error: No such module "citation/CS1".
  5. ↑ a b c d e f g h i Script error: No such module "citation/CS1".
  6. ↑ a b c Script error: No such module "citation/CS1".
  7. ↑ Script error: No such module "citation/CS1".
  8. ↑ Script error: No such module "citation/CS1".
  9. ↑ Script error: No such module "citation/CS1". Public Domain This article incorporates text from this source, which is in the public domain.
  10. ↑ Script error: No such module "citation/CS1".
  11. ↑ Script error: No such module "citation/CS1".
  12. ↑ Script error: No such module "citation/CS1".
  13. ↑ Script error: No such module "citation/CS1".
  14. ↑ a b Script error: No such module "citation/CS1".
  15. ↑ Script error: No such module "citation/CS1".
  16. ↑ B-SAT corporation
  17. ↑ Script error: No such module "citation/CS1".
  18. ↑ Script error: No such module "citation/CS1".
  19. ↑ Script error: No such module "citation/CS1".
  20. ↑ a b Script error: No such module "citation/CS1".

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Template:BSAT satellites Template:Telecommunications

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