Superbird-C2

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Superbird-7 → Superbird-C2
Names

Superbird-8 (Nov 2005 to Aug 2008)

Superbird-C2 (Aug 2008 onward)
Mission type Communications
Operator JSAT
COSPAR ID 2008-038A
SATCAT № 33274
Mission duration 15 years
Spacecraft properties
Bus DS2000
Manufacturer Mitsubishi Electric
Launch mass 4,820 kilograms (10,630 lb)
Dry mass 2,018 kilograms (4,449 lb)
Start of mission
Launch date 14 August 2008, 20:44 (2008-08-14UTC20:44Z) UTC
Rocket Ariane 5ECA V185
Launch site Kourou ELA-3
Contractor Arianespace
Orbital parameters
Regime Geostationary
Longitude 144°East
Transponders
Band 20×27MHz + 8×36MHz Ku band[1]
Bandwidth 828MHz
TWTA power 100W[2]

Superbird
← Superbird-A2 Superbird-8

Superbird-C2, known as Superbird-7 before launch, is a geostationary communications satellite operated by JSAT Corporation and designed and manufactured by Mitsubishi Electric on the DS2000 platform.[3][4] It had a launch weight of 4,820 kilograms (10,630 lb) a 15-year design life and was the first commercial communications satellite built in Japan.[3] Its payload is composed of 28 Ku band transponders with a total bandwidth of 828 MHz.[1]

It was originally ordered by Space Communications Corporation, but it was later merged and absorbed by JSAT Corporation and by the time of the actual launch it was a fylly used Superbird-C2 as a replacement for Superbird-C to provide communications services to Japan, Eastern Asia and the Pacific Ocean.[1]

History[edit]

On April 2005 Space Communications Corporation (SCC) issued an RFP for Superbird-7, a spacecraft destined to replace the aging Superbird-C. On June 28 MELCO got first contract negotiations right, and on October 31, SCC and MELCO successfully concluded the contract negotiation.[4]

On November 1, 2005, SCC makes the orders to MELCO official for the first commercial communications satellite to be built in Japan, the Superbird-7. The contract called for on orbit delivery, with MELCO handling every detail from construction to launch procurement and on orbit testing for final hand over to the customer. It was not only the first SCC order for a commercial communications satellite built in Japan, but the first such order ever. This event meant that MELCO officially entered the market.[4]

Superbird-7 was expected to weight around 5 t (5.5 tons), have 28 Ku band transponders, a design life of 15 years and be launched on the first quarter of 2008. It was going to be renamed as Superbird-C2 once in orbit and be stationed on the 144°E where it would replace the aging Superbird-C. It was expected to offer its services in Japan, Eastern Asia and the Pacific Ocean.[4]

On March 2008, SCC becomes a fully owned subsidiary of SKY Perfect JSAT Group.[5][6] On the SKY Perfect JSAT board meeting of August 6, 2008, it was resolved to merge SKY Perfect Communications, JSAT Corporation and Space Communications Corporation. The merger would see SKY Perfect absorb JSAT and SCC and both legacy companies dissolved. Thus, by the time of launch, Superbird-7 was a JSAT spacecraft.[7]

Superbird-7 was successfully launched along AMC-21 by an Ariane 5 ECA on August 14, 2008, at 20:44 UTC. It separated from the spacecraft at 21:09 UTC and less than an hour later, at 22:03 UTC, it had already spread its solar panels. After the successful launch, Superbird-7 was renamed as Superbird-C2.[8][3]

On October 17, 2008 MELCO announced that they had performed the final handover of the spacecraft to JSAT. They had performed all orbital maneouvers to its correct orbital slot on the 144°East position, had completed the on-orbit tests and performed the necessary acceptance tests.[9] This concluded the commission phase and the spacecraft was put into service.[10]

On August 1, 2012,JSAT and Panasonic Avionics Corporation announced an agreement for under which Panasonic would commit to use the Superbird-C2 beams for its eXConnect in-flight Internet connectivity service in South East Asia.[11]

See also[edit]

  • DS2000 – The satellite bus on which Superbird-C2 is based.
  • SKY PerfecTV! – Satellite TV division of the same owner corporation and major user of Superbird-C2.

References[edit]

  1. ^ a b c "SCC Announces Launch Schedule for Superbird-7" (PDF). SKY Perfect JSAT Corporation. July 17, 2008. Retrieved 2016-08-03. 
  2. ^ "Superbird-C2". SKY Perfect JSAT Corporation & Intelsat. Retrieved 2016-08-03. 
  3. ^ a b c Krebs, Gunter Dirk (2016-04-21). "Superbird 7 (Superbird C2)". Gunter's Space Page. Retrieved 2016-07-20. 
  4. ^ a b c d "Mitsubishi Electric receives order for Superbird-7 communications satellite from Space Communications Corporation" (PDF). MELCO. November 1, 2005. Retrieved 2016-08-03. 
  5. ^ "Making Space Communications Corporation (SCC) a wholly owned subsidiary" (PDF). SKY Perfect JSAT Corporation. March 12, 2008. Retrieved 2016-08-03. 
  6. ^ "History". SKY Perfect JSAT Holdings Inc. Retrieved 2016-07-28. 
  7. ^ "Notice of Merger of Consolidated Subsidiaries" (PDF). SKY Perfect JSAT Corporation. August 6, 2008. Retrieved 2016-08-03. 
  8. ^ "Mitsubishi Electric successfully launches Superbird-7, the first Japan-made commercial communications satellite" (PDF). MELCO. August 15, 2008. Retrieved 2016-08-03. 
  9. ^ "Mitsubishi Electric completes final handover of Superbird-7 (C2) to Sky Perfect JSAT Corporation" (PDF). MELCO. October 17, 2008. Retrieved 2016-08-03. 
  10. ^ "Start of Operation of Superbird-C2 Communications Satellite" (PDF). SKY Perfect JSAT Corporation. October 17, 2008. Retrieved 2016-08-03. 
  11. ^ "Panasonic Avionics Commits to Capacity of SKY Perfect JSAT's Superbird-C2 Satellite" (PDF). SKY Perfect JSAT Corporation. August 1, 2012. Retrieved 2016-08-03.