JCSAT-2A

JCSAT-2A, known as JCSAT-8 before launch, is a geostationary communications satellite operated by SKY Perfect JSAT Group (JSAT) which was designed and manufactured by Boeing on the BSS-601 platform. It has Ku band and C band payload and was used to replace JCSAT-2 at the 154°East longitude. It covers Japan, East Asia, Australia and Hawaii.[3][2][4]

JCSAT-8 → JCSAT-2A
NamesJCSAT-8 (Apr 2000 to Mar 2002) JCSAT-2A (Mar 2002 onward)
Mission typeCommunication
OperatorSKY Perfect JSAT Group
COSPAR ID2002-015A[1]
SATCAT no.27399[2]
WebsiteJSAT Official Page
Spacecraft properties
SpacecraftJCSAT-8
BusHS-601
ManufacturerHughes
Launch mass2,460 kg (5,420 lb)
Dimensions21 m × 7.6 m × 4.6 m (69 ft × 25 ft × 15 ft) with solar panels and antennas deployed.
Power3.7 kW
Start of mission
Launch date01:29:00, March 29, 2002 (UTC) (2002-03-29T01:29:00Z)[1]
RocketAriane 44L
Launch siteGSC ELA-2
ContractorArianespace
Orbital parameters
RegimeGEO
Longitude154°East
Transponders
BandKu band: 16 × 57 Mhz
C band: 11 × 36 MHz + 5 × 54 MHz
Bandwidth1,578 MHz
TWTA powerKu band 120 W
C band 34 W
 

Satellite description

The spacecraft was designed and manufactured by Boeing on the BSS-601 satellite bus. It had a launch mass of 2,460 kg (5,420 lb) a power production of 3.7 kW and an 11-year design life.[3] Stowed for launch it measured 3.6 m × 2.7 m × 4.3 m (11.8 ft × 8.9 ft × 14.1 ft), with its solar panels and antennas deployed it measured 21 m × 4.3 m × 7.6 m (69 ft × 14 ft × 25 ft).[4][5]

Its payload is composed of sixteen 57 MHz Ku band plus eleven 36 MHz and five 54 MHz C band transponders, for a total bandwidth of 1,578 MHz.[6] Its high power amplifiers had an output power of 120 Watts on Ku band and　34 Watts on C band.[4][5]

The Ku band footprint covers only Japan, while the C band beams cover Japan, East Asia, Australia and Hawaii.[4]

History

In April 2000, JSAT ordered JCSAT-8 from Boeing (which had acquired the HS-601 business from Hughes), to replace JCSAT-2 at the 154° East slot. It would provide coverage to Japan, East Asia, Australia and Hawaii.[3]

An Ariane 44L successfully launched JCSAT-8 on March 29, 2002 at 01:29  UTC from Guiana Space Centre. Once successfully deployed, it was renamed JCSAT-2A.[3]

gollark: Any particular improvement might not work, but I would be *very very surprised* if people several hundred years ago just happened to stumble on the optimal court system.
gollark: *An* issue is that sentencing can vary significantly based on judges' arbitrary opinions and how they are feeling. So maybe if you averaged over multiple judges once the facts of the case were determined it would help. Although there are a lot of ways for that to go wrong (messing with the framing of those and such).
gollark: Thank you for your somewhat misspelt tautology.
gollark: I doubt there's literally no way to fix it. Decoupling sentencing and judgement of guilt somehow, maybe.
gollark: Depends on what "psychological evaluation" actually means in practice.

References
  1. "JCSAT 8". NASA Space Science Data Coordinated Archive. 27 April 2016. Retrieved 2016-08-04.
  2. "JCSat 2A (JCSat 8)". Satbeams. Retrieved 26 July 2016.
  3. Krebs, Gunter Dirk (2016-04-21). "JCSat 8 (JCSat 2A)". Gunter's Space Page. Retrieved 2016-07-20.
  4. "JCSAT-2A". SKY Perfect JSAT Group. Retrieved August 9, 2016.
  5. "Launch Kit V-149" (PDF) (in French). Arianespace. March 18, 2002. Archived from the original (PDF) on 2004-04-11. Retrieved 2016-09-08.
  6. "Who we are" (PDF). SSKY Perfect JSAT Group. 2012-08-03. Retrieved 2016-08-02.
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