NamesJCSAT-10 (Apr 2004 to Aug 2006) JCSAT-3A (Aug 2006 onward)
Mission typeCommunication
OperatorSKY Perfect JSAT Group
COSPAR ID2006-033A[1]
SATCAT no.29272
Spacecraft properties
ManufacturerLockheed Martin
Launch mass4,048 kg (8,924 lb)
Dimensions27 m × 9 m (89 ft × 30 ft) with solar panels and antennas deployed.
Start of mission
Launch date22:14:00, August 11, 2006 (UTC) (2006-08-11T22:14:00Z)[2][3]
RocketAriane 5 ECA
Launch siteGSC ELA-3
Orbital parameters
Band18 × 27 Mhz and 12 × 36 MHz Ku band
12 × 36 MHz C band
Bandwidth1,350 MHz
TWTA powerKu band 127 W
C band 48 W

JCSAT-3A, known as JCSAT-10 before launch, is a geostationary communications satellite operated by SKY Perfect JSAT Group (JSAT) which was designed and manufactured by Lockheed Martin on the A2100 platform.[4][1]

Satellite description

The spacecraft was designed and manufactured by Lockheed Martin on the A2100AX satellite bus. It had a launch mass of 4,048 kg (8,924 lb) and a 15-year design life. It would provide communications services throughout Japan and Asia.[4] As most satellites based on the A2100 platform, it uses a 460 N (100 lbf) LEROS-1C LAE for orbit raising.[4] Its solar panels span 26.9 m (88 ft) when fully deployed and, with its antennas in fully extended configuration it is 8.6 m (28 ft) wide.[5]

Its payload is composed of eighteen 27 MHz and twelve 36 MHz Ku band plus twelve C band transponders, for a total bandwidth of 1,350 MHz.[6] Its high-power amplifiers had an output power of 127 Watts on Ku band and 48 Watts on C band.[5]


On April 20, 2004, JSAT ordered a satellite from Lockheed Martin, JCSAT-10. Based on the A2100AX platform, it would have a C band and Ku band payload and was expected to occupy the 128°East slot after its planned 2006 launch.[7]

On August 11, 2006 an Ariane 5 ECA launched JCSAT-10 along Syracuse-3B into a transfer orbit. Upon successful deployment at 128°East longitude, it was renamed JCSAT-3A.[4]


  1. ^ a b "JCSat 3A (JCSat 10)". Satbeams. Retrieved 26 July 2016.
  2. ^ McDowell, Jonathan. "Ariane 5". Retrieved 2016-08-10.
  3. ^ "JCSAT 10". NASA Space Science Data Coordinated Archive. 27 April 2016. Retrieved 2016-08-04.
  4. ^ a b c d Krebs, Gunter Dirk (2016-04-21). "JCSat 10, 11, 12 (JCSat 3A, RA)". Gunter's Space Page. Retrieved 2016-07-20.
  5. ^ a b "JCSAT-3A". SKY Perfect JSAT Group. Retrieved August 9, 2016.
  6. ^ "Who we are" (PDF). SSKY Perfect JSAT Group. 2012-08-03. Retrieved 2016-08-02.
  7. ^ "JSAT Corporation Awards Lockheed Martin Contract For Second A2100 Satellite". Icaa.eu. Lockheed Martin Space Systems. April 20, 2004. Retrieved 2016-08-05.