JCSAT-3A

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.

Satellite description
The spacecraft was designed and manufactured by Lockheed Martin on the A2100AX satellite bus. It had a launch mass of 4048 kg and a 15-year design life. It would provide communications services throughout Japan and Asia. As most satellites based on the A2100 platform, it uses a 460 N LEROS-1C LAE for orbit raising. Its solar panels span 26.9 m when fully deployed and, with its antennas in fully extended configuration it is 8.6 m wide.

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. Its high-power amplifiers had an output power of 127 Watts on Ku band and　48 Watts on C band.

History
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.

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.