It had two wings with four solar panels each, that generated 4.5 kW at the end of its design life.
[7] Its propulsion system was composed of an R-4D-11-300 liquid apogee engine (LAE) with a thrust of 490 N (110 lbf).
It also used had 12 22 N (4.9 lbf) bipropellant thrusters for station keeping and attitude control.
[6][7] The Ku-band footprint covered Japan, southern and eastern Asia, and Hawaii.
[7] Space Communications Corporation (SCC) was founded in 1985, the same year as the original companies that later formed JSAT.