On the N-STAR c program, Orbital partnered with Lockheed Martin Corporation to build and launch a geosynchronous communications satellite for Japan's NTT Mobile Communications Network, Inc. (NTT DoCoMo). Lockheed Martin served as prime contractor and payload supplier and integrator, while Orbital was responsible for providing the space system, including the satellite bus and related ground system, as well as procuring the launch vehicle and conducting initial satellite operations.
N-STAR c was launched and delivered to orbit in early July 2002. It is currently providing S-band communications services to mobile users in Japan.
Payload power capability: ~1,330 W
Stabilization: 3-axis, pointing ± 0.1°
Launch mass: 1,625 kg (3,583 lbs)
Orbit: geostationary, 136° East longitude
Mission life: 10 years (tank capacity for > 12 years)
On-Orbit, providing mobile communications and data services
Customer: NTT Mobile Communications Network, Inc. Japan
Mission: S-band mobile communications (three 5-for-4 groups of SSPAs)
C-band (2-for-1 SSPAs)
5.1m unfurlable antenna