Orbital N-STAR c - Manual (Page 2)

Orbital Sciences Corporation
45101 Warp Drive • Dulles, Virginia 20166 • www.orbital.com
©2014 Orbital Sciences Corporation FS013_01_2998
N-STAR c
Mission Partners
NTT DoCoMo
NTT DoCoMo is Japan’s premier mobile communications
company, which provides wireless voice and data communications
to tens of millions of subscribers. NTT DoCoMo is the creator of
W-CDMA air interface technology, as well as the groundbreaking
mobile i-mode service.
Orbital Sciences Corporation
Orbital provided the system design and was responsible for the
assembly, integration and test of the spacecraft bus. Orbital also
provided the ground station and procured the launch services.
Lockheed Martin Commercial Space Systems
Lockheed Martin, as the prime contractor, participated in
integration and test, and provided the communications payload.
Arianespace
Launch provider
Specifications
Spacecraft
Launch Mass: 1,625 kg (3,582 lb.)
Redundancy: Typically 2-for-1, minimum
Solar Arrays: Multi-junction Gallium Arsenide cells
Stabilization: Zero momentum; 3-axis stabilized
Pointing: <0.12 ° circular error
Payload Power: ~1.4 kW
Propulsion: Liquid bi-propellant transfer orbit system;
monopropellant (hydrazine) on-orbit
Mission Life: 10 year minimum, tank capacity for >12 years
Orbit: 136 ° East Longitude
Payload
Frequency: S-band mobile communications, C-band
feeder link
Repeater: S-band: 288 W multiport amplifier (three
5-for-4 groups of 24 W solid-state power
amplifiers)
C-band: 2-for-1 solid state power amplifiers
(13 W)
Antenna: 5.1 m unfurlable
Launch
Launch Vehicle: Ariane 5
Site: Kourou, French Guiana
Date: July 5, 2002
N-STAR c was launched
aboard an Ariane 5 rocket.
N-STAR c Mission Profile