Orbital Optus D2 User Manual
GEO
Communications
Optus D1 and D2
Ku-band Commercial Communications Satellite
FACTS AT A GLANCE
Mission Description
Built for Australia-based Optus Networks Pty Limited, the Optus D-Series satellites provide Ku-band
xed communications and direct television broadcasting services to Australia and New Zealand. The
Orbital-built satellites satisfy Optus' need to replace aging on-orbit spacecraft as well as satisfy higher
than anticipated demand for access to their C1 satellite. D1 was launched in October 2006 and
replaced the Optus B1 satellite at 160 degrees East Longitude; D2 was launched in October 2007 and
replaced the Optus B3 satellite at 152 degrees East Longitude.
Spacecraft
The D-Series satellites are based on Orbital’s ight-proven GEOStar-2™ bus. Each satellite carries
24 active Ku-band transponders on a platform that is ideal for telephony, data and broadcasting
applications. Both spacecraft generate approximately 3.8 kilowatts of payload power.
Coverage:
Australia and New Zealand
Mission:
Ku-band xed communications and
direct television
Customer:
Optus Networks, Pty.
Optus D1 in Orbital's satellite manufacturing
facility in Dulles, Virginia
Optus D2 in the Antenna Range at Orbital's
satellite manufacturing facility in Dulles, Virginia
Optus D1 and D2
Specications
Optus D1
Spacecraft
Launch Mass: 2,300 kg (5,060 lb.)
Solar Arrays: Three panels per array, UTJ Gallium Arsenide cells
Stabilization: 3-axis stabilized; zero momentum system
Propulsion: Liquid bi-propellant transfer orbit system;
monopropellant (hydrazine) on-orbit system
Batteries: Two 4750 W-Hr capacity Li-Ion batteries (BOL)
Mission Life: 15+ years
Orbit: 160° East Longitude
Payload
Ku-band
Repeater: 24 active transponders with 20-for-16 150 W TWTAs;
10-for-8 44 W TWTAs
TWTA Power: 3.8 kW
Antenna: Two 2.3 m deployable dual-shell grid shaped reectors
Launch
Launch Vehicle: Ariane 5
Site: Kourou, French Guiana
Date: October 13, 2006
Mission Partners
Optus of Australia
A leader in providing integrated communications in
Australia
Orbital Sciences Corporation
Prime contractor for three Optus Ku-band satellites
Arianespace
Launch provider
Optus D2
Spacecraft
Launch Mass: 2,375 kg (5,225 lb.)
Solar Arrays: Four panels per array, UTJ Gallium Arsenide cells
Stabilization: 3-axis stabilized; zero momentum system
Propulsion: Liquid bi-propellant transfer orbit system;
monopropellant (hydrazine) on-orbit system
Batteries: Two 4750 W-Hr capacity Li-Ion batteries (BOL)
Mission Life: 15+ years
Orbit: 152° East Longitude
Payload
Ku-band
Repeater: 24 active transponders with 20-for-16 125 W TWTAs;
10-for-8 44 W TWTAs
TWTA Power: 4.0 kW
Antenna: Two 2.3 m deployable dual-shell grid shaped reectors
Launch
Launch Vehicle: Ariane 5
Site: Kourou, French Guiana
Date: October 5, 2007
Optus D1 was launched aboard
an Ariane 5 rocket in 2006.
Optus D2 was launched aboard
an Ariane 5 rocket in 2007.
Orbital Sciences Corporation
45101 Warp Drive
©2014 Orbital Sciences Corporation FS001_04_2998
•
Dulles, Virginia 20166
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www.orbital.com
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