In 2003 Orbital was awarded a firm order for two GEO satellites by Sydney, Australia based Optus Networks, Pty. The satellites, Optus D1 and D2, were placed into service in 2006 and 2007 respectively. In early 2007, Optus awarded Orbital a contract for a third satellite, D3. Based on Orbital’s STAR™ platform, the satellites provide Ku-band fixed communications and direct television broadcasting services to Australia and New Zealand.
Optus D1 and D2, generate approximately 3.8 kilowatts of payload power to service 24 active transponders. The third satellite, D3, generates approximately 5 kilowatts of payload power to service up to 32 active transponders.
Performance:
Transponder Power:
Stabilization:
Launch Mass:
Orbit:
Mission Life:
Launch:
D1
3800 W
zero momentum
3-axis stabilized
2,300 kg
(5,071 lbs)
160° E
15 years
October 13, 2006
D2
3800W
zero momentum
3-axis stabilized
2,375 kg
(5,230 lbs)
152° E
15 years
October 5, 2007
D3
5000 W
zero momentum
3-axis stabilized
2,500 kg
(5,512 lbs)
156° E
15 years
August 21, 2009
Coverage: Australia
and
New Zealand
Customer: Optus Networks, Pty. – Sydney, Australia
Mission: Ku-band fixed communications and direct television to Australia
and
New Zealand
