|Mission duration||15 years|
|Launch mass||2,401 kilograms (5,293 lb)|
|Start of mission|
|Launch date||21 August 2009, 22:09UTC|
|Launch site||Kourou ELA-3|
|Perigee altitude||35,778 kilometres (22,231 mi)|
|Apogee altitude||35,808 kilometres (22,250 mi)|
|Epoch||23 January 2015, 19:12:10 UTC|
Optus D3 is an Australian geostationary communications satellite, which is operated by Optus and provides communications services to Australasia. D3 was the third Optus-D satellite to be launched. It is a 2,401-kilogram (5,293 lb) satellite, which was constructed by Orbital Sciences Corporation based on the Star-2.4 satellite bus, with the same configuration as the earlier Optus D2 satellite.
It was launched, along with the Japanese JCSAT-12 satellite, by Arianespace. An Ariane 5ECA rocket was used for the launch, which occurred from ELA-3 at the Guiana Space Centre in Kourou, French Guiana. The launch took place at 22:09 GMT on 21 August 2009, at the start of a 60-minute launch window.
Optus D3 separated from its carrier rocket into a geosynchronous transfer orbit, from which it raised itself to geostationary orbit using an IHI -500-N apogee motor. It has a design life of fifteen years, and carries thirty two J band transponders (US IEEE Ku band).