| 词条 | Optus D3 |
| 释义 |
| name = Optus D3 | image = | image_caption = | mission_type = Communication | operator = Optus | website = http://www.optus.com.au/about/network/satellite/fleet/b3 | COSPAR_ID = 2009-044B | SATCAT = 35756 | mission_duration = 15 years | spacecraft_bus = Star-2.4 | manufacturer = Orbital Sciences | dry_mass = | launch_mass = {{convert|2401|kg}} | power = | launch_date = {{start-date|21 August 2009, 22:09|timezone=yes}} UTC | launch_rocket = Ariane 5ECA | launch_site = Kourou ELA-3 | launch_contractor = Arianespace | entered_service = | disposal_type = | deactivated = | orbit_epoch = 23 January 2015, 19:12:10 UTC[1] | orbit_reference = Geocentric | orbit_regime = Geostationary | orbit_periapsis = {{convert|35778|km|mi}}[1] | orbit_apoapsis = {{convert|35808|km|mi}}[1] | orbit_inclination = 0.05 degrees[1] | orbit_period = 1436.12 minutes[1] | orbit_longitude = 156° east | apsis = gee }}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 {{convert|2401|kg|adj=on}} 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.[2] 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.[3] 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).[2] See also{{Portal|Spaceflight}}
References1. ^1 2 3 4 {{cite web|url=http://www.n2yo.com/satellite/?s=35756|title=OPTUS D3 Satellite details 2009-044B NORAD 35756|publisher=N2YO|date=23 January 2015|accessdate=25 January 2015}} {{Orbital launches in 2009}}{{Use Australian English|date=January 2014}}{{Use dmy dates|date=January 2014}}{{communications-satellite-stub}}2. ^1 {{cite web|url=http://space.skyrocket.de/doc_sdat/optus-d2.htm|title=Optus D2, D3|last=Krebs|first=Gunter|publisher=Gunter's Space Page|accessdate=2009-08-21}} 3. ^{{cite web|url=http://www.arianespace.com/news-mission-update/2009/621.asp|title=Preparations continue with the JCSAT-12 and Optus D3 payloads for Ariane 5's next launch|date=2009-08-12|work=Mission Update|publisher=Arianespace|accessdate=2009-08-21}} 5 : Optus|Communications satellite constellations|Satellites of Australia|Spacecraft launched in 2009|Satellites using the GEOStar bus |
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