| 词条 | USA-223 |
| 释义 |
| name = USA-223 | image = | image_caption = | mission_type = ELINT | operator = US NRO | COSPAR_ID = 2010-063A | SATCAT = 37232 | mission_duration = | spacecraft_type = Orion | manufacturer = | dry_mass = | launch_mass = | power = | launch_date = {{start-date|21 November 2010, 22:58|timezone=yes}} UTC[1] | launch_rocket = Delta IV Heavy D351 | launch_site = Cape Canaveral SLC-37B | launch_contractor = ULA | disposal_type = | deactivated = | last_contact = | decay_date = | orbit_epoch = 14 May 2013, 18:44:29 UTC[1] | orbit_reference = Geocentric | orbit_regime = Geosynchronous | orbit_periapsis = {{convert|35601|km|mi|sp=us}} | orbit_apoapsis = {{convert|35985|km|mi|sp=us}} | orbit_inclination = 5.09 degrees | orbit_period = 23.93 hours | orbit_longitude = 100.9° east[2] | apsis = gee }} USA-223, known before launch as NRO Launch 32 (NRO L-32), is an American reconnaissance satellite which was launched in 2010. It is operated by the United States National Reconnaissance Office. It presently holds the record for being the largest spy satellite ever launched.[3]{{quotation needed|date=January 2014}} Whilst details of its mission are officially classified, amateur observers have identified USA-223 as an Orion satellite; the seventh in the Magnum/Orion series. Orion spacecraft are used for electronic signals intelligence, and carry large antennas to enable them to intercept radio transmissions. These antennas are believed to have a diameter of around {{convert|100|m}}.[4] Bruce A. Carlson, the director of the NRO, described the spacecraft as being the largest satellite ever launched.[5] USA-223 was launched by United Launch Alliance, aboard a Delta IV Heavy carrier rocket flying from Space Launch Complex 37B at the Cape Canaveral Air Force Station. The launch occurred at 22:58 UTC on 21 November 2010.[6] Following liftoff the rocket flew East towards a geosynchronous orbit. By 23:05 UTC, official updates on the status of the launch had been discontinued.[7] See also{{Portal|Spaceflight}}
References1. ^{{cite web|url=http://www.heavens-above.com/orbit.aspx?satid=37232|title=USA 223 - Orbit|first=Chris|last=Peat|work=Heavens Above|date=14 May 2013|accessdate=26 December 2013}} {{NRO Launches}}{{Orbital launches in 2010}}{{US-spacecraft-stub}}2. ^{{cite web|url=http://www.ucsusa.org/assets/documents/nwgs/UCS_Satellite_Database_9-1-13.txt|title=UCS Satellite Database|publisher=Union of Concerned Scientists|date=1 September 2013|accessdate=26 December 2013}} 3. ^Guinness World Records 2013, Page 029 (Hardcover edition). {{ISBN|9781904994879}} 4. ^{{cite web|last=Ray|first=Justin|title=Essential U.S. Spy Satellite Launching Friday |url=http://www.space.com/missionlaunches/new-american-spy-satellite-launching-thursday-101117.html|publisher=Space.com|accessdate=24 November 2010|date=17 November 2010}} 5. ^{{cite web|last=Harwood|first=William|title=Delta 4 rocket blasts off with classified NRO satellite|url=http://www.spaceflightnow.com/delta/d351/|publisher=Spaceflight Now|accessdate=24 November 2010|date=21 November 2010}} 6. ^1 {{cite web|last=McDowell|first=Jonathan|title=Issue 635|url=http://www.planet4589.org/space/jsr/latest.html|work=Jonathan's Space Report|accessdate=24 November 2010}} 7. ^{{cite web|last=Ray|first=Justin|title=Mission Status Center|url=http://www.spaceflightnow.com/delta/d351/status.html|work=Delta Mission Report|publisher=Spaceflight Now|accessdate=24 November 2010}} 3 : Spacecraft launched in 2010|Spacecraft launched by Delta IV rockets|USA satellites |
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