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USA-223
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.〔''Guinness World Records 2013'', Page 029 (Hardcover edition). ISBN 9781904994879〕
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 . Bruce A. Carlson, the director of the NRO, described the spacecraft as being the largest satellite ever launched.
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. 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.
==See also==
*USA-202
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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