| 词条 | USA-202 |
| 释义 |
| name = USA-202 | image = Image:USA202 Thuraya2.jpg | image_caption = USA 202 and Thuraya 2, photographed on 8 December 2010 from the Netherlands. | insignia = NROL26 USA202 patch.jpg | mission_type = ELINT | operator = NRO | COSPAR_ID = 2009-001A | SATCAT = 33490 | mission_duration = | spacecraft_type = Orion | manufacturer = | dry_mass = | launch_mass = | power = | launch_date = {{start-date|18 January 2009, 02:47|timezone=yes}} UTC | launch_rocket = Delta IV Heavy | launch_site = Cape Canaveral SLC-37B | launch_contractor = United Launch Alliance | disposal_type = | deactivated = | last_contact = | decay_date = | orbit_epoch = 1 January 2014, 15:43:08 UTC[1] | orbit_reference = Geocentric | orbit_regime = Geosynchronous | orbit_periapsis = {{convert|35777|km|mi|sp=us}} | orbit_apoapsis = {{convert|35809|km|mi|sp=us}} | orbit_inclination = 3.69 degrees | orbit_period = 23.93 hours | orbit_longitude = 44° east[2] | apsis = gee }}USA 202,[3] previously NRO Launch 26 or NROL-26, is a classified spacecraft which is operated by the United States National Reconnaissance Office. It is an Advanced Orion ELINT satellite. According to Aviation Week, it "fundamentally involves America's biggest, most secret and expensive military spacecraft on board the world's largest rocket."[4] The combined cost of the spacecraft and launch vehicle has been estimated to be over US$2 billion.[4] Amateur astronomer observations suspected the satellite was eavesdropping on Thuraya 2 and this was reported to be confirmed by documents released on Sep 9, 2016 [5] by The Intercept as part of the Snowden Files.[6] LaunchUSA-202 was launched from Space Launch Complex 37B at the Cape Canaveral Air Force Station, on the third flight of a Delta IV Heavy rocket. The launch was originally scheduled for 2005, but was delayed due to a number of issues, and lift-off took place at 02:47 GMT on 18 January 2009.[7] References1. ^{{cite web|url=http://www.heavens-above.com/orbit.aspx?satid=33490|title=USA 202 - Orbit|first=Chris|last=Peat|work=Heavens Above|date=1 January 2014|accessdate=3 January 2014}} 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=3 January 2014}} 3. ^{{cite web|url=http://host.planet4589.org/space/jsr/back/news.605|title=Issue 605|last=McDowell|first=Jonathan|publisher=Jonathan's Space Report|accessdate=2009-01-18}} 4. ^1 {{cite web |url=http://www.aviationweek.com/aw/generic/story_channel.jsp?channel=space&id=news/NRODSP12108.xml |title=NRO Delays Delta IV Heavy Launch |date=Dec 10, 2008 |publisher=Aviation Week}} 5. ^{{cite web | url = https://theintercept.com/documents/ | title = Documents | publisher = The Intercept}} 6. ^{{cite web | url = http://www.thespacereview.com/article/3095/1 | title = The Space Review: A Nemesis in the Sky: PAN, MENTOR 4 | publisher = The Space Review}} 7. ^{{cite web |url=http://news.prnewswire.com/DisplayReleaseContent.aspx?ACCT=104&STORY=/www/story/01-17-2009/0004956494 |title=First ULA Delta IV Heavy NRO Mission Successfully Lifts Off From Cape Canaveral |publisher=ULA |deadurl=yes |archiveurl=https://web.archive.org/web/20090216180905/http://news.prnewswire.com/DisplayReleaseContent.aspx?ACCT=104&STORY=%2Fwww%2Fstory%2F01-17-2009%2F0004956494 |archivedate=2009-02-16 |df= }} External links{{Portal|Spaceflight}}
4 : National Reconnaissance Office satellites|Spacecraft launched in 2009|Spacecraft launched by Delta IV rockets|USA satellites |
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