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class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Series of signals-intelligence satellites of the U.S. Navy</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">"NOSS" redirects here. For other uses, see <a href="/wiki/Noss_(disambiguation)" class="mw-redirect mw-disambig" title="Noss (disambiguation)">Noss (disambiguation)</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"Intruder (satellite)" redirects here. For the program originally rumored to be called Intruder, see <a href="/wiki/Integrated_Overhead_SIGINT_Architecture" title="Integrated Overhead SIGINT Architecture">Integrated Overhead SIGINT Architecture</a>.</div> <p class="mw-empty-elt"> </p> <figure typeof="mw:File/Thumb"><a href="/wiki/File:NOSS3_4_Plei_29012011_6.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/41/NOSS3_4_Plei_29012011_6.jpg/290px-NOSS3_4_Plei_29012011_6.jpg" decoding="async" width="290" height="193" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/41/NOSS3_4_Plei_29012011_6.jpg/435px-NOSS3_4_Plei_29012011_6.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/41/NOSS3_4_Plei_29012011_6.jpg/580px-NOSS3_4_Plei_29012011_6.jpg 2x" data-file-width="900" data-file-height="600" /></a><figcaption>The NOSS 3-4 duo (2007-027A and C) crossing through the <a href="/wiki/Pleiades" title="Pleiades">Pleiades</a>. Movement in this 10-second exposure is from top to bottom, the A object is leading.</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/File:NOSS-Trio.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b7/NOSS-Trio.jpg/290px-NOSS-Trio.jpg" decoding="async" width="290" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b7/NOSS-Trio.jpg/435px-NOSS-Trio.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b7/NOSS-Trio.jpg/580px-NOSS-Trio.jpg 2x" data-file-width="1024" data-file-height="300" /></a><figcaption>A NOSS satellite trio passes the Moon.</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/File:NOSS_3-3_20160206-1852(UT%2B2)_Kyiv.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/NOSS_3-3_20160206-1852%28UT%2B2%29_Kyiv.jpg/290px-NOSS_3-3_20160206-1852%28UT%2B2%29_Kyiv.jpg" decoding="async" width="290" height="290" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/NOSS_3-3_20160206-1852%28UT%2B2%29_Kyiv.jpg/435px-NOSS_3-3_20160206-1852%28UT%2B2%29_Kyiv.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4f/NOSS_3-3_20160206-1852%28UT%2B2%29_Kyiv.jpg/580px-NOSS_3-3_20160206-1852%28UT%2B2%29_Kyiv.jpg 2x" data-file-width="866" data-file-height="866" /></a><figcaption>NOSS 3-3 duo passing by Polaris (bright star at the bottom). Movement in this 12.3-seconds exposure is from upper-left to bottom-right; the A object is leading. 6 February 2016, 18:52 (UTC+2), <a href="/wiki/Kyiv" title="Kyiv">Kyiv</a>.</figcaption></figure> <p>The <b>Naval Ocean Surveillance System</b> (<b>NOSS</b>) is a series of <a href="/wiki/Signals-intelligence" class="mw-redirect" title="Signals-intelligence">signals-intelligence</a> <a href="/wiki/Reconnaissance_satellite" title="Reconnaissance satellite">satellites</a> that have conducted <a href="/wiki/Signals_intelligence#Electronic_signals_intelligence" title="Signals intelligence">electronic signals intelligence</a> for the <a href="/wiki/United_States_Navy" title="United States Navy">U.S. Navy</a> since the early 1970s.<sup id="cite_ref-Display_1-0" class="reference"><a href="#cite_note-Display-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The first series of satellites were codenamed "White Cloud" or "PARCAE", while second- and third-generation satellites have used the codenames "Ranger" and "Intruder". According to the <a href="/wiki/Union_of_Concerned_Scientists" title="Union of Concerned Scientists">Union of Concerned Scientists</a> in 2023, the system may be called the <b>Space-Based Wide Area Surveillance System (SB-WASS).</b><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>The system is operated by the United States Navy, and its main purpose was <a href="/wiki/Military_tactics" title="Military tactics">tactical</a> <a href="/wiki/Geolocation" class="mw-redirect" title="Geolocation">geolocation</a> of <a href="/wiki/Soviet_Navy" title="Soviet Navy">Soviet Navy</a> assets during the <a href="/wiki/Cold_War" title="Cold War">Cold War</a>. NOSS involves <a href="/wiki/Satellite_cluster" class="mw-redirect" title="Satellite cluster">satellite clusters</a> operating in <a href="/wiki/Low_Earth_orbit" title="Low Earth orbit">low Earth orbit</a> to detect radar and other electronic transmissions from ships at sea and locate them using the <a href="/wiki/Multilateration" class="mw-redirect" title="Multilateration">time difference of arrival</a> technique.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Satellites">Satellites</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Naval_Ocean_Surveillance_System&action=edit&section=1" title="Edit section: Satellites"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable sortable"> <tbody><tr> <th>Name </th> <th><a href="/wiki/International_Designator" title="International Designator">ID</a> </th> <th>Launch date </th> <th>Launch vehicle </th> <th>Launch site </th> <th><a href="/wiki/List_of_NRO_Launches" class="mw-redirect" title="List of NRO Launches">NROL designation</a> </th> <th><a href="/wiki/Perigee" class="mw-redirect" title="Perigee">Perigee</a> </th> <th><a href="/wiki/Apogee" class="mw-redirect" title="Apogee">Apogee</a> </th> <th>Inclination </th> <th>Remarks </th></tr> <tr> <td colspan="10"> <div class="mw-heading mw-heading3"><h3 id="First_generation">First generation</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Naval_Ocean_Surveillance_System&action=edit&section=2" title="Edit section: First generation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> </td></tr> <tr> <td><span class="nowrap"><a href="/w/index.php?title=OPS_6431_SSU-1&action=edit&redlink=1" class="new" title="OPS 6431 SSU-1 (page does not exist)">OPS 6431 SSU-1</a></span> </td> <td>1976-038C </td> <td rowspan="3">30 April 1976 </td> <td rowspan="3"><a href="/wiki/Atlas_E/F" title="Atlas E/F">Atlas E/F</a>-<a href="/w/index.php?title=Multiple_Satellite_Dispenser&action=edit&redlink=1" class="new" title="Multiple Satellite Dispenser (page does not exist)">MSD</a> </td> <td rowspan="3"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3W</a> </td> <td rowspan="27">N/A </td> <td rowspan="3">1,092 km </td> <td rowspan="3">1,128 km </td> <td rowspan="3">63.5° </td> <td rowspan="3">Dispenser designated <a href="/w/index.php?title=OPS_6431&action=edit&redlink=1" class="new" title="OPS 6431 (page does not exist)">OPS 6431</a> and catalogued as 1976-038A. </td></tr> <tr> <td><a href="/w/index.php?title=OPS_6431_SSU-2&action=edit&redlink=1" class="new" title="OPS 6431 SSU-2 (page does not exist)">OPS 6431 SSU-2</a> </td> <td>1976-038D </td></tr> <tr> <td><a href="/w/index.php?title=OPS_6431_SSU-3&action=edit&redlink=1" class="new" title="OPS 6431 SSU-3 (page does not exist)">OPS 6431 SSU-3</a> </td> <td>1976-038J </td></tr> <tr> <td><a href="/w/index.php?title=OPS_8781_SSU-1&action=edit&redlink=1" class="new" title="OPS 8781 SSU-1 (page does not exist)">OPS 8781 SSU-1</a> </td> <td>1977-112D </td> <td rowspan="3">8 December 1977 </td> <td rowspan="3"><a href="/wiki/Atlas_E/F" title="Atlas E/F">Atlas E/F</a>-<a href="/w/index.php?title=Multiple_Satellite_Dispenser&action=edit&redlink=1" class="new" title="Multiple Satellite Dispenser (page does not exist)">MSD</a> </td> <td rowspan="3"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3W</a> </td> <td rowspan="3">1,054 km </td> <td rowspan="3">1,169 km </td> <td rowspan="3">63.4° </td> <td rowspan="3">Dispenser designated <a href="/w/index.php?title=OPS_8781&action=edit&redlink=1" class="new" title="OPS 8781 (page does not exist)">OPS 8781</a> and catalogued as 1977-112A. </td></tr> <tr> <td><a href="/w/index.php?title=OPS_8781_SSU-2&action=edit&redlink=1" class="new" title="OPS 8781 SSU-2 (page does not exist)">OPS 8781 SSU-2</a> </td> <td>1977-112E </td></tr> <tr> <td><a href="/w/index.php?title=OPS_8781_SSU-3&action=edit&redlink=1" class="new" title="OPS 8781 SSU-3 (page does not exist)">OPS 8781 SSU-3</a> </td> <td>1977-112F </td></tr> <tr> <td><a href="/w/index.php?title=OPS_7245_SSU-1&action=edit&redlink=1" class="new" title="OPS 7245 SSU-1 (page does not exist)">OPS 7245 SSU-1</a> </td> <td>1980-019C </td> <td rowspan="3">3 March 1980 </td> <td rowspan="3"><a href="/wiki/Atlas_E/F" title="Atlas E/F">Atlas E/F</a>-<a href="/w/index.php?title=Multiple_Satellite_Dispenser&action=edit&redlink=1" class="new" title="Multiple Satellite Dispenser (page does not exist)">MSD</a> </td> <td rowspan="3"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3W</a> </td> <td rowspan="3">1,035 km </td> <td rowspan="3">1,150 km </td> <td rowspan="3">63.0° </td> <td rowspan="3">Dispenser designated <a href="/w/index.php?title=OPS_7245&action=edit&redlink=1" class="new" title="OPS 7245 (page does not exist)">OPS 7245</a> and catalogued as 1980-019A. </td></tr> <tr> <td><a href="/w/index.php?title=OPS_7245_SSU-2&action=edit&redlink=1" class="new" title="OPS 7245 SSU-2 (page does not exist)">OPS 7245 SSU-2</a> </td> <td>1980-019D </td></tr> <tr> <td><a href="/w/index.php?title=OPS_7245_SSU-3&action=edit&redlink=1" class="new" title="OPS 7245 SSU-3 (page does not exist)">OPS 7245 SSU-3</a> </td> <td>1980-019G </td></tr> <tr> <td><a href="/w/index.php?title=OPS_3255_SSU-1&action=edit&redlink=1" class="new" title="OPS 3255 SSU-1 (page does not exist)">OPS 3255 SSU-1</a> </td> <td>N/A </td> <td rowspan="3">9 December 1980 </td> <td rowspan="3"><a href="/wiki/Atlas_E/F" title="Atlas E/F">Atlas E/F</a>-<a href="/w/index.php?title=Multiple_Satellite_Dispenser&action=edit&redlink=1" class="new" title="Multiple Satellite Dispenser (page does not exist)">MSD</a> </td> <td rowspan="3"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3W</a> </td> <td rowspan="3" colspan="3" align="center">Failed to orbit </td> <td rowspan="3">Dispenser designated <a href="/w/index.php?title=OPS_3255&action=edit&redlink=1" class="new" title="OPS 3255 (page does not exist)">OPS 3255</a>, loss of control after engine failure, followed by explosion. </td></tr> <tr> <td><a href="/w/index.php?title=OPS_3255_SSU-2&action=edit&redlink=1" class="new" title="OPS 3255 SSU-2 (page does not exist)">OPS 3255 SSU-2</a> </td> <td>N/A </td></tr> <tr> <td><a href="/w/index.php?title=OPS_3255_SSU-3&action=edit&redlink=1" class="new" title="OPS 3255 SSU-3 (page does not exist)">OPS 3255 SSU-3</a> </td> <td>N/A </td></tr> <tr> <td><a href="/w/index.php?title=OPS_0252_SSU-1&action=edit&redlink=1" class="new" title="OPS 0252 SSU-1 (page does not exist)">OPS 0252 SSU-1</a> </td> <td>1983-008E </td> <td rowspan="3">9 February 1983 </td> <td rowspan="3"><a href="/wiki/Atlas_H" title="Atlas H">Atlas H</a>-<a href="/w/index.php?title=Multiple_Satellite_Dispenser&action=edit&redlink=1" class="new" title="Multiple Satellite Dispenser (page does not exist)">MSD</a> </td> <td rowspan="3"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3E</a> </td> <td rowspan="3">1,063 km </td> <td rowspan="3">1,186 km </td> <td rowspan="3">63.40° </td> <td rowspan="3">Dispenser designated <a href="/w/index.php?title=OPS_0252&action=edit&redlink=1" class="new" title="OPS 0252 (page does not exist)">OPS 0252</a> and catalogued as 1983-008A. </td></tr> <tr> <td><a href="/w/index.php?title=OPS_0252_SSU-2&action=edit&redlink=1" class="new" title="OPS 0252 SSU-2 (page does not exist)">OPS 0252 SSU-2</a> </td> <td>1983-008F </td></tr> <tr> <td><a href="/w/index.php?title=OPS_0252_SSU-3&action=edit&redlink=1" class="new" title="OPS 0252 SSU-3 (page does not exist)">OPS 0252 SSU-3</a> </td> <td>1983-008H </td></tr> <tr> <td><a href="/w/index.php?title=OPS_6432_SSU-1&action=edit&redlink=1" class="new" title="OPS 6432 SSU-1 (page does not exist)">OPS 6432 SSU-1</a> </td> <td>1983-056C </td> <td rowspan="3">9 June 1983 </td> <td rowspan="3"><a href="/wiki/Atlas_H" title="Atlas H">Atlas H</a>-<a href="/w/index.php?title=Multiple_Satellite_Dispenser&action=edit&redlink=1" class="new" title="Multiple Satellite Dispenser (page does not exist)">MSD</a> </td> <td rowspan="3"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3E</a> </td> <td rowspan="3">851 km </td> <td rowspan="3">1,363 km </td> <td rowspan="3">63.4° </td> <td rowspan="3">Dispenser designated <a href="/w/index.php?title=OPS_6432&action=edit&redlink=1" class="new" title="OPS 6432 (page does not exist)">OPS 6432</a> and catalogued as 1983-056A. </td></tr> <tr> <td><a href="/w/index.php?title=OPS_6432_SSU-2&action=edit&redlink=1" class="new" title="OPS 6432 SSU-2 (page does not exist)">OPS 6432 SSU-2</a> </td> <td>1983-056D </td></tr> <tr> <td><a href="/w/index.php?title=OPS_6432_SSU-3&action=edit&redlink=1" class="new" title="OPS 6432 SSU-3 (page does not exist)">OPS 6432 SSU-3</a> </td> <td>1983-056G </td></tr> <tr> <td><a href="/w/index.php?title=OPS_8737_SSU-1&action=edit&redlink=1" class="new" title="OPS 8737 SSU-1 (page does not exist)">OPS 8737 SSU-1</a> </td> <td>1984-012C </td> <td rowspan="3">5 February 1984 </td> <td rowspan="3"><a href="/wiki/Atlas_H" title="Atlas H">Atlas H</a>-<a href="/w/index.php?title=Multiple_Satellite_Dispenser&action=edit&redlink=1" class="new" title="Multiple Satellite Dispenser (page does not exist)">MSD</a> </td> <td rowspan="3"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3E</a> </td> <td rowspan="3">1,052 km </td> <td rowspan="3">1,172 km </td> <td rowspan="3">63.4° </td> <td rowspan="3">Dispenser designated <a href="/w/index.php?title=OPS_8737&action=edit&redlink=1" class="new" title="OPS 8737 (page does not exist)">OPS 8737</a> and catalogued as 1984-012A. </td></tr> <tr> <td><a href="/w/index.php?title=OPS_8737_SSU-2&action=edit&redlink=1" class="new" title="OPS 8737 SSU-2 (page does not exist)">OPS 8737 SSU-2</a> </td> <td>1984-012D </td></tr> <tr> <td><a href="/w/index.php?title=OPS_8737_SSU-3&action=edit&redlink=1" class="new" title="OPS 8737 SSU-3 (page does not exist)">OPS 8737 SSU-3</a> </td> <td>1984-012F </td></tr> <tr> <td><a href="/w/index.php?title=USA-16&action=edit&redlink=1" class="new" title="USA-16 (page does not exist)">USA-16</a> </td> <td>1986-014E </td> <td rowspan="3">9 February 1986 </td> <td rowspan="3"><a href="/wiki/Atlas_H" title="Atlas H">Atlas H</a>-<a href="/w/index.php?title=Multiple_Satellite_Dispenser&action=edit&redlink=1" class="new" title="Multiple Satellite Dispenser (page does not exist)">MSD</a> </td> <td rowspan="3"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3E</a> </td> <td rowspan="3">1,049 km </td> <td rowspan="3">1,166 km </td> <td rowspan="3">63.0° </td> <td rowspan="3">Dispenser designated <a href="/w/index.php?title=USA-15&action=edit&redlink=1" class="new" title="USA-15 (page does not exist)">USA-15</a> and catalogued as 1986-014A. </td></tr> <tr> <td><a href="/w/index.php?title=USA-17_(satellite)&action=edit&redlink=1" class="new" title="USA-17 (satellite) (page does not exist)">USA-17</a> </td> <td>1986-014F </td></tr> <tr> <td><a href="/w/index.php?title=USA-18&action=edit&redlink=1" class="new" title="USA-18 (page does not exist)">USA-18</a> </td> <td>1986-014H </td></tr> <tr> <td><a href="/w/index.php?title=USA-23&action=edit&redlink=1" class="new" title="USA-23 (page does not exist)">USA-23</a> </td> <td>1987-043E </td> <td rowspan="3">15 May 1987 </td> <td rowspan="3"><a href="/wiki/Atlas_H" title="Atlas H">Atlas H</a>-<a href="/w/index.php?title=Multiple_Satellite_Dispenser&action=edit&redlink=1" class="new" title="Multiple Satellite Dispenser (page does not exist)">MSD</a> </td> <td rowspan="3"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3E</a> </td> <td rowspan="3">1,045 km </td> <td rowspan="3">1,179 km </td> <td rowspan="3">62.9° </td> <td rowspan="3">Dispenser designated <a href="/w/index.php?title=USA-22&action=edit&redlink=1" class="new" title="USA-22 (page does not exist)">USA-22</a> and catalogued as 1987-043A. </td></tr> <tr> <td><a href="/w/index.php?title=USA-24&action=edit&redlink=1" class="new" title="USA-24 (page does not exist)">USA-24</a> </td> <td>1987-043F </td></tr> <tr> <td><a href="/w/index.php?title=USA-26&action=edit&redlink=1" class="new" title="USA-26 (page does not exist)">USA-26</a> </td> <td>1987-043H </td></tr> <tr> <td colspan="10"> <div class="mw-heading mw-heading3"><h3 id="Second_generation">Second generation</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Naval_Ocean_Surveillance_System&action=edit&section=3" title="Edit section: Second generation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> </td></tr> <tr> <td><a href="/w/index.php?title=USA-60&action=edit&redlink=1" class="new" title="USA-60 (page does not exist)">USA-60</a> </td> <td>1990-050E </td> <td rowspan="3">8 June 1990 </td> <td rowspan="3"><span class="nowrap"><a href="/wiki/Titan_IV" title="Titan IV">Titan IV(405)A</a></span> </td> <td rowspan="3"><a href="/wiki/Cape_Canaveral_Air_Force_Station" class="mw-redirect" title="Cape Canaveral Air Force Station">CCAFS</a>, <a href="/wiki/Cape_Canaveral_Space_Launch_Complex_41" title="Cape Canaveral Space Launch Complex 41">LC-41</a> </td> <td rowspan="12">N/A </td> <td rowspan="3">1,071 km </td> <td rowspan="3">1,146 km </td> <td rowspan="3">63.4° </td> <td rowspan="3">Dispenser designated <a href="/w/index.php?title=USA-59&action=edit&redlink=1" class="new" title="USA-59 (page does not exist)">USA-59</a> and catalogued as 1990-050A. </td></tr> <tr> <td><a href="/w/index.php?title=USA-61&action=edit&redlink=1" class="new" title="USA-61 (page does not exist)">USA-61</a> </td> <td>1990-050F </td></tr> <tr> <td><a href="/w/index.php?title=USA-62&action=edit&redlink=1" class="new" title="USA-62 (page does not exist)">USA-62</a> </td> <td>1990-050H </td></tr> <tr> <td><a href="/w/index.php?title=USA-74&action=edit&redlink=1" class="new" title="USA-74 (page does not exist)">USA-74</a> </td> <td>1991-076C </td> <td rowspan="3">8 November 1991 </td> <td rowspan="3"><a href="/wiki/Titan_IV" title="Titan IV">Titan IV(403)A</a> </td> <td rowspan="3"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_4" title="Vandenberg Space Launch Complex 4">SLC-4E</a> </td> <td rowspan="3">1,052 km </td> <td rowspan="3">1,164 km </td> <td rowspan="3">63.4° </td> <td rowspan="3">Dispenser designated <a href="/w/index.php?title=USA-72&action=edit&redlink=1" class="new" title="USA-72 (page does not exist)">USA-72</a> and catalogued as 1991-076A. </td></tr> <tr> <td><a href="/w/index.php?title=USA-76&action=edit&redlink=1" class="new" title="USA-76 (page does not exist)">USA-76</a> </td> <td>1991-076D </td></tr> <tr> <td><a href="/w/index.php?title=USA-77&action=edit&redlink=1" class="new" title="USA-77 (page does not exist)">USA-77</a> </td> <td>1991-076E </td></tr> <tr> <td><a href="/w/index.php?title=Titan_IV_K-11&action=edit&redlink=1" class="new" title="Titan IV K-11 (page does not exist)">Unnamed</a> </td> <td>N/A </td> <td rowspan="3">2 August 1993 </td> <td rowspan="3"><a href="/wiki/Titan_IV" title="Titan IV">Titan IV(403)A</a> </td> <td rowspan="3"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_4" title="Vandenberg Space Launch Complex 4">SLC-4E</a> </td> <td rowspan="3" colspan="3" align="center">Failed to orbit </td> <td rowspan="3">Exploded due to crack in solid rocket motor caused by poor repair. </td></tr> <tr> <td><a href="/w/index.php?title=Titan_IV_K-11&action=edit&redlink=1" class="new" title="Titan IV K-11 (page does not exist)">Unnamed</a> </td> <td>N/A </td></tr> <tr> <td><a href="/w/index.php?title=Titan_IV_K-11&action=edit&redlink=1" class="new" title="Titan IV K-11 (page does not exist)">Unnamed</a> </td> <td>N/A </td></tr> <tr> <td><a href="/w/index.php?title=USA-119&action=edit&redlink=1" class="new" title="USA-119 (page does not exist)">USA-119</a> </td> <td>1996-029A </td> <td rowspan="3">12 May 1996 </td> <td rowspan="3"><a href="/wiki/Titan_IV" title="Titan IV">Titan IV(403)A</a> </td> <td rowspan="3"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_4" title="Vandenberg Space Launch Complex 4">SLC-4E</a> </td> <td rowspan="3">1,050 km </td> <td rowspan="3">1,166 km </td> <td rowspan="3">63.4° </td> <td rowspan="3">Dispenser designated <a href="/w/index.php?title=USA-122&action=edit&redlink=1" class="new" title="USA-122 (page does not exist)">USA-122</a> and catalogued as 1996-029D. </td></tr> <tr> <td><a href="/w/index.php?title=USA-120&action=edit&redlink=1" class="new" title="USA-120 (page does not exist)">USA-120</a> </td> <td>1996-029B </td></tr> <tr> <td><a href="/w/index.php?title=USA-121&action=edit&redlink=1" class="new" title="USA-121 (page does not exist)">USA-121</a> </td> <td>1996-029C </td></tr> <tr> <td colspan="10"> <div class="mw-heading mw-heading3"><h3 id="Third_generation">Third generation</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Naval_Ocean_Surveillance_System&action=edit&section=4" title="Edit section: Third generation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> </td></tr> <tr> <td><a href="/w/index.php?title=USA-160&action=edit&redlink=1" class="new" title="USA-160 (page does not exist)">USA-160</a> </td> <td>2001-040A </td> <td rowspan="2">8 September 2001 </td> <td rowspan="2"><a href="/wiki/Atlas_II" title="Atlas II">Atlas IIAS</a> </td> <td rowspan="2"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3E</a> </td> <td rowspan="2">NROL-13 </td> <td rowspan="2">1,100 km </td> <td rowspan="2">1,100 km </td> <td rowspan="2">63.0° </td> <td rowspan="2"> </td></tr> <tr> <td><a href="/w/index.php?title=USA-160&action=edit&redlink=1" class="new" title="USA-160 (page does not exist)">Unnamed</a>* </td> <td>2001-040C </td></tr> <tr> <td><a href="/w/index.php?title=USA-173&action=edit&redlink=1" class="new" title="USA-173 (page does not exist)">USA-173</a> </td> <td>2003-054A </td> <td rowspan="2">2 December 2003 </td> <td rowspan="2"><a href="/wiki/Atlas_II" title="Atlas II">Atlas IIAS</a> </td> <td rowspan="2"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3E</a> </td> <td rowspan="2">NROL-18 </td> <td rowspan="2">1,013 km </td> <td rowspan="2">1,200 km </td> <td rowspan="2">63.4° </td> <td rowspan="2"> </td></tr> <tr> <td><a href="/w/index.php?title=USA-173&action=edit&redlink=1" class="new" title="USA-173 (page does not exist)">Unnamed</a>* </td> <td>2003-054C </td></tr> <tr> <td><a href="/w/index.php?title=USA-181&action=edit&redlink=1" class="new" title="USA-181 (page does not exist)">USA-181</a> </td> <td>2005-004A </td> <td rowspan="2">3 February 2005 </td> <td rowspan="2"><a href="/wiki/Atlas_III" title="Atlas III">Atlas IIIB</a> </td> <td rowspan="2"><span class="nowrap"><a href="/wiki/Cape_Canaveral_Air_Force_Station" class="mw-redirect" title="Cape Canaveral Air Force Station">CCAFS</a>, <a href="/wiki/Cape_Canaveral_Launch_Complex_36" title="Cape Canaveral Launch Complex 36">SLC-36B</a></span> </td> <td rowspan="2">NROL-23 </td> <td rowspan="2">1,011 km </td> <td rowspan="2">1,209 km </td> <td rowspan="2">63.4° </td> <td rowspan="2"> </td></tr> <tr> <td><a href="/w/index.php?title=USA-181&action=edit&redlink=1" class="new" title="USA-181 (page does not exist)">Unnamed</a>* </td> <td>2005-004C </td></tr> <tr> <td><a href="/w/index.php?title=USA-194&action=edit&redlink=1" class="new" title="USA-194 (page does not exist)">USA-194</a> </td> <td>2007-027A </td> <td rowspan="2">15 June 2007 </td> <td rowspan="2"><a href="/wiki/Atlas_V" title="Atlas V">Atlas V</a> 401 </td> <td rowspan="2"><a href="/wiki/Cape_Canaveral_Air_Force_Station" class="mw-redirect" title="Cape Canaveral Air Force Station">CCAFS</a>, <a href="/wiki/Cape_Canaveral_Space_Launch_Complex_41" title="Cape Canaveral Space Launch Complex 41">SLC-41</a> </td> <td rowspan="2">NROL-30 </td> <td rowspan="2">1,053 km </td> <td rowspan="2">1,163 km </td> <td rowspan="2">63.4° </td> <td rowspan="2">Launched into lower orbit than planned, spacecraft corrected under own power, at expense of operational life. </td></tr> <tr> <td><a href="/w/index.php?title=USA-194&action=edit&redlink=1" class="new" title="USA-194 (page does not exist)">Unnamed</a>* </td> <td>2007-027C </td></tr> <tr> <td><a href="/wiki/USA-229" title="USA-229">USA-229</a> </td> <td>2011-014A </td> <td rowspan="2">15 April 2011 </td> <td rowspan="2"><a href="/wiki/Atlas_V" title="Atlas V">Atlas V</a> 411 </td> <td rowspan="2"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3E</a> </td> <td rowspan="2">NROL-34 </td> <td rowspan="2">1,015 km </td> <td rowspan="2">1,207 km </td> <td rowspan="2">63.46° </td> <td rowspan="2"> </td></tr> <tr> <td><a href="/wiki/USA-229" title="USA-229">Unnamed</a>* </td> <td>2011-014B </td></tr> <tr> <td><a href="/w/index.php?title=USA-238&action=edit&redlink=1" class="new" title="USA-238 (page does not exist)">USA-238</a> </td> <td>2012-048A </td> <td rowspan="2">13 September 2012 </td> <td rowspan="2"><a href="/wiki/Atlas_V" title="Atlas V">Atlas V</a> 401 </td> <td rowspan="2"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3E</a> </td> <td rowspan="2">NROL-36 </td> <td rowspan="2">1,056 km </td> <td rowspan="2">1,158 km </td> <td rowspan="2">63.4° </td> <td rowspan="2"> </td></tr> <tr> <td><a href="/w/index.php?title=USA-238&action=edit&redlink=1" class="new" title="USA-238 (page does not exist)">Unnamed</a>* </td> <td>2012-048P </td></tr> <tr> <td><a href="/w/index.php?title=USA-264&action=edit&redlink=1" class="new" title="USA-264 (page does not exist)">USA-264</a> </td> <td>2015-058A </td> <td rowspan="2">8 October 2015 </td> <td rowspan="2"><a href="/wiki/Atlas_V" title="Atlas V">Atlas V</a> 401 </td> <td rowspan="2"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3E</a> </td> <td rowspan="2">NROL-55 </td> <td rowspan="2">1,013 km </td> <td rowspan="2">1,201 km </td> <td rowspan="2">63.4° </td> <td rowspan="2"> </td></tr> <tr> <td><a href="/w/index.php?title=USA-264&action=edit&redlink=1" class="new" title="USA-264 (page does not exist)">Unnamed</a>* </td> <td>2015-058R </td></tr> <tr> <td><a href="/w/index.php?title=USA-274&action=edit&redlink=1" class="new" title="USA-274 (page does not exist)">USA-274</a> </td> <td>2017-011A </td> <td rowspan="2">1 March 2017 </td> <td rowspan="2"><a href="/wiki/Atlas_V" title="Atlas V">Atlas V</a> 401 </td> <td rowspan="2"><a href="/wiki/Vandenberg_Air_Force_Base" class="mw-redirect" title="Vandenberg Air Force Base">VAFB</a>, <a href="/wiki/Vandenberg_Space_Launch_Complex_3" title="Vandenberg Space Launch Complex 3">SLC-3E</a> </td> <td rowspan="2">NROL-79 </td> <td rowspan="2">1,010 km </td> <td rowspan="2">1,204 km </td> <td rowspan="2">63.4° </td> <td rowspan="2"> </td></tr> <tr> <td><a href="/w/index.php?title=USA-274&action=edit&redlink=1" class="new" title="USA-274 (page does not exist)">Unnamed</a>* </td> <td>2017-011B </td></tr> <tr> <td><a href="/w/index.php?title=USA-327&action=edit&redlink=1" class="new" title="USA-327 (page does not exist)">USA-327</a> </td> <td>2022-040A </td> <td rowspan="2">17 April 2022 </td> <td rowspan="2"><a href="/wiki/Falcon_9_Block_5" title="Falcon 9 Block 5">Falcon 9 Block 5</a> </td> <td rowspan="2"><a href="/wiki/Cape_Canaveral_Air_Force_Station" class="mw-redirect" title="Cape Canaveral Air Force Station">CCAFS</a>, <a href="/wiki/Cape_Canaveral_Space_Launch_Complex_40" title="Cape Canaveral Space Launch Complex 40">SLC-40</a> </td> <td rowspan="2">NROL-85 </td> <td rowspan="2">1,100 km </td> <td rowspan="2">1,100 km </td> <td rowspan="2">63.4° </td> <td rowspan="2">Launched. </td></tr> <tr> <td><a href="/w/index.php?title=USA-327&action=edit&redlink=1" class="new" title="USA-327 (page does not exist)">Unnamed</a>* </td> <td>Not catalogued </td></tr> </tbody></table> <dl><dd><i>* One satellite from each third generation pair is officially catalogued as debris</i>.</dd> <dd>data from <a rel="nofollow" class="external autonumber" href="https://web.archive.org/web/20111011061757/http://www.astronautix.com/craft/noss.htm">[1]</a>, <a rel="nofollow" class="external autonumber" href="https://web.archive.org/web/20081121003559/http://www.planet4589.org/space/jsr/back/news.163">[2]</a></dd></dl> <div class="mw-heading mw-heading2"><h2 id="Cost">Cost</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Naval_Ocean_Surveillance_System&action=edit&section=5" title="Edit section: Cost"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The costs of the NOSS satellites (excluding costs for the launch vehicle), which were destroyed in a Titan IV launch failure in 1993, were US$800 million (inflation adjusted US$ 1.7 billion in 2025).<sup id="cite_ref-NYT19930804_4-0" class="reference"><a href="#cite_note-NYT19930804-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Naval_Ocean_Surveillance_System&action=edit&section=6" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Poppy_(satellite)" title="Poppy (satellite)">Poppy (satellite)</a></li> <li><a href="/wiki/Yaogan" title="Yaogan">Yaogan</a></li> <li><a href="/wiki/CERES_(satellite)" title="CERES (satellite)">CERES (satellite)</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Naval_Ocean_Surveillance_System&action=edit&section=7" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist 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data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1976-038C">"Display: SSU 1/2 1976-038C"</a>. NASA. 14 May 2020<span class="reference-accessdate">. Retrieved <span class="nowrap">29 October</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Display%3A+SSU+1%2F2+1976-038C&rft.pub=NASA&rft.date=2020-05-14&rft_id=https%3A%2F%2Fnssdc.gsfc.nasa.gov%2Fnmc%2Fspacecraft%2Fdisplay.action%3Fid%3D1976-038C&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANaval+Ocean+Surveillance+System" class="Z3988"></span> <span class="noviewer" typeof="mw:File"><span><img alt="Public Domain" src="//upload.wikimedia.org/wikipedia/en/thumb/6/62/PD-icon.svg/12px-PD-icon.svg.png" decoding="async" width="12" height="12" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/6/62/PD-icon.svg/18px-PD-icon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/6/62/PD-icon.svg/24px-PD-icon.svg.png 2x" data-file-width="196" data-file-height="196" /></span></span> This article incorporates text from this source, which is in the <a href="/wiki/Public_domain" title="Public domain">public domain</a>.</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.ucsusa.org/resources/satellite-database">"Satellite Database | Union of Concerned Scientists"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Satellite+Database+%26%23124%3B+Union+of+Concerned+Scientists&rft_id=https%3A%2F%2Fwww.ucsusa.org%2Fresources%2Fsatellite-database&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANaval+Ocean+Surveillance+System" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.satobs.org/noss.html">"NOSS Double and Triple Satellite Formations"</a>. <i>satobs.org</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=satobs.org&rft.atitle=NOSS+Double+and+Triple+Satellite+Formations&rft_id=http%3A%2F%2Fwww.satobs.org%2Fnoss.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANaval+Ocean+Surveillance+System" class="Z3988"></span></span> </li> <li id="cite_note-NYT19930804-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-NYT19930804_4-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWeiner1993" class="citation web cs1">Weiner, Tim (4 August 1993). <a rel="nofollow" class="external text" href="https://www.nytimes.com/1993/08/04/us/titan-lost-payload-spy-satellite-system-worth-800-million.html?src=pm">"Titan Lost Payload: Spy-Satellite System Worth $800 Million"</a>. <i>The New York Times</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+New+York+Times&rft.atitle=Titan+Lost+Payload%3A+Spy-Satellite+System+Worth+%24800+Million&rft.date=1993-08-04&rft.aulast=Weiner&rft.aufirst=Tim&rft_id=https%3A%2F%2Fwww.nytimes.com%2F1993%2F08%2F04%2Fus%2Ftitan-lost-payload-spy-satellite-system-worth-800-million.html%3Fsrc%3Dpm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANaval+Ocean+Surveillance+System" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Naval_Ocean_Surveillance_System&action=edit&section=8" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20111011061757/http://www.astronautix.com/craft/noss.htm">NOSS @ astronautix.com</a></li> <li><a rel="nofollow" class="external text" href="https://www.bbc.co.uk/dna/h2g2/A2265815">BBC - h2g2 - Naval Ocean Surveillance Satellites - a 'UFO'</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul 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class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/CORONA_(satellite)" title="CORONA (satellite)">KH-1 Corona</a></li> <li><a href="/wiki/CORONA_(satellite)" title="CORONA (satellite)">KH-2 Corona</a></li> <li><a href="/wiki/CORONA_(satellite)" title="CORONA (satellite)">KH-3 Corona</a></li> <li><a href="/wiki/CORONA_(satellite)" title="CORONA (satellite)">KH-4A Corona</a></li> <li><a href="/wiki/CORONA_(satellite)" title="CORONA (satellite)">KH-4B Corona</a></li> <li><a href="/wiki/KH-5_Argon" title="KH-5 Argon">KH-5 Argon</a></li> <li><a href="/wiki/KH-6_Lanyard" title="KH-6 Lanyard">KH-6 Lanyard</a></li> <li><a href="/wiki/KH-7_Gambit" title="KH-7 Gambit">KH-7 Gambit</a></li> <li><a href="/wiki/KH-8_Gambit_3" title="KH-8 Gambit 3">KH-8 Gambit 3</a></li> <li><a href="/wiki/KH-9_Hexagon" title="KH-9 Hexagon">KH-9 Hexagon</a></li> <li><a href="/wiki/Manned_Orbiting_Laboratory" title="Manned Orbiting Laboratory">KH-10 Dorian</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;line-height:1.2em; font-weight:normal;"><a href="/wiki/Electro-optics" title="Electro-optics">Electro-optical</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Samos_(satellite)" title="Samos (satellite)">Samos</a></li> <li><a href="/wiki/KH-11_KENNEN" title="KH-11 KENNEN">KH-11 Kennen</a></li> <li><a href="/wiki/Misty_(satellite_program)" title="Misty (satellite program)">Misty</a></li> <li><a href="/wiki/Enhanced_Imaging_System" title="Enhanced Imaging System">Enhanced Imaging System</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;line-height:1.2em; font-weight:normal;"><a href="/wiki/Synthetic-aperture_radar" title="Synthetic-aperture radar">Synthetic-aperture radar</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Quill_(satellite)" title="Quill (satellite)">Quill</a></li> <li><a href="/wiki/Lacrosse_(satellite)" title="Lacrosse (satellite)">Lacrosse</a></li> <li><a href="/wiki/Future_Imagery_Architecture" title="Future Imagery Architecture">FIA</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;"><a href="/wiki/Signals_intelligence" title="Signals intelligence">SIGINT</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0;;wide"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;line-height:1.2em; font-weight:normal;"><a href="/wiki/Low_Earth_orbit" title="Low Earth orbit">Low Earth orbit</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Galactic_Radiation_and_Background" title="Galactic Radiation and Background">GRAB</a></li> <li><a href="/wiki/Poppy_(satellite)" title="Poppy (satellite)">Poppy</a></li> <li><a class="mw-selflink selflink">White Cloud</a></li> <li><a href="/wiki/Samos-F" title="Samos-F">Samos-F</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;line-height:1.2em; font-weight:normal;"><a href="/wiki/Highly_elliptical_orbit" title="Highly elliptical orbit">Highly elliptical orbit</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Jumpseat_(satellite)" title="Jumpseat (satellite)">Jumpseat</a></li> <li><a href="/wiki/Trumpet_(satellite)" title="Trumpet (satellite)">Trumpet</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;line-height:1.2em; font-weight:normal;"><a href="/wiki/Geosynchronous_orbit" title="Geosynchronous orbit">Geosynchronous Earth orbit</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Canyon_(satellite)" title="Canyon (satellite)">Canyon</a></li> <li><a href="/wiki/Magnum_(satellite)" title="Magnum (satellite)">Magnum</a></li> <li><a href="/wiki/Orion_(satellite)" title="Orion (satellite)">Mentor (Orion)</a></li> <li><a href="/wiki/Mercury_(satellite)" title="Mercury (satellite)">Mercury</a></li> <li><a href="/wiki/Aquacade_(satellite)" title="Aquacade (satellite)">Rhyolite/Aquacade</a></li> <li><a href="/wiki/Vortex_(satellite)" title="Vortex (satellite)">Vortex</a></li> <li><a href="/wiki/Geosynchronous_Space_Situational_Awareness_Program" title="Geosynchronous Space Situational Awareness Program">GSSAP</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;"><a href="/wiki/Measurement_and_signature_intelligence" title="Measurement and signature intelligence">MASINT</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0;;wide"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;line-height:1.2em; font-weight:normal;">Primary mission</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/FORTE" title="FORTE">FORTE</a></li> <li><a href="/wiki/GPS_satellite_blocks" title="GPS satellite blocks">GPS</a></li> <li><a href="/wiki/Defense_Meteorological_Satellite_Program" title="Defense Meteorological Satellite Program">DMSP</a></li> <li><a href="/wiki/Vela_(satellite)" title="Vela (satellite)">Vela</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;line-height:1.2em; font-weight:normal;">Secondary mission</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Missile_Defense_Alarm_System" title="Missile Defense Alarm System">MIDAS</a></li> <li><a href="/wiki/Defense_Support_Program" title="Defense Support Program">DSP</a></li> <li><a href="/wiki/Space-Based_Infrared_System" title="Space-Based Infrared System">SBIRS</a></li> <li><a href="/wiki/Space_Tracking_and_Surveillance_System" title="Space Tracking and Surveillance System">STSS</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;">R&D</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0;;wide"><tbody><tr><th id="Primary_mission234" scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;line-height:1.2em; font-weight:normal;">Primary mission</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MiTEx" title="MiTEx">MiTEx</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;">Unknown</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div 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