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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Astra 3B</span></h1>
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<div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="de" dir="ltr"><div class="mw-content-ltr mw-parser-output" lang="de" dir="ltr"><table class="infobox wikitable float-right" style="width:25%; min-width:300px; max-width:400px;">

<tbody><tr>
<th colspan="2" class="hintergrundfarbe8" style="font-size: larger">Astra 3B
</th></tr>




<tr>
<td>Betreiber
</td>
<td><a href="SES_Astra" title="SES Astra">SES Astra</a>
</td></tr>

<tr>
<td style="">Startdatum
</td>
<td style="">21. Mai 2010, 22:01 UTC
</td></tr>
<tr>
<td style=""><a href="Tr%C3%A4gerrakete" title="Trägerrakete">Trägerrakete</a>
</td>
<td style="">Ariane 5 ECA
</td></tr>
<tr>
<td style="">Startplatz
</td>
<td style="">Kourou ELA 3
</td></tr>
<tr>
<td style=""><a href="COSPAR-Bezeichnung" title="COSPAR-Bezeichnung">COSPAR‑ID</a>
</td>
<td style=""><a class="external text" href="https://tools.wmflabs.org/magnustools/spacer.php?id=2010-021A">2010-021A</a>
</td></tr>
<tr>
<td style=""><a href="Startgewicht" title="Startgewicht">Startmasse</a>
</td>
<td style="">5472 kg<sup id="cite_ref-astrium.eads_1-0" class="reference"><a href="#cite_note-astrium.eads-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
</td></tr>




<tr>
<td style="">Abmessungen
</td>
<td style="">4,5 × 3,2 × 2,8 m<sup id="cite_ref-arianespace_2-0" class="reference"><a href="#cite_note-arianespace-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</td></tr>
<tr>
<td style="">Spannweite in Umlaufbahn
</td>
<td style="">39,8 m<sup id="cite_ref-arianespace_2-1" class="reference"><a href="#cite_note-arianespace-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</td></tr>


<tr>
<td style=""><a href="Satellitenbus" title="Satellitenbus">Satellitenbus</a>
</td>
<td style="">Eurostar 3000M<sup id="cite_ref-arianespace_2-2" class="reference"><a href="#cite_note-arianespace-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</td></tr>


<tr>
<td style=""><a href="Stabilisierung_(Raumfahrt)" title="Stabilisierung (Raumfahrt)">Stabilisation</a>
</td>
<td style="">dreiachsig
</td></tr>
<tr>
<td style=""><a href="Haltbarkeit_(Technik)" title="Haltbarkeit (Technik)">Lebensdauer</a>
</td>
<td style="">15 Jahre<sup id="cite_ref-arianespace_2-3" class="reference"><a href="#cite_note-arianespace-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</td></tr>



<tr>
<th colspan="2" class="hintergrundfarbe8">Wiedergabeinformation
</th></tr>
<tr>
<td style=""><a href="Transponder_(Satellit)" title="Transponder (Satellit)">Transponder</a>
</td>
<td style="">60 Ku-Band und 4 Ka-Band<sup id="cite_ref-arianespace_2-4" class="reference"><a href="#cite_note-arianespace-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</td></tr>





<tr>
<th colspan="2" class="hintergrundfarbe8">Sonstiges
</th></tr>
<tr>
<td style="">Elektrische Leistung
</td>
<td style="">12 kW EOL<sup id="cite_ref-arianespace_2-5" class="reference"><a href="#cite_note-arianespace-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</td></tr>
<tr>
<td style=""><a href="Akkumulator" title="Akkumulator">Stromspeicher</a>
</td>
<td style="">2 Li-Ion Batterien<sup id="cite_ref-astrium.eads_1-1" class="reference"><a href="#cite_note-astrium.eads-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
</td></tr>


<tr>
<th colspan="2" class="hintergrundfarbe8">Position
</th></tr>


<tr>
<td style="">Aktuelle Position
</td>
<td style="">23,5° Ost
</td></tr>
<tr>
<td style="">Antrieb
</td>
<td style="">Flüssigtreibstoffapogäumsmotor und 10 N Korrekturtriebwerke<sup id="cite_ref-astrium.eads_1-2" class="reference"><a href="#cite_note-astrium.eads-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
</td></tr>


<tr>
<th colspan="2" class="hintergrundfarbe8"><a href="Liste_geostation%C3%A4rer_Satelliten" title="Liste geostationärer Satelliten">Liste geostationärer Satelliten</a>
</th></tr></tbody></table>
<p><b>Astra 3B</b> ist ein Fernsehsatellit des Betreibers SES Astra. Er soll den Satelliten <a href="Astra_3A" title="Astra 3A">Astra 3A</a> auf der Orbitalposition 23,5° Ost ergänzen und die dort ebenfalls positionierten Satelliten Astra 1E und 1G ablösen<sup id="cite_ref-sfn_3-0" class="reference"><a href="#cite_note-sfn-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>.
</p><p>Nachdem Astra 3A seine Dienste an ihn abgegeben hat und die Position verlassen hat, ist er alleine auf 23,5° Ost. Diese Orbitalposition wurde Deutschland zugeteilt und wurde bis 2002 von
den <a href="DFS-Kopernikus" title="DFS-Kopernikus">DFS-Kopernikus</a>-Satelliten genutzt. Weil kein deutscher Satellit sie belegte, drohte nun Deutschland der Verlust der Orbitalposition 23,5°&nbsp;Ost. Die <a href="Deutsche_Telekom" title="Deutsche Telekom">Telekom</a> war an einem eigenen neuen Satelliten nicht interessiert, obwohl Bedarf für einen Kommunikationssatelliten vorhanden war und ist. Deshalb wurde eine Vereinbarung mit der Astra-Betreibergesellschaft geschlossen. Diese sieht den Betrieb eines Astra-Satelliten auf der deutschen Orbitalposition vor, der die dort Deutschland zugeteilten Frequenzen nutzt.
</p><p>Astra 3B wurde von <a href="EADS_Astrium_Satellites" class="mw-redirect" title="EADS Astrium Satellites">EADS Astrium</a> gebaut und basiert auf der Satellitenplattform <a href="Eurostar_E3000" class="mw-redirect" title="Eurostar E3000">Eurostar E3000</a>. Er besitzt 60&nbsp;Transponder im Ku-Band und vier Transponder im Ka-Band. 52&nbsp;Ku-Band Transponder und alle vier Ka-Band Transponder sollen aktiv sein. Die Triebwerke von Astra 3B verwenden als Treibstoff <a href="Monomethylhydrazin" class="mw-redirect" title="Monomethylhydrazin">MMH</a> und den <a href="Oxidator" class="mw-redirect" title="Oxidator">Oxidator</a> <a href="Mixed_Oxides_of_Nitrogen" title="Mixed Oxides of Nitrogen">MON 3</a>.<sup id="cite_ref-astrium.eads_1-3" class="reference"><a href="#cite_note-astrium.eads-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Der Start war für den 9. April 2010 geplant, musste jedoch dreimal verschoben werden, bis er schließlich am 21. Mai erfolgen konnte. Astra 3B wurde mit vier Zündungen seines <a href="Apog%C3%A4umsmotor" title="Apogäumsmotor">Apogäumsmotors</a> in die geostationäre Umlaufbahn gebracht. Hier soll der Satellit bis 2025 stationiert bleiben.<sup id="cite_ref-sfn_3-1" class="reference"><a href="#cite_note-sfn-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Einzelnachweise">Einzelnachweise</h2></div>
<ol class="references">
<li id="cite_note-astrium.eads-1"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-astrium.eads_1-0">a</a></sup> <sup><a href="#cite_ref-astrium.eads_1-1">b</a></sup> <sup><a href="#cite_ref-astrium.eads_1-2">c</a></sup> <sup><a href="#cite_ref-astrium.eads_1-3">d</a></sup></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://forum.nasaspaceflight.com/index.php?action=dlattach;topic=20359.0;attach=208790;sess=57403">Astium Launch Kit</a> für Flug 194</span>
</li>
<li id="cite_note-arianespace-2"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-arianespace_2-0">a</a></sup> <sup><a href="#cite_ref-arianespace_2-1">b</a></sup> <sup><a href="#cite_ref-arianespace_2-2">c</a></sup> <sup><a href="#cite_ref-arianespace_2-3">d</a></sup> <sup><a href="#cite_ref-arianespace_2-4">e</a></sup> <sup><a href="#cite_ref-arianespace_2-5">f</a></sup></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.arianespace.com/wp-content/uploads/2017/05/V194-ASTRA-3B-COMSATBw-new-en-1.pdf">Arianespace-Launchkit</a> für Flug 194</span>
</li>
<li id="cite_note-sfn-3"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-sfn_3-0">a</a></sup> <sup><a href="#cite_ref-sfn_3-1">b</a></sup></span> <span class="reference-text">Stephen Clark: <i><a rel="nofollow" class="external text" href="http://www.spaceflightnow.com/ariane/v194/100521launch/">Ariane 5 breaks five-month hiatus with successful launch</a>.</i></span>
</li>
</ol>
<div class="mw-heading mw-heading2"><h2 id="Weblinks">Weblinks</h2></div>
<ul><li>SES: <a rel="nofollow" class="external text" href="http://www.ses.com/4628740/astra-3b">ASTRA 3B</a> (englisch)</li>
<li>Gunter’s Space Page: <a rel="nofollow" class="external text" href="http://space.skyrocket.de/doc_sdat/astra-3b.htm">Astra 3B</a> (englisch)</li>
<li>Lyngsat: <a rel="nofollow" class="external text" href="http://www.lyngsat.com/Astra-3B.html">Astra 3B at 23.5°E</a> (englisch)</li></ul>
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<div class="klappleiste-kopf"><a href="SES_Astra" title="SES Astra">Astra</a>-Satelliten</div>
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<p><a href="Astra_1N" title="Astra 1N">1N</a>&nbsp;·
<a href="Astra_1P" title="Astra 1P">1P</a>&nbsp;·
<a href="Astra_2A" title="Astra 2A">2A</a>&nbsp;·
<a href="Astra_2B" title="Astra 2B">2B</a>&nbsp;·
<a href="Astra_2C" title="Astra 2C">2C</a>&nbsp;·
<a href="Astra_2E" title="Astra 2E">2E</a>&nbsp;·
<a href="Astra_2F" title="Astra 2F">2F</a>&nbsp;·
<a href="Astra_2G" title="Astra 2G">2G</a>&nbsp;·
<a href="Astra_3A" title="Astra 3A">3A</a>&nbsp;·
<a class="mw-selflink selflink">3B</a>&nbsp;·
<a href="Astra_4A" title="Astra 4A">4A</a> <small>(ab 2010)</small>&nbsp;·
<a href="AMC-12" class="mw-redirect" title="AMC-12">4A</a> <small>(ab 2005)</small>&nbsp;·
<a href="SES-5" title="SES-5">4B</a>&nbsp;·
<a href="Astra_5B" title="Astra 5B">5B</a>&nbsp;
</p><p><i>zukünftige Satelliten:</i>
<a href="Astra_1Q" class="mw-redirect" title="Astra 1Q">1Q</a>&nbsp;
</p><p><i>leere Satelliten:</i>
<a href="Astra_1KR" title="Astra 1KR">1KR</a>&nbsp;·
<a href="Astra_1L" title="Astra 1L">1L</a>&nbsp;·
<a href="Astra_1M" title="Astra 1M">1M</a>&nbsp;
</p><p><i>im Friedhofsorbit:</i>
<a href="Astra_1A" title="Astra 1A">1A</a>&nbsp;·
<a href="Astra_1B" title="Astra 1B">1B</a>&nbsp;·
<a href="Astra_1C" title="Astra 1C">1C</a>&nbsp;·
<a href="Astra_1D" title="Astra 1D">1D</a>&nbsp;·
<a href="Astra_1E" title="Astra 1E">1E</a>&nbsp;·
<a href="Astra_1F" title="Astra 1F">1F</a>&nbsp;·
<a href="Astra_1G" title="Astra 1G">1G</a>&nbsp;·
<a href="Astra_1H" title="Astra 1H">1H</a>&nbsp;·
<a href="Astra_2D" title="Astra 2D">2D</a>&nbsp;·
<a href="Astra_5A" title="Astra 5A">5A</a>&nbsp;
</p><p><i>Fehlstarts:</i> <a href="Astra_1K" title="Astra 1K">1K</a>
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<div class="klappleiste-kopf">Satelliten der <a href="SES_S.A." title="SES S.A.">SES S.A.</a></div>
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<td class="erw-nav-gruppe" style="white-space: nowrap;text-align: right;border: 1px solid transparent;border-top: 1px solid #FFF;border-bottom: 2px solid #FFF;padding: 0 1em;"><b><a href="SES_(Satellit)" title="SES (Satellit)">SES-Flotte</a></b>
</td>
<td class="hlist" style="text-align: left;border-left: 2px solid #fdfdfd;width: 100%;margin: .4em 0;border-color: #fdfdfd;padding: 0 .25em;">
<p><b><a href="SES-1" title="SES-1">SES-1</a></b> • <b><a href="SES-2" title="SES-2">SES-2</a></b> • <b><a href="SES-3" title="SES-3">SES-3</a></b> • <b><a href="SES-4" title="SES-4">SES-4</a></b> • <b><a href="SES-5" title="SES-5">SES-5</a></b> • <b><a href="SES-6" title="SES-6">SES-6</a></b> • <b><a href="SES-7" title="SES-7">SES-7</a></b> • <b><a href="SES-8" title="SES-8">SES-8</a></b> • <b><a href="SES-9" title="SES-9">SES-9</a></b> • <b><a href="SES-10" title="SES-10">SES-10</a></b> • <b><a href="SES-11" class="mw-redirect" title="SES-11">SES-11</a></b> • <b><a href="SES-12" title="SES-12">SES-12</a></b> • <b><a href="SES-14" title="SES-14">SES-14</a></b> • <b><a href="SES-15" title="SES-15">SES-15</a></b> • <b><a href="GovSat-1" title="GovSat-1">SES-16</a></b> • <b><a href="SES-17" title="SES-17">SES-17</a></b> • <b><a href="SES-18" title="SES-18">SES-18</a></b> • <b><a href="SES-19" title="SES-19">SES-19</a></b> • <b><a href="SES-20" title="SES-20">SES-20</a></b> • <b><a href="SES-21" title="SES-21">SES-21</a></b> • <b><a href="SES-22" title="SES-22">SES-22</a></b> • <i>SES-23</i> • <b><a href="SES-24" class="mw-redirect" title="SES-24">SES-24</a></b> • <i>SES-26</i>
</p>
</td></tr>
<tr>
<td class="erw-nav-gruppe" style="white-space: nowrap;text-align: right;border: 1px solid transparent;border-top: 1px solid #FFF;border-bottom: 2px solid #FFF;padding: 0 1em;"><b><a href="SES_World_Skies#AMC-Flotte" title="SES World Skies">AMC-Flotte</a></b>
</td>
<td class="hlist" style="text-align: left;border-left: 2px solid #fdfdfd;width: 100%;margin: .4em 0;border-color: #fdfdfd;padding: 0 .25em;">
<p><a href="AMC-1" title="AMC-1">AMC-1</a> • <a href="AMC-2" title="AMC-2">AMC-2</a> • <a href="Eagle_1" title="Eagle 1">AMC-3</a> • <a href="AMC-4" title="AMC-4">AMC-4</a> • <a href="AMC-5" title="AMC-5">AMC-5</a> • <b><a href="AMC-6" title="AMC-6">AMC-6</a></b> • <a href="AMC-7" title="AMC-7">AMC-7</a> • <a href="AMC-8" title="AMC-8">AMC-8</a> • <a href="AMC-9" title="AMC-9">AMC-9</a> • <a href="AMC-10" title="AMC-10">AMC-10</a> • <b><a href="AMC-11" title="AMC-11">AMC-11</a></b> • <a href="AMC-14" title="AMC-14">AMC-14</a> • <b><a href="AMC-15" title="AMC-15">AMC-15</a></b> • <a href="AMC-16" title="AMC-16">AMC-16</a> • <a href="AMC-18" title="AMC-18">AMC-18</a> • <b><a href="AMC-21" title="AMC-21">AMC-21</a></b>
</p>
</td></tr>
<tr>
<td class="erw-nav-gruppe" style="white-space: nowrap;text-align: right;border: 1px solid transparent;border-top: 1px solid #FFF;border-bottom: 2px solid #FFF;padding: 0 1em;"><b><a href="SES_World_Skies#NSS-Flotte" title="SES World Skies">NSS-Flotte</a></b>
</td>
<td class="hlist" style="text-align: left;border-left: 2px solid #fdfdfd;width: 100%;margin: .4em 0;border-color: #fdfdfd;padding: 0 .25em;">
<p><a href="NSS-5" title="NSS-5">NSS-5</a> • <a href="NSS-6" title="NSS-6">NSS-6</a> • <a href="NSS-7" title="NSS-7">NSS-7</a> • <a href="NSS-8" title="NSS-8">NSS-8</a> • <b><a href="NSS-9" title="NSS-9">NSS-9</a></b> • <b><a href="NSS-10" title="NSS-10">NSS-10</a></b> • <b><a href="NSS-11" title="NSS-11">NSS-11</a></b> • <b><a href="NSS-12" title="NSS-12">NSS-12</a></b> • <a href="NSS-513" title="NSS-513">NSS-513</a> • <a href="NSS-703" title="NSS-703">NSS-703</a> • <a href="NSS-806" title="NSS-806">NSS-806</a> • <a href="NSS-K" title="NSS-K">NSS-K</a>
</p>
</td></tr>
<tr>
<td class="erw-nav-gruppe" style="white-space: nowrap;text-align: right;border: 1px solid transparent;border-top: 1px solid #FFF;border-bottom: 1px solid #FFF;padding: 0 1em;"><b><a href="SES_Astra" title="SES Astra">Astra-Flotte</a></b>
</td>
<td class="hlist" style="text-align: left;border-left: 2px solid #fdfdfd;width: 100%;margin: .4em 0;border-color: #fdfdfd;padding: 0 .25em;">
<p><a href="Astra_1A" title="Astra 1A">Astra 1A</a> • <a href="Astra_1B" title="Astra 1B">Astra 1B</a> • <a href="Astra_1C" title="Astra 1C">Astra 1C</a> • <a href="Astra_1D" title="Astra 1D">Astra 1D</a> • <a href="Astra_1E" title="Astra 1E">Astra 1E</a> • <a href="Astra_1F" title="Astra 1F">Astra 1F</a> • <a href="Astra_1G" title="Astra 1G">Astra 1G</a> • <a href="Astra_1H" title="Astra 1H">Astra 1H</a> • <a href="Astra_1K" title="Astra 1K">Astra 1K</a> • <a href="Astra_1KR" title="Astra 1KR">Astra 1KR</a> • <a href="Astra_1L" title="Astra 1L">Astra 1L</a> • <a href="Astra_1M" title="Astra 1M">Astra 1M</a> • <b><a href="Astra_1N" title="Astra 1N">Astra 1N</a></b> • <b><a href="Astra_1P" title="Astra 1P">Astra 1P</a></b> • <i><a href="Astra_1Q" class="mw-redirect" title="Astra 1Q">Astra 1Q</a></i> • <a href="Astra_2A" title="Astra 2A">Astra 2A</a> • <a href="Astra_2B" title="Astra 2B">Astra 2B</a> • <a href="Astra_2C" title="Astra 2C">Astra 2C</a> • <a href="Astra_2D" title="Astra 2D">Astra 2D</a> • <b><a href="Astra_2E" title="Astra 2E">Astra 2E</a></b> • <b><a href="Astra_2F" title="Astra 2F">Astra 2F</a></b> • <b><a href="Astra_2G" title="Astra 2G">Astra 2G</a></b> • <a href="Astra_3A" title="Astra 3A">Astra 3A</a> • <b><a class="mw-selflink selflink">Astra 3B</a></b> • <b><a href="Astra_4A" title="Astra 4A">Astra 4A</a></b> • <b><a href="Astra_4B" class="mw-redirect" title="Astra 4B">Astra 4B</a></b> • <a href="Astra_5A" title="Astra 5A">Astra 5A</a> • <b><a href="Astra_5B" title="Astra 5B">Astra 5B</a></b>
</p>
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</tbody></table><div class="erw-nav-leiste" style="margin:.1em 0;padding:.1em 1em;text-align:left;font-size:90%;"><b>Fette</b> Satelliten sind aktiv, <i>kursive</i> sind in Planung. </div></div></div>
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