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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">(54509) YORP</span></h1>
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<table aria-label="Kenndaten des Asteroiden" class="wikitable infobox float-right ibtable" id="Vorlage_Infobox_Asteroid">
<tbody><tr>
<th colspan="2" class="ibheader"><a href="Asteroid" title="Asteroid">Asteroid</a><br>(54509) YORP
</th></tr>
<tr>
<td colspan="2" class="ibimage notheme"><span typeof="mw:File"></span>
</td></tr>
<tr>
<td colspan="2" class="ibimgtxt notheme">Radarbild und 3D-Model
</td></tr>
<tr style="display:none;">
<td colspan="2" class="ibimage notheme">{{{Bild2}}}
</td></tr>
<tr style="display:none;">
<td colspan="2" class="ibimgtxt notheme">{{{Bildtext2}}}
</td></tr>
<tr>
<th colspan="2" class="ibheader"><a href="Bahnelement" title="Bahnelement">Eigenschaften</a> des <a href="Umlaufbahn" title="Umlaufbahn">Orbits</a> <span style="font-weight:normal;"><i><a rel="nofollow" class="external text" href="https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=54509&view=VOSPDCA">Animation</a></i></span><div style="font-size:85%;"><a href="Epoche_(Astronomie)" title="Epoche (Astronomie)">Epoche:</a> 23. Mai 2014 (<a href="Julianisches_Datum" title="Julianisches Datum">JD</a> 2.456.800,5)
</div>
</th></tr>
<tr>
<td class="ibleft">Orbittyp
</td>
<td><a href="Erdnaher_Asteroid#Apollo-Typ" title="Erdnaher Asteroid">Apollo-Typ</a>
</td></tr>
<tr style="display:none;">
<td class="ibleft">Asteroidenfamilie
</td>
<td>
</td></tr>
<tr>
<td class="ibleft"><a href="Halbachsen_der_Ellipse" title="Halbachsen der Ellipse">Große Halbachse</a>
</td>
<td class="ibnowrap">1,006 <a href="Astronomische_Einheit" title="Astronomische Einheit">AE</a>
</td></tr>
<tr>
<td class="ibleft"><a href="Exzentrizit%C3%A4t_(Astronomie)" title="Exzentrizität (Astronomie)">Exzentrizität</a>
</td>
<td class="ibnowrap">0,230
</td></tr>
<tr style="display:none;">
<td class="ibleft"><a href="Apsis_(Astronomie)" title="Apsis (Astronomie)">Perihel – Aphel</a>
</td>
<td class="ibnowrap">NaN AE – NaN AE
</td></tr>
<tr>
<td class="ibleft"><a href="Apsis_(Astronomie)" title="Apsis (Astronomie)">Perihel – Aphel</a>
</td>
<td class="ibnowrap">0,7746 AE – 1,2374 AE
</td></tr>
<tr>
<td class="ibleft"><a href="Bahnneigung" title="Bahnneigung">Neigung der Bahnebene</a>
</td>
<td class="ibnowrap">1,600°
</td></tr>
<tr style="display:none;">
<td class="ibleft"><a href="L%C3%A4nge_des_aufsteigenden_Knotens" title="Länge des aufsteigenden Knotens">Länge des aufsteigenden Knotens</a>
</td>
<td class="ibnowrap">{{{Knoten}}}°
</td></tr>
<tr style="display:none;">
<td class="ibleft"><a href="Argument_der_Periapsis" title="Argument der Periapsis">Argument der Periapsis</a>
</td>
<td class="ibnowrap">{{{Periwinkel}}}°
</td></tr>
<tr style="display:none;">
<td class="ibleft">Zeitpunkt des Periheldurchgangs
</td>
<td>
</td></tr>
<tr style="display:none;">
<td class="ibleft"><a href="Siderische_Periode" title="Siderische Periode">Siderische Umlaufperiode</a>
</td>
<td class="ibnowrap">{{{Periode}}}
</td></tr>
<tr>
<td class="ibleft"><a href="Siderische_Periode" title="Siderische Periode">Siderische Umlaufzeit</a>
</td>
<td class="ibnowrap">368,218 <a href="Tag" title="Tag">d</a>
</td></tr>
<tr>
<td class="ibleft">Mittlere <a href="Bahngeschwindigkeit_(Astronomie)" title="Bahngeschwindigkeit (Astronomie)">Orbitalgeschwindigkeit</a>
</td>
<td class="ibnowrap">29,31 km/s
</td></tr>
<tr style="display:none;">
<td class="ibleft">Mittlere <a href="Bahngeschwindigkeit_(Astronomie)" title="Bahngeschwindigkeit (Astronomie)">Orbitalgeschwindigkeit</a>
</td>
<td class="ibnowrap">-4,74 km/s
</td></tr>
<tr>
<td colspan="2" class="ibheader">Physikalische Eigenschaften
</td></tr>
<tr>
<td class="ibleft">Mittlerer <a href="Durchmesser" title="Durchmesser">Durchmesser</a>
</td>
<td class="ibnowrap">0,150 km
</td></tr>
<tr style="display:none;">
<td class="ibleft">Abmessungen
</td>
<td class="ibnowrap">{{{Abmessungen}}}
</td></tr>
<tr style="display:none;">
<td class="ibleft"><a href="Masse_(Physik)" title="Masse (Physik)">Masse</a>
</td>
<td class="ibnowrap"><span style="display:none;">Vorlage:Infobox Asteroid/Wartung/Masse</span> kg
</td></tr>
<tr style="display:none;">
<td class="ibleft"><a href="Albedo" title="Albedo">Albedo</a>
</td>
<td class="ibnowrap">
</td></tr>
<tr style="display:none;">
<td class="ibleft">Mittlere <a href="Dichte" title="Dichte">Dichte</a>
</td>
<td class="ibnowrap">g/cm³
</td></tr>
<tr style="display:none;">
<td class="ibleft">Rotationsperiode
</td>
<td class="ibnowrap">
</td></tr>
<tr>
<td class="ibleft"><a href="Absolute_Helligkeit" title="Absolute Helligkeit">Absolute Helligkeit</a>
</td>
<td class="ibnowrap">22,7 mag
</td></tr>
<tr style="display:none;">
<td class="ibleft"><a href="Asteroid#Klassifikationsschemata_von_Asteroiden" title="Asteroid">Spektralklasse</a>
</td>
<td class="ibnowrap">
</td></tr>
<tr style="display:none;">
<td class="ibleft"><a href="Asteroid#Klassifikationsschemata_von_Asteroiden" title="Asteroid">Spektralklasse</a><br><small>(nach <a href="Tholen_(Klassifikation)" class="mw-redirect" title="Tholen (Klassifikation)">Tholen</a>)</small>
</td>
<td class="ibnowrap">{{{Tholen}}}
</td></tr>
<tr style="display:none;">
<td class="ibleft"><a href="Asteroid#Klassifikationsschema_nach_Tholen" title="Asteroid">Spektralklasse</a><br><small>(nach <a href="https://en.wikipedia.org/wiki/Asteroid_spectral_types" class="extiw external" title="en:Asteroid spectral types">SMASSII</a>)</small>
</td>
<td class="ibnowrap">{{{Smass}}}
</td></tr>
<tr>
<td colspan="2" class="ibheader">Geschichte
</td></tr>
<tr>
<td class="ibleft">Entdecker
</td>
<td><a href="Lincoln_Near_Earth_Asteroid_Research" title="Lincoln Near Earth Asteroid Research">LINEAR</a>
</td></tr>
<tr>
<td class="ibleft">Datum der Entdeckung
</td>
<td class="ibnowrap">3. August 2000
</td></tr>
<tr>
<td class="ibleft"><a href="Benennung_von_Asteroiden_und_Kometen" title="Benennung von Asteroiden und Kometen">Andere Bezeichnung</a>
</td>
<td>2000 PH<sub>5</sub>
</td></tr>
<tr>
<td colspan="2" class="ibsource"><b>Quelle:</b> Wenn nicht einzeln anders angegeben, stammen die Daten vom <a rel="nofollow" class="external text" href="https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=54509&view=VOSPDCA">JPL Small-Body Database</a>. Die Zugehörigkeit zu einer Asteroidenfamilie wird automatisch aus der <a rel="nofollow" class="external text" href="https://newton.spacedys.com/astdys/">AstDyS-2 Datenbank</a> ermittelt. Bitte auch den Hinweis zu Asteroidenartikeln beachten.
</td></tr></tbody></table><div style="display:none;">Vorlage:Infobox Asteroid/Wartung/Umlaufdauer</div>
<p><b>(54509) YORP</b> ist ein <a href="Erdnaher_Asteroid" title="Erdnaher Asteroid">erdnaher Asteroid</a>, der am 3. August 2000 vom Team des <a href="Lincoln_Near_Earth_Asteroid_Research" title="Lincoln Near Earth Asteroid Research">Lincoln-Institut zur Erforschung erdnaher Asteroiden</a> in <a href="Socorro_(New_Mexico)" title="Socorro (New Mexico)">Socorro</a> entdeckt wurde. Durch Messungen der Rotationsrate dieses Asteroiden konnte zum ersten Mal der <a href="YORP-Effekt" title="YORP-Effekt">YORP-Effekt</a> beobachtet und bewiesen werden.
Durch ihn steigt die Rotationsgeschwindigkeit des Asteroiden um 2,0 (±0,2) × 10⁻⁴ deg/day².<sup id="cite_ref-spin-rate_1-0" class="reference"><a href="#cite_note-spin-rate-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
Simulationen des Asteroiden legen nahe, dass er sich in den nächsten 35 Millionen Jahren in einer stabilen <a href="Umlaufbahn" title="Umlaufbahn">Umlaufbahn</a> um die <a href="Sonne" title="Sonne">Sonne</a> befinden wird. Bis dahin wird er eine Rotationsperiode von etwa 20 Sekunden erreicht haben. Die Kräfte, die bei dieser außerordentlich hohen Rotationsgeschwindigkeit auftreten, können dann dazu führen, dass sich die Form des Asteroiden ändert oder dass er dadurch zerbricht.<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> Die Simulationen schlossen zudem aus, dass sich der Anstieg der Rotationsperiode durch die Nähe der Vorbeiflüge an der Erde erklären lässt.<sup id="cite_ref-direct_3-0" class="reference"><a href="#cite_note-direct-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Siehe_auch">Siehe auch</h2></div>
<ul><li><a href="Liste_der_Asteroiden" title="Liste der Asteroiden">Liste der Asteroiden</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Literatur">Literatur</h2></div>
<ul><li>Michael Mueller: <cite style="font-style:italic">Oberflächeneigenschaften von Asteroiden Beobachtungen im mittleren Infrarot und thremophysikalische Modellierung</cite>. In: <cite style="font-style:italic">Doctoral Dissertation</cite>. 2007 (<a rel="nofollow" class="external text" href="https://www.diss.fu-berlin.de/diss/servlets/MCRFileNodeServlet/FUDISS_derivate_000000002596/">fu-berlin.de</a>).<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rfr_id=info:sid/de.wikipedia.org:%2854509%29+YORP&rft.atitle=Oberfl%C3%A4cheneigenschaften+von+Asteroiden+Beobachtungen+im+mittleren+Infrarot+und+thremophysikalische+Modellierung&rft.au=Michael%26%2332%3BMueller&rft.btitle=Doctoral+Dissertation&rft.date=2007&rft.genre=book" style="display:none"> </span></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Einzelnachweise">Einzelnachweise</h2></div>
<ol class="references">
<li id="cite_note-spin-rate-1"><span class="mw-cite-backlink"><a href="#cite_ref-spin-rate_1-0">↑</a></span> <span class="reference-text">Patrick A. Taylor, <i>et al.</i>: <cite style="font-style:italic">Spin Rate of Asteroid (54509) 2000 PH5 Increasing Due to the YORP Effect</cite>. In: <cite style="font-style:italic"><a href="Science" title="Science">Science</a></cite>. 316. Jahrgang, <span style="white-space:nowrap">Nr.<span style="display:inline-block;width:.2em"> </span>5822</span>, 13. April 2007, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>274–277</span>, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1126/science.1139038">10.1126/science.1139038</a></span> (<a rel="nofollow" class="external text" href="http://www.astro.cornell.edu/~jlm/publications/Taylor07.science316.yorp.pdf">cornell.edu</a> [PDF]).<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rfr_id=info:sid/de.wikipedia.org:%2854509%29+YORP&rft.atitle=Spin+Rate+of+Asteroid+%2854509%29+2000+PH5+Increasing+Due+to+the+YORP+Effect&rft.au=Patrick+A.%26%2332%3BTaylor%2C%26%2332%3Bet+al.&rft.date=2007-04-13&rft.doi=10.1126%2Fscience.1139038&rft.genre=journal&rft.issue=5822&rft.jtitle=Science&rft.pages=274-277&rft.volume=316.+Jahrgang" style="display:none"> </span></span>
</li>
<li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><span class="cite"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20180420074645/http://www.ing.iac.es:8080/PR/press/yorp.html"><i>The YORP Effect Detected on Near-Earth Asteroid 2000 PH5.</i></a> Archiviert vom <style data-mw-deduplicate="TemplateStyles:r250917974">
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</style><span class="dewiki-iconexternal"><a class="external text" href="https://redirecter.toolforge.org/?url=http%3A%2F%2Fwww.ing.iac.es%3A8080%2FPR%2Fpress%2Fyorp.html">Original</a></span> am <span style="white-space:nowrap;">20. April 2018</span><span>;</span><span class="Abrufdatum"> abgerufen am 14. Januar 2015</span>.</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2Fde.wikipedia.org%3A%2854509%29+YORP&rft.title=The+YORP+Effect+Detected+on+Near-Earth+Asteroid+2000+PH5&rft.description=The+YORP+Effect+Detected+on+Near-Earth+Asteroid+2000+PH5&rft.identifier=https%3A%2F%2Fweb.archive.org%2Fweb%2F20180420074645%2Fhttp%3A%2F%2Fwww.ing.iac.es%3A8080%2FPR%2Fpress%2Fyorp.html&rft.date=&rft.source=http://www.ing.iac.es:8080/PR/press/yorp.html"> </span></span>
</li>
<li id="cite_note-direct-3"><span class="mw-cite-backlink"><a href="#cite_ref-direct_3-0">↑</a></span> <span class="reference-text">Stephen C. Lowry, <i>et al.</i>: <cite style="font-style:italic">Direct Detection of the Asteroidal YORP Effect</cite>. In: <cite style="font-style:italic"><a href="Science" title="Science">Science</a></cite>. 316. Jahrgang, <span style="white-space:nowrap">Nr.<span style="display:inline-block;width:.2em"> </span>5822</span>, 13. April 2007, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>272–274</span>, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1126/science.1139040">10.1126/science.1139040</a></span>, <a class="external mw-magiclink-pmid" rel="nofollow" href="https://www.ncbi.nlm.nih.gov/pubmed/17347414?dopt=Abstract">PMID 17347414</a>, <a href="Bibcode" title="Bibcode">bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2007Sci...316..272L">2007Sci...316..272L</a> (<a rel="nofollow" class="external text" href="https://web.archive.org/web/20121014221852/http://star.pst.qub.ac.uk/comast/papers/YORP1.pdf">star.pst.qub.ac.uk</a> (<span class="webarchiv-memento"><a href="Webarchivierung#Begrifflichkeiten" title="Webarchivierung">Memento</a></span> des <span class="dewiki-iconexternal"><a class="external text" href="https://redirecter.toolforge.org/?url=http%3A%2F%2Fstar.pst.qub.ac.uk%2Fcomast%2Fpapers%2FYORP1.pdf">Originals</a></span> vom 14. Oktober 2012 im <i><a href="Internet_Archive" title="Internet Archive">Internet Archive</a></i>)).<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rfr_id=info:sid/de.wikipedia.org:%2854509%29+YORP&rft.atitle=Direct+Detection+of+the+Asteroidal+YORP+Effect&rft.au=Stephen+C.%26%2332%3BLowry%2C%26%2332%3Bet+al.&rft.date=2007-04-13&rft.doi=10.1126%2Fscience.1139040&rft.genre=journal&rft.issue=5822&rft.jtitle=Science&rft.pages=272-274&rft.pmid=17347414&rft.volume=316.+Jahrgang" style="display:none"> </span></span>
</li>
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