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<title>M23 (astronomia)</title>
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<wx:section level="1" title="M23 (astronomia)" id="wxsec1"><h1 class="pagetitle" id="wx1">M23 (astronomia)</h1>

<wx:template id="wx_t1" pagename="Template:Ammasso" page_id="311595"/>
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<th style="background-color: #FFFF77;" colspan="2" id="wx7">
<p id="wx8"><b id="wx9">M23</b></p>
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<tr id="wx10">
<td colspan="2" align="center" id="wx11"><a href="/wit/Immagine:Messier_object_023.jpg" title="M23" wx:linktype="image" wx:pagename="Immagine:Messier_object_023.jpg" id="wx12"><img src="/wit/Immagine:Messier_object_023.jpg" alt="M23" width="280" id="wx13"/></a> </td>
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<th colspan="2" style="background-color: #FFFF77;" id="wx15">
<p id="wx16">Scoperta</p>
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<tr id="wx17">
<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx18"><b id="wx19">Scopritore</b> </th>
<td id="wx20"><a href="/wit/Charles_Messier" title="Charles Messier" wx:linktype="known" wx:pagename="Charles_Messier" wx:page_id="1479" id="wx21">Charles Messier</a> </td>
</tr>

<tr id="wx22">
<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx23"><b id="wx24">Anno</b> </th>
<td id="wx25"><a href="/wit/1764" title="1764" wx:linktype="known" wx:pagename="1764" wx:page_id="5546" id="wx26">1764</a> </td>
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<tr id="wx27">
<th colspan="2" style="background-color: #FFFF77;" id="wx28">
<p id="wx29">Dati osservativi<br id="wx30"/>
<small id="wx31">(<a href="/wit/Epoca_%28astronomia%29" title="Epoca (astronomia)" wx:linktype="known" wx:pagename="Epoca_(astronomia)" wx:page_id="17183" id="wx32">Epoca</a>J2000.0)</small></p>
</th>
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<tr id="wx33">
<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx34"><b id="wx35"><a href="/wit/Costellazione" title="Costellazione" wx:linktype="known" wx:pagename="Costellazione" wx:page_id="9574" id="wx36">Costellazione</a></b> </th>
<td id="wx37"><a href="/wit/Sagittario_%28astronomia%29" title="Sagittario (astronomia)" wx:linktype="known" wx:pagename="Sagittario_(astronomia)" wx:page_id="557231" id="wx38">Sagittario</a> </td>
</tr>

<tr id="wx39">
<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx40"><b id="wx41">Tipo di oggetto</b> </th>
<td id="wx42"><a href="/wit/Ammasso_aperto" title="Ammasso aperto" wx:linktype="known" wx:pagename="Ammasso_aperto" wx:page_id="550" id="wx43">Ammasso aperto</a> </td>
</tr>

<tr id="wx44">
<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx45"><b id="wx46">Classe</b> </th>
<td id="wx47">
<p id="wx48">I,2,r</p>
</td>
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<tr id="wx49">
<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx50"><b id="wx51"><a href="/wit/Ascensione_retta" title="Ascensione retta" wx:linktype="known" wx:pagename="Ascensione_retta" wx:page_id="10973" id="wx52">Ascensione retta</a></b> </th>
<td id="wx53">
<p id="wx54">17<sup id="wx55">h</sup> 56.8<sup id="wx56">m</sup></p>
</td>
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<tr id="wx57">
<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx58"><b id="wx59"><a href="/wit/Declinazione_%28astronomia%29" title="Declinazione (astronomia)" wx:linktype="known" wx:pagename="Declinazione_(astronomia)" wx:page_id="10971" id="wx60">Declinazione</a></b> </th>
<td id="wx61">
<p id="wx62">−19° 01′</p>
</td>
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<tr id="wx63">
<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx64"><b id="wx65">Distanza</b> </th>
<td id="wx66">
<p id="wx67">2150 <a href="/wit/Anno_luce" title="Anno luce" wx:linktype="known" wx:pagename="Anno_luce" wx:page_id="342" id="wx68">a.l.</a> (659 <a href="/wit/Parsec" title="Parsec" wx:linktype="known" wx:pagename="Parsec" wx:page_id="1471541" id="wx69">pc</a>)</p>
</td>
</tr>

<tr id="wx70">
<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx71"><b id="wx72"><a href="/wit/Magnitudine_apparente" title="Magnitudine apparente" wx:linktype="known" wx:pagename="Magnitudine_apparente" wx:page_id="2941" id="wx73">Magnitudine apparente</a> <small id="wx74">(V)</small></b> </th>
<td id="wx75">
<p id="wx76">6.9</p>
</td>
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<tr class="hiddenStructure noprint" id="wx77">
<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx78"><b id="wx79"><a href="/wit/Dimensione_apparente" title="Dimensione apparente" wx:linktype="known" wx:pagename="Dimensione_apparente" wx:page_id="503783" id="wx80">Dimensioni apparenti</a> <small id="wx81">(V)</small></b> </th>
<td id="wx82">
<p id="wx83">27.0′</p>
</td>
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<tr id="wx84">
<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx85"><b id="wx86"><a href="/wit/Dimensione_apparente" title="Dimensione apparente" wx:linktype="known" wx:pagename="Dimensione_apparente" wx:page_id="503783" id="wx87">Dimensioni apparenti</a> <small id="wx88">(V)</small></b> </th>
<td id="wx89">
<p id="wx90">27.0′</p>
</td>
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<tr id="wx91">
<th width="50%" style="text-align:left;background-color: #FFFF77;" colspan="2" id="wx92">
<p id="wx93">Caratteristiche fisiche</p>
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<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx95"><b id="wx96">Raggio</b> </th>
<td id="wx97">
<p id="wx98">8 <a href="/wit/Anno_luce" title="Anno luce" wx:linktype="known" wx:pagename="Anno_luce" wx:page_id="342" id="wx99">al</a></p>
</td>
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<tr id="wx100">
<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx101"><b id="wx102">Età stimata</b> </th>
<td id="wx103">
<p id="wx104">220-300 milioni di anni</p>
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<th width="50%" style="text-align:left;background:#FFFFD0;" id="wx106"><b id="wx107">Caratteristiche notevoli</b> </th>
<td id="wx108">
<p id="wx109">–</p>
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<tr id="wx110">
<th colspan="2" style="background-color: #FFFF77;" id="wx111"><b id="wx112">Altre designazioni</b> </th>
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<tr id="wx113">
<td colspan="2" style="text-align:center;" id="wx114">
<p id="wx115">NGC 6494</p>
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<p id="wx116"><b id="wx117">M23</b> (conosciuto anche come <b id="wx118">Messier 23</b> o <b id="wx119">NGC 6494</b>) è un <a href="/wit/Ammasso_aperto" title="Ammasso aperto" wx:linktype="known" wx:pagename="Ammasso_aperto" wx:page_id="550" id="wx120">ammasso aperto</a> nella <a href="/wit/Costellazione" title="Costellazione" wx:linktype="known" wx:pagename="Costellazione" wx:page_id="9574" id="wx121">costellazione</a> del <a href="/wit/Sagittario_%28astronomia%29" title="Sagittario (astronomia)" wx:linktype="known" wx:pagename="Sagittario_(astronomia)" wx:page_id="557231" id="wx122">Sagittario</a>.</p>

<p id="wx123">Fu scoperto da <a href="/wit/Charles_Messier" title="Charles Messier" wx:linktype="known" wx:pagename="Charles_Messier" wx:page_id="1479" id="wx124">Charles Messier</a> il <a href="/wit/20_giugno" title="20 giugno" wx:linktype="known" wx:pagename="20_giugno" wx:page_id="5130" id="wx125">20 giugno</a> <a href="/wit/1764" title="1764" wx:linktype="known" wx:pagename="1764" wx:page_id="5546" id="wx126">1764</a> che lo descrive così: <i id="wx127">"Un ammasso di stelle molto vicino a 65 Ophiuchi...Diam. 15'..."</i></p>

<a id="Caratteristiche" name="Caratteristiche"/>
<wx:section level="2" title="Caratteristiche" id="wxsec2"><h2 id="wx128">Caratteristiche</h2>

<p id="wx129">M23 si trova alla distanza di circa 2.150 <a href="/wit/Anno_luce" title="Anno luce" wx:linktype="known" wx:pagename="Anno_luce" wx:page_id="342" id="wx130">anni luce</a> dalla <a href="/wit/Terra" title="Terra" wx:linktype="known" wx:pagename="Terra" wx:page_id="4215" id="wx131">Terra</a>; il suo diametro si aggira intorno ai 15-20 anni luce.</p>

<p id="wx132">All'interno dell'ammasso sono stati identificati circa 150 membri. Le sue <a href="/wit/Stella" title="Stella" wx:linktype="known" wx:pagename="Stella" wx:page_id="103869" id="wx133">stelle</a> più calde sono di tipo B9 e le più luminose raggiungo <a href="/wit/Magnitudine_apparente" title="Magnitudine apparente" wx:linktype="known" wx:pagename="Magnitudine_apparente" wx:page_id="2941" id="wx134">magnitudine</a> 9.2.</p>

<p id="wx135">L'età stimata si aggira fra i 220 e i 300 milioni di anni.</p>

<a id="Osservazione" name="Osservazione"/>
</wx:section><wx:section level="2" title="Osservazione" id="wxsec3"><h2 id="wx136">Osservazione</h2>

<p id="wx137">M23 può essere localizzata abbastanza facilmente in due modi:</p>

<ul id="wx138">
<li id="wx139">
<p id="wx140">2,5° a nord e 3,5° a ovest di <a href="/wit/Mu_Sagittarii" class="new" title="Mu Sagittarii" wx:linktype="unknown" wx:pagename="Mu_Sagittarii" id="wx141">Mu Sagittarii</a> (μ Sagittarii), più o meno sulla linea di <a href="/wit/Xi_Serpentis" class="new" title="Xi Serpentis" wx:linktype="unknown" wx:pagename="Xi_Serpentis" id="wx142">Xi Serpentis</a>.</p>
</li>

<li id="wx143">
<p id="wx144">0,5° a sud e 8° a est di <a href="/wit/M9_%28astronomia%29" title="M9 (astronomia)" wx:linktype="known" wx:pagename="M9_(astronomia)" wx:page_id="149507" id="wx145">M9</a> nell'<a href="/wit/Ophiuchus" title="Ophiuchus" wx:linktype="known" wx:pagename="Ophiuchus" wx:page_id="557283" id="wx146">Ofiuco</a>.</p>
</li>
</ul>

<p id="wx147">Si può osservare M23 anche con un <a href="/wit/Telescopio" title="Telescopio" wx:linktype="known" wx:pagename="Telescopio" wx:page_id="1253417" id="wx148">telescopio</a> di piccole dimensioni nei ricchi campi stellari della <a href="/wit/Via_Lattea" title="Via Lattea" wx:linktype="known" wx:pagename="Via_Lattea" wx:page_id="613433" id="wx149">Via Lattea</a>.</p>

<p id="wx150"><br id="wx151"/>
</p>

<a id="Collegamenti_esterni" name="Collegamenti_esterni"/>
</wx:section><wx:section level="2" title="Collegamenti esterni" id="wxsec4"><h2 id="wx152">Collegamenti esterni</h2>

<ul id="wx153">
<li id="wx154"><wx:template id="wx_t2" pagename="Template:En" page_id="121878"/>
<p id="wx155">(<span style="font-weight:bolder; font-size:80%" id="wx156"><a href="/wit/Lingua_inglese" title="Lingua inglese" wx:linktype="known" wx:pagename="Lingua_inglese" wx:page_id="2523" id="wx157">EN</a></span>) <wx:templateend start="wx_t2"/> <a href="http://www.seds.org/messier/m/m023.html" class="external text" wx:linktype="external" rel="nofollow" id="wx158">Messier 23, SEDS Messier pages</a></p>
</li>
</ul>

<p id="wx159"><br id="wx160"/>
</p>

<wx:template id="wx_t3" pagename="Template:CatalogoMessier" page_id="539481"/>
<center id="wx161">
<div class="NavFrame" style="clear:left; width:600px; align:center;" id="wx162">
<div class="NavHead" style="margin:0 auto; background:#CEDAF2; padding:3px; border:1px solid #003399; text-align:center" id="wx163"><b id="wx164">Oggetti del <a href="/wit/Catalogo_di_Messier" title="Catalogo di Messier" wx:linktype="known" wx:pagename="Catalogo_di_Messier" wx:page_id="12466" id="wx165">Catalogo di Messier</a></b></div>

<div class="NavContent" style="text-align:left" id="wx166">
<table class="WSerieH" style="margin-top:.5em; margin:0 auto; width:600px; background:#CEDAF2; padding:3px; border:1px solid #003399; text-align:center" cellspacing="1" id="wx167">
<tr style="font-size:0.9em" bgcolor="white" id="wx168">
<td id="wx169"><a href="/wit/Nebulosa_del_Granchio" title="Nebulosa del Granchio" wx:linktype="known" wx:pagename="Nebulosa_del_Granchio" wx:page_id="11680" id="wx170">M1</a> </td>
<td id="wx171"><a href="/wit/M2_%28astronomia%29" title="M2 (astronomia)" wx:linktype="known" wx:pagename="M2_(astronomia)" wx:page_id="133737" id="wx172">M2</a> </td>
<td id="wx173"><a href="/wit/M3_%28astronomia%29" title="M3 (astronomia)" wx:linktype="known" wx:pagename="M3_(astronomia)" wx:page_id="148843" id="wx174">M3</a> </td>
<td id="wx175"><a href="/wit/M4_%28astronomia%29" title="M4 (astronomia)" wx:linktype="known" wx:pagename="M4_(astronomia)" wx:page_id="42082" id="wx176">M4</a> </td>
<td id="wx177"><a href="/wit/M5_%28astronomia%29" title="M5 (astronomia)" wx:linktype="known" wx:pagename="M5_(astronomia)" wx:page_id="148943" id="wx178">M5</a> </td>
<td id="wx179"><a href="/wit/Ammasso_della_Farfalla" title="Ammasso della Farfalla" wx:linktype="known" wx:pagename="Ammasso_della_Farfalla" wx:page_id="42087" id="wx180">M6</a> </td>
<td id="wx181"><a href="/wit/M7_%28astronomia%29" title="M7 (astronomia)" wx:linktype="known" wx:pagename="M7_(astronomia)" wx:page_id="42103" id="wx182">M7</a> </td>
<td id="wx183"><a href="/wit/Nebulosa_Laguna" title="Nebulosa Laguna" wx:linktype="known" wx:pagename="Nebulosa_Laguna" wx:page_id="42124" id="wx184">M8</a> </td>
<td id="wx185"><a href="/wit/M9_%28astronomia%29" title="M9 (astronomia)" wx:linktype="known" wx:pagename="M9_(astronomia)" wx:page_id="149507" id="wx186">M9</a> </td>
<td id="wx187"><a href="/wit/M10_%28astronomia%29" title="M10 (astronomia)" wx:linktype="known" wx:pagename="M10_(astronomia)" wx:page_id="150479" id="wx188">M10</a> </td>
<td rowspan="11" id="wx189"><a href="/wit/Immagine:Messier.all.750pix.jpg" title="" wx:linktype="image" wx:pagename="Immagine:Messier.all.750pix.jpg" id="wx190"><img src="/wit/Immagine:Messier.all.750pix.jpg" alt="" width="280" id="wx191"/></a> </td>
</tr>

<tr style="font-size:0.9em" bgcolor="white" id="wx192">
<td id="wx193"><a href="/wit/Ammasso_dell%27Anitra_Selvatica" title="Ammasso dell'Anitra Selvatica" wx:linktype="known" wx:pagename="Ammasso_dell'Anitra_Selvatica" wx:page_id="42131" id="wx194">M11</a> </td>
<td id="wx195"><a href="/wit/M12_%28astronomia%29" title="M12 (astronomia)" wx:linktype="known" wx:pagename="M12_(astronomia)" wx:page_id="151171" id="wx196">M12</a> </td>
<td id="wx197"><a href="/wit/Ammasso_Globulare_di_Ercole" title="Ammasso Globulare di Ercole" wx:linktype="known" wx:pagename="Ammasso_Globulare_di_Ercole" wx:page_id="74067" id="wx198">M13</a> </td>
<td id="wx199"><a href="/wit/M14_%28astronomia%29" title="M14 (astronomia)" wx:linktype="known" wx:pagename="M14_(astronomia)" wx:page_id="151564" id="wx200">M14</a> </td>
<td id="wx201"><a href="/wit/M15_%28astronomia%29" title="M15 (astronomia)" wx:linktype="known" wx:pagename="M15_(astronomia)" wx:page_id="151584" id="wx202">M15</a> </td>
<td id="wx203"><a href="/wit/Nebulosa_Aquila" title="Nebulosa Aquila" wx:linktype="known" wx:pagename="Nebulosa_Aquila" wx:page_id="42257" id="wx204">M16</a> </td>
<td id="wx205"><a href="/wit/Nebulosa_Omega" title="Nebulosa Omega" wx:linktype="known" wx:pagename="Nebulosa_Omega" wx:page_id="151763" id="wx206">M17</a> </td>
<td id="wx207"><a href="/wit/M18_%28astronomia%29" title="M18 (astronomia)" wx:linktype="known" wx:pagename="M18_(astronomia)" wx:page_id="151847" id="wx208">M18</a> </td>
<td id="wx209"><a href="/wit/M19_%28astronomia%29" title="M19 (astronomia)" wx:linktype="known" wx:pagename="M19_(astronomia)" wx:page_id="151860" id="wx210">M19</a> </td>
<td id="wx211"><a href="/wit/Nebulosa_Trifida" title="Nebulosa Trifida" wx:linktype="known" wx:pagename="Nebulosa_Trifida" wx:page_id="42377" id="wx212">M20</a> </td>
</tr>

<tr style="font-size:0.9em" bgcolor="white" id="wx213">
<td id="wx214"><a href="/wit/M21_%28astronomia%29" title="M21 (astronomia)" wx:linktype="known" wx:pagename="M21_(astronomia)" wx:page_id="151871" id="wx215">M21</a> </td>
<td id="wx216"><a href="/wit/M22_%28astronomia%29" title="M22 (astronomia)" wx:linktype="known" wx:pagename="M22_(astronomia)" wx:page_id="151959" id="wx217">M22</a> </td>
<td id="wx218"><a href="/wit/M23_%28astronomia%29" title="M23 (astronomia)" wx:linktype="self" wx:pagename="M23_(astronomia)" wx:page_id="309178" id="wx219">M23</a> </td>
<td id="wx220"><a href="/wit/Nube_di_stelle_del_Sagittario" title="Nube di stelle del Sagittario" wx:linktype="known" wx:pagename="Nube_di_stelle_del_Sagittario" wx:page_id="190815" id="wx221">M24</a> </td>
<td id="wx222"><a href="/wit/Ammasso_aperto_M25" title="Ammasso aperto M25" wx:linktype="known" wx:pagename="Ammasso_aperto_M25" wx:page_id="479606" id="wx223">M25</a> </td>
<td id="wx224"><a href="/wit/M26_%28astronomia%29" title="M26 (astronomia)" wx:linktype="known" wx:pagename="M26_(astronomia)" wx:page_id="479784" id="wx225">M26</a> </td>
<td id="wx226"><a href="/wit/Nebulosa_Manubrio" title="Nebulosa Manubrio" wx:linktype="known" wx:pagename="Nebulosa_Manubrio" wx:page_id="42429" id="wx227">M27</a> </td>
<td id="wx228"><a href="/wit/M28_%28astronomia%29" title="M28 (astronomia)" wx:linktype="known" wx:pagename="M28_(astronomia)" wx:page_id="479869" id="wx229">M28</a> </td>
<td id="wx230"><a href="/wit/M29_%28astronomia%29" title="M29 (astronomia)" wx:linktype="known" wx:pagename="M29_(astronomia)" wx:page_id="487622" id="wx231">M29</a> </td>
<td id="wx232"><a href="/wit/M30_%28astronomia%29" title="M30 (astronomia)" wx:linktype="known" wx:pagename="M30_(astronomia)" wx:page_id="488509" id="wx233">M30</a> </td>
</tr>

<tr style="font-size:0.9em" bgcolor="white" id="wx234">
<td id="wx235"><a href="/wit/Galassia_di_Andromeda" title="Galassia di Andromeda" wx:linktype="known" wx:pagename="Galassia_di_Andromeda" wx:page_id="2188" id="wx236">M31</a> </td>
<td id="wx237"><a href="/wit/M32_%28astronomia%29" title="M32 (astronomia)" wx:linktype="known" wx:pagename="M32_(astronomia)" wx:page_id="151967" id="wx238">M32</a> </td>
<td id="wx239"><a href="/wit/Galassia_del_Triangolo" title="Galassia del Triangolo" wx:linktype="known" wx:pagename="Galassia_del_Triangolo" wx:page_id="2189" id="wx240">M33</a> </td>
<td id="wx241"><a href="/wit/M34_%28astronomia%29" title="M34 (astronomia)" wx:linktype="known" wx:pagename="M34_(astronomia)" wx:page_id="509896" id="wx242">M34</a> </td>
<td id="wx243"><a href="/wit/M35_%28astronomia%29" title="M35 (astronomia)" wx:linktype="known" wx:pagename="M35_(astronomia)" wx:page_id="152042" id="wx244">M35</a> </td>
<td id="wx245"><a href="/wit/M36_%28astronomia%29" title="M36 (astronomia)" wx:linktype="known" wx:pagename="M36_(astronomia)" wx:page_id="509982" id="wx246">M36</a> </td>
<td id="wx247"><a href="/wit/M37_%28astronomia%29" title="M37 (astronomia)" wx:linktype="known" wx:pagename="M37_(astronomia)" wx:page_id="152059" id="wx248">M37</a> </td>
<td id="wx249"><a href="/wit/M38_%28astronomia%29" title="M38 (astronomia)" wx:linktype="known" wx:pagename="M38_(astronomia)" wx:page_id="513305" id="wx250">M38</a> </td>
<td id="wx251"><a href="/wit/M39_%28astronomia%29" title="M39 (astronomia)" wx:linktype="known" wx:pagename="M39_(astronomia)" wx:page_id="513316" id="wx252">M39</a> </td>
<td id="wx253"><a href="/wit/M40_%28astronomia%29" title="M40 (astronomia)" wx:linktype="known" wx:pagename="M40_(astronomia)" wx:page_id="513328" id="wx254">M40</a> </td>
</tr>

<tr style="font-size:0.9em" bgcolor="white" id="wx255">
<td id="wx256"><a href="/wit/M41_%28astronomia%29" title="M41 (astronomia)" wx:linktype="known" wx:pagename="M41_(astronomia)" wx:page_id="409117" id="wx257">M41</a> </td>
<td id="wx258"><a href="/wit/Nebulosa_di_Orione" title="Nebulosa di Orione" wx:linktype="known" wx:pagename="Nebulosa_di_Orione" wx:page_id="3094" id="wx259">M42</a> </td>
<td id="wx260"><a href="/wit/Nebulosa_De_Mairan" title="Nebulosa De Mairan" wx:linktype="known" wx:pagename="Nebulosa_De_Mairan" wx:page_id="514576" id="wx261">M43</a> </td>
<td id="wx262"><a href="/wit/Ammasso_Alveare" title="Ammasso Alveare" wx:linktype="known" wx:pagename="Ammasso_Alveare" wx:page_id="1609230" id="wx263">M44</a> </td>
<td id="wx264"><a href="/wit/Pleiadi_%28astronomia%29" title="Pleiadi (astronomia)" wx:linktype="known" wx:pagename="Pleiadi_(astronomia)" wx:page_id="702165" id="wx265">M45</a> </td>
<td id="wx266"><a href="/wit/M46_%28astronomia%29" title="M46 (astronomia)" wx:linktype="known" wx:pagename="M46_(astronomia)" wx:page_id="515514" id="wx267">M46</a> </td>
<td id="wx268"><a href="/wit/M47_%28astronomia%29" title="M47 (astronomia)" wx:linktype="known" wx:pagename="M47_(astronomia)" wx:page_id="515524" id="wx269">M47</a> </td>
<td id="wx270"><a href="/wit/M48_%28astronomia%29" title="M48 (astronomia)" wx:linktype="known" wx:pagename="M48_(astronomia)" wx:page_id="518827" id="wx271">M48</a> </td>
<td id="wx272"><a href="/wit/M49_%28astronomia%29" title="M49 (astronomia)" wx:linktype="known" wx:pagename="M49_(astronomia)" wx:page_id="503346" id="wx273">M49</a> </td>
<td id="wx274"><a href="/wit/M50_%28astronomia%29" title="M50 (astronomia)" wx:linktype="known" wx:pagename="M50_(astronomia)" wx:page_id="518866" id="wx275">M50</a> </td>
</tr>

<tr style="font-size:0.9em" bgcolor="white" id="wx276">
<td id="wx277"><a href="/wit/Galassia_vortice" title="Galassia vortice" wx:linktype="known" wx:pagename="Galassia_vortice" wx:page_id="42598" id="wx278">M51</a> </td>
<td id="wx279"><a href="/wit/M52_%28astronomia%29" title="M52 (astronomia)" wx:linktype="known" wx:pagename="M52_(astronomia)" wx:page_id="519222" id="wx280">M52</a> </td>
<td id="wx281"><a href="/wit/M53_%28astronomia%29" title="M53 (astronomia)" wx:linktype="known" wx:pagename="M53_(astronomia)" wx:page_id="519234" id="wx282">M53</a> </td>
<td id="wx283"><a href="/wit/M54_%28astronomia%29" title="M54 (astronomia)" wx:linktype="known" wx:pagename="M54_(astronomia)" wx:page_id="519541" id="wx284">M54</a> </td>
<td id="wx285"><a href="/wit/M55_%28astronomia%29" title="M55 (astronomia)" wx:linktype="known" wx:pagename="M55_(astronomia)" wx:page_id="519585" id="wx286">M55</a> </td>
<td id="wx287"><a href="/wit/M56_%28astronomia%29" title="M56 (astronomia)" wx:linktype="known" wx:pagename="M56_(astronomia)" wx:page_id="519605" id="wx288">M56</a> </td>
<td id="wx289"><a href="/wit/Nebulosa_anello" title="Nebulosa anello" wx:linktype="known" wx:pagename="Nebulosa_anello" wx:page_id="42638" id="wx290">M57</a> </td>
<td id="wx291"><a href="/wit/M58_%28astronomia%29" title="M58 (astronomia)" wx:linktype="known" wx:pagename="M58_(astronomia)" wx:page_id="519692" id="wx292">M58</a> </td>
<td id="wx293"><a href="/wit/M59_%28astronomia%29" title="M59 (astronomia)" wx:linktype="known" wx:pagename="M59_(astronomia)" wx:page_id="509025" id="wx294">M59</a> </td>
<td id="wx295"><a href="/wit/Messier_60" title="Messier 60" wx:linktype="known" wx:pagename="Messier_60" wx:page_id="1807967" id="wx296">M60</a> </td>
</tr>

<tr style="font-size:0.9em" bgcolor="white" id="wx297">
<td id="wx298"><a href="/wit/M61_%28astronomia%29" title="M61 (astronomia)" wx:linktype="known" wx:pagename="M61_(astronomia)" wx:page_id="519712" id="wx299">M61</a> </td>
<td id="wx300"><a href="/wit/M62_%28astronomia%29" title="M62 (astronomia)" wx:linktype="known" wx:pagename="M62_(astronomia)" wx:page_id="518574" id="wx301">M62</a> </td>
<td id="wx302"><a href="/wit/Galassia_Girasole" title="Galassia Girasole" wx:linktype="known" wx:pagename="Galassia_Girasole" wx:page_id="519734" id="wx303">M63</a> </td>
<td id="wx304"><a href="/wit/Galassia_Occhio_Nero" title="Galassia Occhio Nero" wx:linktype="known" wx:pagename="Galassia_Occhio_Nero" wx:page_id="42656" id="wx305">M64</a> </td>
<td id="wx306"><a href="/wit/M65_%28astronomia%29" title="M65 (astronomia)" wx:linktype="known" wx:pagename="M65_(astronomia)" wx:page_id="151163" id="wx307">M65</a> </td>
<td id="wx308"><a href="/wit/M66_%28astronomia%29" title="M66 (astronomia)" wx:linktype="known" wx:pagename="M66_(astronomia)" wx:page_id="151162" id="wx309">M66</a> </td>
<td id="wx310"><a href="/wit/M67_%28astronomia%29" title="M67 (astronomia)" wx:linktype="known" wx:pagename="M67_(astronomia)" wx:page_id="518495" id="wx311">M67</a> </td>
<td id="wx312"><a href="/wit/M68_%28astronomia%29" title="M68 (astronomia)" wx:linktype="known" wx:pagename="M68_(astronomia)" wx:page_id="519755" id="wx313">M68</a> </td>
<td id="wx314"><a href="/wit/M69_%28astronomia%29" title="M69 (astronomia)" wx:linktype="known" wx:pagename="M69_(astronomia)" wx:page_id="519783" id="wx315">M69</a> </td>
<td id="wx316"><a href="/wit/M70_%28astronomia%29" title="M70 (astronomia)" wx:linktype="known" wx:pagename="M70_(astronomia)" wx:page_id="514524" id="wx317">M70</a> </td>
</tr>

<tr style="font-size:0.9em" bgcolor="white" id="wx318">
<td id="wx319"><a href="/wit/M71_%28astronomia%29" title="M71 (astronomia)" wx:linktype="known" wx:pagename="M71_(astronomia)" wx:page_id="520017" id="wx320">M71</a> </td>
<td id="wx321"><a href="/wit/M72_%28ammasso_globulare%29" title="M72 (ammasso globulare)" wx:linktype="known" wx:pagename="M72_(ammasso_globulare)" wx:page_id="517973" id="wx322">M72</a> </td>
<td id="wx323"><a href="/wit/M73_%28astronomia%29" title="M73 (astronomia)" wx:linktype="known" wx:pagename="M73_(astronomia)" wx:page_id="520066" id="wx324">M73</a> </td>
<td id="wx325"><a href="/wit/M74_%28astronomia%29" title="M74 (astronomia)" wx:linktype="known" wx:pagename="M74_(astronomia)" wx:page_id="152298" id="wx326">M74</a> </td>
<td id="wx327"><a href="/wit/M75_%28astronomia%29" title="M75 (astronomia)" wx:linktype="known" wx:pagename="M75_(astronomia)" wx:page_id="509964" id="wx328">M75</a> </td>
<td id="wx329"><a href="/wit/Nebulosa_piccola_campana_muta" title="Nebulosa piccola campana muta" wx:linktype="known" wx:pagename="Nebulosa_piccola_campana_muta" wx:page_id="152894" id="wx330">M76</a> </td>
<td id="wx331"><a href="/wit/M77_%28astronomia%29" title="M77 (astronomia)" wx:linktype="known" wx:pagename="M77_(astronomia)" wx:page_id="515252" id="wx332">M77</a> </td>
<td id="wx333"><a href="/wit/M78_%28astronomia%29" title="M78 (astronomia)" wx:linktype="known" wx:pagename="M78_(astronomia)" wx:page_id="509882" id="wx334">M78</a> </td>
<td id="wx335"><a href="/wit/M79_%28astronomia%29" title="M79 (astronomia)" wx:linktype="known" wx:pagename="M79_(astronomia)" wx:page_id="516117" id="wx336">M79</a> </td>
<td id="wx337"><a href="/wit/M80_%28astronomia%29" title="M80 (astronomia)" wx:linktype="known" wx:pagename="M80_(astronomia)" wx:page_id="497796" id="wx338">M80</a> </td>
</tr>

<tr style="font-size:0.9em" bgcolor="white" id="wx339">
<td id="wx340"><a href="/wit/Galassia_di_Bode" title="Galassia di Bode" wx:linktype="known" wx:pagename="Galassia_di_Bode" wx:page_id="42741" id="wx341">M81</a> </td>
<td id="wx342"><a href="/wit/Galassia_Sigaro" title="Galassia Sigaro" wx:linktype="known" wx:pagename="Galassia_Sigaro" wx:page_id="85280" id="wx343">M82</a> </td>
<td id="wx344"><a href="/wit/Galassia_girandola_del_sud" title="Galassia girandola del sud" wx:linktype="known" wx:pagename="Galassia_girandola_del_sud" wx:page_id="516122" id="wx345">M83</a> </td>
<td id="wx346"><a href="/wit/M84_%28astronomia%29" title="M84 (astronomia)" wx:linktype="known" wx:pagename="M84_(astronomia)" wx:page_id="502908" id="wx347">M84</a> </td>
<td id="wx348"><a href="/wit/M85_%28astronomia%29" title="M85 (astronomia)" wx:linktype="known" wx:pagename="M85_(astronomia)" wx:page_id="516133" id="wx349">M85</a> </td>
<td id="wx350"><a href="/wit/M86_%28astronomia%29" title="M86 (astronomia)" wx:linktype="known" wx:pagename="M86_(astronomia)" wx:page_id="284249" id="wx351">M86</a> </td>
<td id="wx352"><a href="/wit/Galassia_Virgo_A" title="Galassia Virgo A" wx:linktype="known" wx:pagename="Galassia_Virgo_A" wx:page_id="20738" id="wx353">M87</a> </td>
<td id="wx354"><a href="/wit/M88_%28astronomia%29" title="M88 (astronomia)" wx:linktype="known" wx:pagename="M88_(astronomia)" wx:page_id="516135" id="wx355">M88</a> </td>
<td id="wx356"><a href="/wit/M89_%28astronomia%29" title="M89 (astronomia)" wx:linktype="known" wx:pagename="M89_(astronomia)" wx:page_id="509865" id="wx357">M89</a> </td>
<td id="wx358"><a href="/wit/M90_%28astronomia%29" title="M90 (astronomia)" wx:linktype="known" wx:pagename="M90_(astronomia)" wx:page_id="210917" id="wx359">M90</a> </td>
</tr>

<tr style="font-size:0.9em" bgcolor="white" id="wx360">
<td id="wx361"><a href="/wit/M91_%28astronomia%29" title="M91 (astronomia)" wx:linktype="known" wx:pagename="M91_(astronomia)" wx:page_id="520089" id="wx362">M91</a> </td>
<td id="wx363"><a href="/wit/M92_%28astronomia%29" title="M92 (astronomia)" wx:linktype="known" wx:pagename="M92_(astronomia)" wx:page_id="152330" id="wx364">M92</a> </td>
<td id="wx365"><a href="/wit/M93_%28astronomia%29" title="M93 (astronomia)" wx:linktype="known" wx:pagename="M93_(astronomia)" wx:page_id="509933" id="wx366">M93</a> </td>
<td id="wx367"><a href="/wit/M94_%28astronomia%29" title="M94 (astronomia)" wx:linktype="known" wx:pagename="M94_(astronomia)" wx:page_id="520109" id="wx368">M94</a> </td>
<td id="wx369"><a href="/wit/M95_%28astronomia%29" title="M95 (astronomia)" wx:linktype="known" wx:pagename="M95_(astronomia)" wx:page_id="504492" id="wx370">M95</a> </td>
<td id="wx371"><a href="/wit/M96_%28astronomia%29" title="M96 (astronomia)" wx:linktype="known" wx:pagename="M96_(astronomia)" wx:page_id="504481" id="wx372">M96</a> </td>
<td id="wx373"><a href="/wit/Nebulosa_Gufo" title="Nebulosa Gufo" wx:linktype="known" wx:pagename="Nebulosa_Gufo" wx:page_id="152909" id="wx374">M97</a> </td>
<td id="wx375"><a href="/wit/M98_%28astronomia%29" title="M98 (astronomia)" wx:linktype="known" wx:pagename="M98_(astronomia)" wx:page_id="520121" id="wx376">M98</a> </td>
<td id="wx377"><a href="/wit/M99_%28astronomia%29" title="M99 (astronomia)" wx:linktype="known" wx:pagename="M99_(astronomia)" wx:page_id="502847" id="wx378">M99</a> </td>
<td id="wx379"><a href="/wit/M100" title="M100" wx:linktype="known" wx:pagename="M100" wx:page_id="98906" id="wx380">M100</a> </td>
</tr>

<tr style="font-size:0.9em" bgcolor="white" id="wx381">
<td id="wx382"><a href="/wit/Galassia_girandola" title="Galassia girandola" wx:linktype="known" wx:pagename="Galassia_girandola" wx:page_id="152361" id="wx383">M101</a> </td>
<td id="wx384"><a href="/wit/M102" title="M102" wx:linktype="known" wx:pagename="M102" wx:page_id="153012" id="wx385">M102</a> </td>
<td id="wx386"><a href="/wit/M103" title="M103" wx:linktype="known" wx:pagename="M103" wx:page_id="520358" id="wx387">M103</a> </td>
<td id="wx388"><a href="/wit/M104" title="M104" wx:linktype="known" wx:pagename="M104" wx:page_id="42211" id="wx389">M104</a> </td>
<td id="wx390"><a href="/wit/M105" title="M105" wx:linktype="known" wx:pagename="M105" wx:page_id="520365" id="wx391">M105</a> </td>
<td id="wx392"><a href="/wit/M106" title="M106" wx:linktype="known" wx:pagename="M106" wx:page_id="130900" id="wx393">M106</a> </td>
<td id="wx394"><a href="/wit/M107" title="M107" wx:linktype="known" wx:pagename="M107" wx:page_id="520378" id="wx395">M107</a> </td>
<td id="wx396"><a href="/wit/M108" title="M108" wx:linktype="known" wx:pagename="M108" wx:page_id="520389" id="wx397">M108</a> </td>
<td id="wx398"><a href="/wit/M109" title="M109" wx:linktype="known" wx:pagename="M109" wx:page_id="520397" id="wx399">M109</a> </td>
<td id="wx400"><a href="/wit/M110" title="M110" wx:linktype="known" wx:pagename="M110" wx:page_id="152587" id="wx401">M110</a> </td>
</tr>
</table>
</div>
</div>
</center>

<p id="wx402"><br id="wx403"/>
</p>

<wx:templateend start="wx_t3"/>
<wx:template id="wx_t4" pagename="Template:Portale" page_id="949487"/>
<div style="margin-left:0; margin-right:0" id="wx404">
<ul style="display:block; clear:both; list-style-image:none; list-style-type:none; width:100%; vertical-align:middle; margin:0; margin-bottom:1em; padding:0; min-height:27px" id="wx405">
<li style="float:left; height:27px; line-height:25px; width:100%; margin:0; margin-top:.5em; margin-left:0; margin-right:0; padding:0; border:1px solid #CCF; background-color:#F0EEFF" title="Accedi alle voci di Wikipedia che parlano di astronomia" id="wx406"><a href="/wit/Immagine:Stub_astronomia.png" title="astronomia" wx:linktype="image" wx:pagename="Immagine:Stub_astronomia.png" wx:page_id="671468" id="wx407"><img src="/wit/Immagine:Stub_astronomia.png" alt="astronomia" width="25" height="25" id="wx408"/></a> <b id="wx409"><a href="/wit/Portale:astronomia" class="new" title="Portale:astronomia" wx:linktype="unknown" wx:pagename="Portale:astronomia" id="wx410">Portale Astronomia</a></b>
<p id="wx411">:  accedi alle voci di Wikipedia che parlano di astronomia</p>
</li>
</ul>
</div>

<wx:templateend start="wx_t4"/>
</wx:section></wx:section></div>
<div id="wx_categorylinks">
<a href="/wit/index.php?title=Speciale:Categories&amp;article=M23_%28astronomia%29" title="Speciale:Categories" wx:linktype="known" wx:pagename="Speciale:Categories" id="wx412">Categorie</a>: <span dir="ltr" id="wx413"><a href="/wit/Categoria:Catalogo_di_Messier" title="Categoria:Catalogo di Messier" wx:linktype="known" wx:pagename="Categoria:Catalogo_di_Messier" wx:page_id="524135" id="wx414">Catalogo di Messier</a></span> | <span dir="ltr" id="wx415"><a href="/wit/Categoria:Ammassi_aperti" title="Categoria:Ammassi aperti" wx:linktype="known" wx:pagename="Categoria:Ammassi_aperti" wx:page_id="53976" id="wx416">Ammassi aperti</a></span></div>
<div id="wx_languagelinks">
Altre lingue: <a href="http://bg.wikipedia.org/wiki/M23" class="external" wx:linktype="interwiki" wx:pagename="bg:M23" id="wx417">Български</a> | <a href="http://ca.wikipedia.org/wiki/Messier_23" class="external" wx:linktype="interwiki" wx:pagename="ca:Messier_23" id="wx418">Català</a> | <a href="http://co.wikipedia.org/wiki/M23" class="external" wx:linktype="interwiki" wx:pagename="co:M23" id="wx419">Corsu</a> | <a href="http://cs.wikipedia.org/wiki/Messier_23" class="external" wx:linktype="interwiki" wx:pagename="cs:Messier_23" id="wx420">Česky</a> | <a href="http://de.wikipedia.org/wiki/Messier_23" class="external" wx:linktype="interwiki" wx:pagename="de:Messier_23" id="wx421">Deutsch</a> | <a href="http://en.wikipedia.org/wiki/Messier_23" class="external" wx:linktype="interwiki" wx:pagename="en:Messier_23" id="wx422">English</a> | <a href="http://eo.wikipedia.org/wiki/M23" class="external" wx:linktype="interwiki" wx:pagename="eo:M23" id="wx423">Esperanto</a> | <a href="http://es.wikipedia.org/wiki/C%C3%BAmulo_abierto_M23" class="external" wx:linktype="interwiki" wx:pagename="es:Cúmulo_abierto_M23" id="wx424">Español</a> | <a href="http://fi.wikipedia.org/wiki/Messier_23" class="external" wx:linktype="interwiki" wx:pagename="fi:Messier_23" id="wx425">Suomi</a> | <a href="http://fr.wikipedia.org/wiki/M23" class="external" wx:linktype="interwiki" wx:pagename="fr:M23" id="wx426">Français</a> | <a href="http://hr.wikipedia.org/wiki/Messier_23" class="external" wx:linktype="interwiki" wx:pagename="hr:Messier_23" id="wx427">Hrvatski</a> | <a href="http://hu.wikipedia.org/wiki/Messier_23" class="external" wx:linktype="interwiki" wx:pagename="hu:Messier_23" id="wx428">Magyar</a> | <a href="http://ja.wikipedia.org/wiki/M23" class="external" wx:linktype="interwiki" wx:pagename="ja:M23" id="wx429">日本語</a> | <a href="http://ko.wikipedia.org/wiki/M23_%28%EC%B2%9C%EC%B2%B4%29" class="external" wx:linktype="interwiki" wx:pagename="ko:M23_(천체)" id="wx430">한국어</a> | <a href="http://lt.wikipedia.org/wiki/Mesj%C4%97_23" class="external" wx:linktype="interwiki" wx:pagename="lt:Mesjė_23" id="wx431">Lietuvių</a> | <a href="http://nl.wikipedia.org/wiki/Messier_23" class="external" wx:linktype="interwiki" wx:pagename="nl:Messier_23" id="wx432">Nederlands</a> | <a href="http://pl.wikipedia.org/wiki/Messier_23" class="external" wx:linktype="interwiki" wx:pagename="pl:Messier_23" id="wx433">Polski</a> | <a href="http://ru.wikipedia.org/wiki/%D0%A0%D0%B0%D1%81%D1%81%D0%B5%D1%8F%D0%BD%D0%BD%D0%BE%D0%B5_%D1%81%D0%BA%D0%BE%D0%BF%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5_M23" class="external" wx:linktype="interwiki" wx:pagename="ru:Рассеянное_скопление_M23" id="wx434">Русский</a> | <a href="http://sk.wikipedia.org/wiki/Hviezdokopa_M23" class="external" wx:linktype="interwiki" wx:pagename="sk:Hviezdokopa_M23" id="wx435">Slovenčina</a> | <a href="http://uk.wikipedia.org/wiki/NGC_6494" class="external" wx:linktype="interwiki" wx:pagename="uk:NGC_6494" id="wx436">Українська</a> | <a href="http://zh.wikipedia.org/wiki/M23" class="external" wx:linktype="interwiki" wx:pagename="zh:M23" id="wx437">中文</a></div>
</body>
<wx:templatearguments for="wx_t1"><wx:argument name="image">
<a href="/wit/Immagine:Messier_object_023.jpg" title="M23" wx:linktype="image" wx:pagename="Immagine:Messier_object_023.jpg" id="wx438"><img src="/wit/Immagine:Messier_object_023.jpg" alt="M23" width="280" id="wx439"/></a>
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<a href="/wit/Charles_Messier" title="Charles Messier" wx:linktype="known" wx:pagename="Charles_Messier" wx:page_id="1479" id="wx440">Charles Messier</a>
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<a href="/wit/1764" title="1764" wx:linktype="known" wx:pagename="1764" wx:page_id="5546" id="wx441">1764</a>
</wx:argument><wx:argument name="nome">
<p id="wx442">M23</p>
</wx:argument><wx:argument name="epoca">
<p id="wx443">J2000.0</p>
</wx:argument><wx:argument name="costellazione">
<a href="/wit/Sagittario_%28astronomia%29" title="Sagittario (astronomia)" wx:linktype="known" wx:pagename="Sagittario_(astronomia)" wx:page_id="557231" id="wx444">Sagittario</a>
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<a href="/wit/Ammasso_aperto" title="Ammasso aperto" wx:linktype="known" wx:pagename="Ammasso_aperto" wx:page_id="550" id="wx445">Ammasso aperto</a>
</wx:argument><wx:argument name="classe">
<p id="wx446">I,2,r</p>
</wx:argument><wx:argument name="ar">
<p id="wx447">17<sup id="wx448">h</sup> 56.8<sup id="wx449">m</sup></p>
</wx:argument><wx:argument name="dec">
<p id="wx450">−19° 01′</p>
</wx:argument><wx:argument name="dist_al">
<p id="wx451">2150 <a href="/wit/Anno_luce" title="Anno luce" wx:linktype="known" wx:pagename="Anno_luce" wx:page_id="342" id="wx452">a.l.</a></p>
</wx:argument><wx:argument name="dist_pc">
<p id="wx453">659 <a href="/wit/Parsec" title="Parsec" wx:linktype="known" wx:pagename="Parsec" wx:page_id="1471541" id="wx454">pc</a></p>
</wx:argument><wx:argument name="appmag_v">
<p id="wx455">6.9</p>
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<p id="wx456">27.0′</p>
</wx:argument><wx:argument name="massa_kg"/><wx:argument name="massa_msol"/><wx:argument name="raggio_al">
<p id="wx457">8 <a href="/wit/Anno_luce" title="Anno luce" wx:linktype="known" wx:pagename="Anno_luce" wx:page_id="342" id="wx458">al</a></p>
</wx:argument><wx:argument name="v_hb"/><wx:argument name="eta">
<p id="wx459">220-300 milioni di anni</p>
</wx:argument><wx:argument name="note"/><wx:argument name="nomi">
<p id="wx460">NGC 6494</p>
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<wx:templatearguments for="wx_t4"><wx:argument name="1">
<p id="wx461">astronomia</p>
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</html>
