IAU Minor Planet Center

<!DOCTYPE html> <head> <title>IAU Minor Planet Center</title>  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">   <link rel="stylesheet" href="/static/global/jquery-ui-1.12.1.custom/jquery-ui.min.css"> <script src="/static/global/js/jquery-3.4.1.min.js"></script> <script src="/static/global/jquery-ui-1.12.1.custom/jquery-ui.min.js"></script>  <meta name="description" content="We are the official body that deals with astrometric observations and orbits of minor planets (asteroids) and comets."> <meta name="keywords" content="astrometry, observations, orbits, minor planets, asteroids, comets, near earth objects, potentially hazardous asteroids"> <meta http-equiv="content-type" content="text/html;charset=UTF-8"> <link rel="stylesheet" type="text/css" href="/stylesheets/mpc.css"> <link rel="stylesheet" type="text/css" href="/stylesheets/table-sorter.css"> <link media="all" rel="stylesheet" href="/css/all.css"> <link rel="icon" 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Planet Center</a></h1> <div class="area">  <nav class="top-nav"> <ul> <li><a href="/">Home</a></li> <li><a href="/about">About</a></li> <li><a href="/mpcops/contact/">Contact</a></li> <li><a href="https://mpc-service.atlassian.net/servicedesk/customer/portals">Helpdesk</a></li> </ul> </nav>  <div class="form-holder">   <form class="search-form" method="get" action="https://www.google.com/search"> <fieldset>  <input type="hidden" name="sitesearch" value="minorplanetcenter.net"> <input type="text" onfocus="if(this.value==this.defaultValue)this.value='';" onblur="if(this.value=='')this.value=this.defaultValue;" id="search" name="q" value="Search MPC"> </fieldset> </form> </div> <div class="social-bar">     </div> </div> </div> <nav class="nav-holder">  <ul id="nav"> <li> <a href="/iau/mpc.html"><span>OBSERVERS</span></a> <ul> <li><a href="/iau/MPEph/MPEph.html">Ephemeris Service</a></li> <li><a href="/mpec/RecentMPECs.html">MPECs</a></li> <li><a href="/iau/NEO/toconfirm_tabular.html">NEO 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node.textContent.trim().includes('NEW') || node.textContent.trim().includes('STATUS') || node.textContent.trim().includes('DOCUMENTATION') || node.textContent.trim().includes('EXTERNAL')){ directTextContent += node.textContent.trim(); } }); return directTextContent; } listItems.forEach(function (li) { const directText = getDirectTextContent(li); const textLength = directText.length; // Log the length of each item to the console //console.log(`Text: "${li.textContent.trim()}", Length: ${textLength}`); // Apply class based on length if (textLength <= 5) { li.classList.add('short-word'); } else if (textLength <= 10) { li.classList.add('medium-word'); } else { li.classList.add('long-word'); } }); }); </script>  <div id="main">   <div class="django"> <h1></h1> <p></p> <div> <h2>Request for archival astrometry and identifications</h2> <br> <h3>NEOWISE (C51) astrometry from 2010 </h3> <p> Numerous orbits have been published in 2010 using <a href="https://neowise.ipac.caltech.edu/">NEOWISE (C51)</a> astrometry. Most of these orbits are short-arc (less than 2 days) highly uncertain orbits with no photometric data attached. From the <a href="https://minorplanetcenter.net/iau/MPCORB.html">MPCORB</a> catalog, we have collected all the orbits that are purely made of C51 astrometry obtained in 2010 and have no photometric data attached. </p> <p> We encourage our users to submit any archival precoveries: non-C51 astrometric and photometric data is highly desirable. In doing so, please follow our rules for <a href="/mpcops/documentation/identifications/">identifications</a>. Single night observations are not useful for linking to these orbits and won't be accepted. <br> It is also likely that there could be matching positions in the ITF or designations that can be linked to these orbits. <br> You can submit your linkages to the <a href="/mpcops/documentation/identifications/">identification pipeline.</a> </p> <p> The following files are available for download: <ul> <li>List of designations from C51 observations: <th> <a href="/media/no_orbits_astrometry/c51_desigs.txt">designation file </a> </th> </li> <li>List of the observations corresponding to the previous designations both in the 80-column format and ADES-XML: <th> <a href="/media/no_orbits_astrometry/c51.obs">obs file (obs80) </a> and <a href="/media/no_orbits_astrometry/c51.xml">ADES-XML file</a> </th> </li> <li>List of orbits in the MPCORB format: <th> <a href="/media/no_orbits_astrometry/c51.orbits">MPCORB-format orbits </a> </th> </li> </ul> </p> <br> <h3>The designations without any orbit</h3> <p> There are designations (usually single or two-nights) that are not attached to any orbit, nor are secondary designations. It is likely they can be either linked to an existing orbit, can get additional archival astrometry to get an orbit derived and published or could be false linkages consisting of known objects (e.g. invalid linkages of two-nighters). <br> MPC appreciates any assistance with the linking or any additional archival astrometry extending the arcs of the following designations. </p> <p> The following files are available for download: <ul> <li>List of the observations both in the 80-column format and ADES-XML for the designations without any orbit: <th> <a href="/media/no_orbits_astrometry/no_orbit_desigs.obs">obs file (obs80) </a> and <a href="/media/no_orbits_astrometry/no_orbit_desigs.xml">ADES-XML file</a> </th> </li> </ul> </p> <br> <p> Last Updated: <p id="last_modified"> <script> const date = new Date(document.lastModified); const utcDateStr = `${date.getUTCFullYear()}-${String(date.getUTCMonth() + 1).padStart(2, '0')}-${String(date.getUTCDate()).padStart(2, '0')} ${String(date.getUTCHours()).padStart(2, '0')}:${String(date.getUTCMinutes()).padStart(2, '0')}:${String(date.getUTCSeconds()).padStart(2, '0')} UTC`; document.getElementById("last_modified").innerHTML = utcDateStr; </script> </p> </div>  </div>  </div> </div> </div>  <footer id="footer"> <div class="holder"> <nav class="nav"> <ul> <li><a href="/">Home</a></li> <li><a href="/about">About</a></li>  <li><a href="https://mpc-service.atlassian.net/servicedesk/customer/portals">Helpdesk</a></li>  </ul> </nav> <a href="https://www.cfa.harvard.edu"> <img src="/images/CfA_Logo_Vertical_CMYK.png" width="110" height="47"></a> <p> <p> <p> <div class="copy">The Minor Planet Center is hosted by the Center for Astrophysics | Harvard & Smithsonian.<center>The Minor Planet Center is funded by NASA.</center></div> </footer> <script type="text/javascript"> $(window).on('load', (function() { $("table").tablesorter(); })); </script> <script type="text/javascript"> //<![CDATA[ var _tag=new WebTrends(); _tag.dcsGetId(); //]]> </script> <script type="text/javascript"> //<![CDATA[ _tag.dcsCustom=function(){ // Add custom parameters here. //_tag.DCSext.param_name=param_value; } _tag.dcsCollect(); //]]> </script> <noscript> <div><img alt="DCSIMG" id="DCSIMG" width="1" height="1" src="//logs1.smithsonian.museum/dcsa7yzrmbdzpxzrosrn4tyep_5i1d/njs.gif?dcsuri=/nojavascript&WT.js=No&WT.tv=9.4.0&dcssip=www.minorplanetcenter.net"/></div> </noscript> </body>  </html>

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