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MPCAT
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"> <base href="/iau/"> <link rel="stylesheet" type="text/css" href="/stylesheets/mpc.css"> <link rel="stylesheet" type="text/css" href="/stylesheets/table-sorter.css"> <meta http-equiv="content-type" content="text/html;charset=UTF-8"> <link media="all" rel="stylesheet" href="/css/all.css"> <link rel="icon" type="image/png" href="/iau/figs/MPClogo16.png"> <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"> <script type="text/javascript" src="/js/jquery-latest.js"></script> <!-- <script type="text/javascript" src="/js/jquery.main.js"></script> --> <!-- <script type="text/javascript" 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Center</a></h1> <div class="area"> <!-- top-nav --> <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> <!-- search-form --> <div class="form-holder"> <!-- This commented code opens a new page for the search. --> <!--<form class="search-form" method="get" action="https://www.google.com/search" target="_blank">--> <form class="search-form" method="get" action="https://www.google.com/search"> <fieldset> <!--<label for="search">Search</label>--> <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"> <!-- <a href="https://twitter.com/MinorPlanetCtr"><span 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<li><a href="/iau/lists/Lists.html" class="nested">Lists and Plots</a> <ul> <li><a href="/iau/lists/MPLists.html">Minor Planets</a></li> <!--<ul> <li><a href="/iau/lists/t_atens.html">Atens</a></li> <li><a href="/iau/lists/t_apollos.html">Apollos</a></li> <li><a href="/iau/lists/t_amors.html">Amors</a></li> <li><a href="/iau/lists/t_centaurs.html">Centaurs and Scattered Disk Objects</a></li> <li><a href="/iau/lists/t_tnos.html">Transneptunian Objects</a></li> <li><a href="/iau/lists/t_others.html">Other Unusual Objects</a></li> <li><a href="/iau/lists/t_dangerous.html">Potentially Hazardous Asteroids</a></li> </ul>--> <li><a href="/iau/lists/CometLists.html">Comets</a></li> <!--<ul> <li><a href="/iau/lists/LastCometObs.html">Date of Last Observation</a></li> <li><a href="/iau/lists/LastYear.html">Designations from the Past Year</a></li> <li><a href="http://www.icq.eps.harvard.edu/CometMags.html">Comet Magnitude Estimates</a></li> <li><a href="/iau/lists/ClosestComets.html">Closest Approaches</a></li> <li><a href="/iau/lists/PeriodicCodes.html">Periodic Comets</a></li> </ul>--> <li><a href="/iau/lists/ObsCodesF.html">Observatory Codes</a></li> <li><a href="/iau/Animations/Animations.html">Animations</a></li> </ul> </li> <!--<li><%= link_to 'Summary', :controller => 'mpc', :action => 'summary' %></li>--> <li><a href='/mpc/obs_stats_2014_2018'>2014-18 NEO Obs Statistics</a></li> <li><a href='/mpc/summary'>Summary of Latest Data</a></li> <li><a href='/deprecated-pages.html'>Deprecated Webpages</a></li> </ul> </li> <li><a href="/data"><span>DATA</span></a></li> <li><a href="/"><span>NEW</span></a> <ul> <li><a href="/mpcops/new/developments/">Developments</a></li> <!-- <li><a href="/mpcops/new/releases/">New Releases</a></li> --> <li><a href="/mpcops/new/existing-upgrades/">Existing Upgrades</a></li> <li><a href="/mpcops/new/newsletters/">Newsletters</a></li> </ul> </li> <li><a href="/iau/MPCStatus.html"><span style="color:GoldenRod">STATUS</a></li> <li><a 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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> <!-- main --> <div id="main"> <!-- Navigation Menu block --> <li class="yuimenuitemlabel alert"> Processing <a href="/iau/info/MPCOpStatus.html">(Info)</a></li> <!-- Main content block --> <br> <p> <h2>MPCAT</h2> The following catalogue files are available following the batch of <a href="/iau/services/MPC.html"><i>Minor Planet Circulars</i></a> dated 2024 SEP. 13 . <ul> <li>Minor-planet orbit files <ul> <li><a href="/iau/ECS/MPCAT/mpn.txt">Numbered objects</a> <li><a href="/iau/ECS/MPCAT/mpu.txt">Multi-opposition unnumbered objects</a> <li><a href="/iau/ECS/MPCAT/mpo.txt">One-opposition objects (perturbed solutions)</a> <li><a href="/iau/ECS/MPCAT/mp1.txt">One-opposition objects (unperturbed solutions)</a> <li>Complete orbital sets (subsets of the above datafiles) are available for the following classes of object: <ul> <li><a href="/iau/ECS/MPCAT/unusual.txt">Unusual minor planets</a> (including NEOs) <li><a href="/iau/ECS/MPCAT/distant.txt">Distant minor planets</a> (Centaurs and transneptunians) </ul> <li>Orbit files incorporating the daily <i>MPEC</i> updates since the last batch of <i>MPCs</i> <a href="/iau/ECS/MPCAT/current/Current.html">are available</a>. </ul> <li>Identification files <ul> <li><a href="/iau/ECS/MPCAT/ids.txt">List of identifications and double designations for unnumbered objects</a> <!-- <li><a href="/iau/ECS/MPCAT/dbl.txt">List of double designations</a> --> <li><a href="/iau/ECS/MPCAT/numids.txt">List of identifications and double designations for numbered objects</a> </ul> <li>Complete observation files are available using <a href="/iau/ECS/MPCAT-OBS/MPCAT-OBS.html">MPCAT-OBS</a>. </ul> <hr><p> Information on the format of the <a href="/iau/info/OrbFormat.html"> orbits</a> is available. <!-- Body postamble --> </div> </div> </div> <!-- footer --> <footer id="footer"> <div class="holder"> <nav class="nav"> <ul> <li><a href="/">Home</a></li> <li><a href="/about">About</a></li> <!-- Contact link changed to Jira and name changed to helpdesk. 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