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<ri:Resource created="2023-08-01T12:40:41Z" status="active" updated="2025-05-19T09:50:00Z" version="1.2" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v1.0" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ivoa.net/xml/ConeSearch/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/ConeSearch.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogService"><title>Millions of Optical Radio/X-ray Associations (MORX) v2</title><shortName>V/158</shortName><identifier>ivo://CDS.VizieR/V/158</identifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Flesch E.W.</name></creator><date role="Updated">2025-01-09T07:52:04Z</date><date role="Created">2023-08-01T12:40:41Z</date><contact><name>CDS support team</name><address>CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France</address><email>cds-question@unistra.fr</email></contact></curation><content><subject>surveys</subject><subject>x-ray-sources</subject><subject>radio-sources</subject><subject>photometry</subject><description>The MORX (Millions of Optical - Radio/X-ray Associations) v2 catalog presents 3115575 optical objects which are calculated as being 40%-100% likely to be associated to radio or X-ray sources, as at 30 June 2023.</description><source format="bibcode">2024OJAp....7E...6F</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/V/158</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic 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