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<ri:Resource created="2004-06-29T22:16:33Z" 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>AGK3U</title><shortName>I/176</shortName><identifier>ivo://CDS.VizieR/I/176</identifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Bucciarelli B.</name></creator><creator><name>Daou D.</name></creator><creator><name>Lattanzi M.G.</name></creator><creator><name>Taff L.G.</name></creator><date role="Updated">2012-09-24T07:48:49Z</date><date role="Created">2004-06-29T22:16:33Z</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>astrometry</subject><subject>proper-motions</subject><description>The AGK3U is a updated version of the AGK3 catalog in which new positions from the Palomar "Quick V" survey have been added to improve the AGK3 proper motions. It provides FK4/B1950.0 positions and proper motions for 170,464 stars north of -2.5 degrees declination, at an average epoch of 1950.62. The proper motions have a two dimensional formal mean error of 0.82 arcsec/century. In addition to the positions and proper motions, the catalog contains the AGK3 number, the mean errors of the positions and proper motion in each coordinate, the photographic magnitude, the spectral type, and the Palomar plate position, epoch, and mean error.</description><source format="bibcode">1992AJ....103.1689B</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/I/176</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic service</relatedResource></relationship><relationship><relationshipType>IsServedBy</relationshipType><relatedResource>Conesearch service</relatedResource></relationship><relationship><relationshipType>related-to</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/I/69">I/69 : AGK3 Catalog</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/I/146">I/146 : Catalog of Positions and Proper Motions (PPM-North),</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/I/220">I/220 : The Guide Star Catalog (GSC), V1.1</relatedResource></relationship></content><rights>https://cds.unistra.fr/vizier-org/licences_vizier.html</rights><capability><interface xsi:type="vr:WebBrowser"><accessURL use="full">https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=I/176</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=I/176</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=I/176</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=I/176</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=I/176</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South 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ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/I/176?format=ascii</footprint><waveband>Optical</waveband></coverage><tableset><schema><name>default</name><table><name>I/176/catalog</name><description>*The AGK3U Catalogue</description><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>AGK3</name><description>AGK3 Number (1)</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="7*">char</dataType><flag>primary</flag></column><column><name>RAB1950</name><description>Right Ascension B1950</description><ucd>pos.eq.ra;meta.main</ucd><flag>indexed</flag></column><column><name>DEB1950</name><description>Declination B1950</description><ucd>pos.eq.dec;meta.main</ucd><flag>indexed</flag></column><column><name>e_RAB1950</name><description>Mean error of right ascension*cos(delta).</description><unit>arcsec</unit><ucd>stat.error;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_DEB1950</name><description>Mean error of the declination.</description><unit>arcsec</unit><ucd>stat.error;pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>pmRA</name><description>Proper motion in RA (* cos(delta)) (2)</description><unit>10mas/yr</unit><ucd>pos.pm;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>pmDE</name><description>Proper motion in declination (2)</description><unit>10mas/yr</unit><ucd>pos.pm;pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_pmRA</name><description>Mean error of pmRA (2)</description><unit>10mas/yr</unit><ucd>stat.error;pos.pm;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_pmDE</name><description>Mean error of pmDE (2)</description><unit>10mas/yr</unit><ucd>stat.error;pos.pm;pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>EpRA</name><description>Mean epoch for the right ascension (3)</description><unit>yr</unit><ucd>time.epoch</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>EpDE</name><description>Mean epoch for the declination (3)</description><unit>yr</unit><ucd>time.epoch</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>Model</name><description>[0/8] Model flag (4)</description><ucd>meta.code.error;stat.param;meta.modelled</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>s0RA</name><description>sigma zero of least square solution in RA.</description><ucd>stat.error;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>s0DE</name><description>sigma zero of least square solution in Dec.</description><ucd>stat.error;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>mpg</name><description>Photographic magnitude from PPM &lt;I/146&gt;</description><unit>mag</unit><ucd>phot.mag;em.opt</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Sp</name><description>Spectral type from the PPM &lt;I/146&gt;</description><ucd>src.spType</ucd><dataType xsi:type="vs:VOTableType" arraysize="2*">char</dataType></column><column><name>Type</name><description>[sm ] Type of adopted solution (5)</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="5*">char</dataType></column><column><name>RAGSC</name><description>Right Ascension B1950 in GSC</description><ucd>pos.eq.ra</ucd></column><column><name>DEGSC</name><description>Declination B1950 in GSC</description><ucd>pos.eq.dec</ucd></column><column><name>EpGSC</name><description>Epoch of GSC observation (3)</description><unit>yr</unit><ucd>time.epoch</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>ErrGSC</name><description>Mean error per coordinate in GSC</description><unit>arcsec</unit><ucd>stat.error;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>_RA.icrs</name><description>Right ascension (ICRS) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data)</description><ucd>pos.eq.ra</ucd><flag>nullable</flag><flag>indexed</flag></column><column><name>_DE.icrs</name><description>Declination (ICRS) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data)</description><ucd>pos.eq.dec</ucd><flag>nullable</flag><flag>indexed</flag></column></table></schema></tableset></ri:Resource>