I/340ivo://CDS.VizieR/I/340CDSZacharias N.Finch C.Frouard J.2023-12-19T13:53:44Z2017-03-16T08:18:00ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveysastrometryproper-motionsNew astrometric reductions of the US Naval Observatory CCD Astrograph Catalog (UCAC) all-sky observations were performed from first principles using the TGAS stars in the 8 to 11 magnitude range as reference star catalog. Significant improvements in the astrometric solutions were obtained and the UCAC5 catalog of mean positions at a mean epoch near 2001 was generated. By combining UCAC5 with Gaia DR1 data new proper motions on the Gaia coordinate system for over 107 million stars were obtained with typical accuracies of 1 to 2mas/yr (R=11 to 15mag), and about 5mas/yr at 16th mag. Proper motions of most TGAS stars are improved over their Gaia data and the precision level of TGAS proper motions is extended to many millions more, fainter stars. External comparisons were made using stellar cluster fields and extragalactic sources. The TGAS data allow us to derive the limiting precision of the UCAC x, y data, which is significantly better than 1/100 pixel.2017AJ....153..166Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/I/340CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/297 : NOMAD Catalog (Zacharias+ 2005)I/337 : Gaia DR1 (Gaia Collaboration, 2016)I/339 : Hot Stuff for One Year (HSOY) (Altmann+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=I/340https://vizier.iucaa.in/viz-bin/VizieR-2?-source=I/340http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=I/340https://vizier.cds.unistra.fr/viz-bin/votable?-source=I/340https://vizier.iucaa.in/viz-bin/votable?-source=I/340http://vizieridia.saao.ac.za/viz-bin/votable?-source=I/340GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table I/340/ucac5 (UCAC5 catalog (107,758,513 sources))https://vizier.cds.unistra.fr/viz-bin/conesearch/I/340/ucac5?https://vizier.iucaa.in/viz-bin/conesearch/I/340/ucac5?http://vizieridia.saao.ac.za/viz-bin/conesearch/I/340/ucac5?GETtext/xml+votable180.050000true45.00484690.01979690.005555555555555556Hips catalogue for table I/340/ucac5https://hipscat.cds.unistra.fr/HiPSCatService/I/340/ucac50/0-11 6/1.1166583743361574e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/I/340?format=asciidefaultI/340/ucac5UCAC5 catalog (107,758,513 sources)RAJ2000UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira)degpos.eq.ra;meta.mainDEJ2000UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc)degpos.eq.dec;meta.mainSrcIDgaiaGaia source ID (srcid)meta.id;meta.mainRAgaiaGaia right ascension (ICRS) at epoch 2015.0 (rag) (1)degpos.eq.rae_RAgaiarms uncertainty on RAgaia (erg) (1)masstat.errorfloatDEgaiaGaia declination (ICRS) at epoch 2015.0 (dcg) (1)degpos.eq.dece_DEgaiarms uncertainty on DEgaia (edg) (1)masstat.errorfloatOrg[1/3] TGAS/NOMAD flag (flg) (2)meta.codeintNuNumber of images used for mean position (nu)meta.numberintEPucacUCAC epoch (epu)yrtime.epochdoublepmRAUCAC/Gaia proper motion in RA*cosDE (pmur)mas/yrpos.pm;pos.eq.rafloate_pmRArms uncertainty on pmRA (pmer)mas/yrstat.error;pos.pm;pos.eq.rafloatpmDEUCAC/Gaia proper motion in DE (pmud)mas/yrpos.pm;pos.eq.decfloate_pmDErms uncertainty on pmDE (pmed)mas/yrstat.error;pos.pm;pos.eq.decfloatGmagGaia G magnitude (gmag)magphot.mag;em.opt.Rfloatf.mag? Means UCAC model magnitude (umag)magphot.mag;em.optfloatnullableRmag? Photographic R magnitude from NOMAD (rmag)magphot.mag;em.opt.RfloatnullableJmag? 2MASS J magnitude (jmag)magphot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitude (hmag)magphot.mag;em.IR.HfloatnullableKmag? 2MASS K magnitude (kmag)magphot.mag;em.IR.Kfloatnullable