J/A+AS/146/169ivo://CDS.VizieR/J/A+AS/146/169CDSGaladi-Enriquez D.Trullols E.Jordi C.2000-09-30T00:28:36Z2000-09-30T00:28:27ZCDS support team

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

cds-question@unistra.frinfrared-photometryvisible-astronomyWide-band photometryTable 4 contains astrometric (alpha, delta) and photometric (UBVRI) data for 681 secondary standard stars in the neighbourhood of several Landolt standard stars. Several columns contain information related to the origin and quality of the photometry. Cross-identifications with USNO-A2.0 catalogue (<I/252>) are given. Further cross-identifications are given in notes.2000A&AS..146..169Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/146/169CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/252 : The USNO-A2.0 Catalogue (Monet+ 1998)II/183 : UBVRI Photometric Standards (Landolt, 1992)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/146/169https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/146/169http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/146/169https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/146/169https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/146/169http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/146/169GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+AS/146/169/table4 (UBVRI-CCD secondary standard stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/146/169/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/146/169/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/146/169/table4?GETtext/xml+votable180.050000true7.224583330.41313890.0055555555555555566/4635 17840 18861 20313 20315 21844 21914 22120-22121 22938 22960 23145 23789https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/146/169?format=asciiOpticalInfrareddefaultJ/A+AS/146/169/table4UBVRI-CCD secondary standard starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField numberobs.fieldintStarStar number inside its fieldmeta.id;meta.mainintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainVmagMagnitude in V bandmagphot.mag;em.opt.Vfloate_VmagError of V magnitudemagstat.errorfloatB-V? Colour index B-Vmagphot.color;em.opt.B;em.opt.Vfloatnullablee_B-V? Error of B-V colour indexmagstat.errorfloatnullableU-B? Colour index U-Bmagphot.color;em.opt.U;em.opt.Bfloatnullablee_U-B? Error of U-B colour indexmagstat.errorfloatnullableV-RColour index V-Rmagphot.color;em.opt.V;em.opt.Rfloate_V-RError of V-R colour indexmagstat.errorfloatV-IColour index V-Imagphot.color;em.opt.V;em.opt.Ifloate_V-IError of V-R colour indexmagstat.errorfloato_StarObservational runs with useful datameta.numberinto_VmagNumber of useful measurements in Vmeta.numberintUSNO-A2.0? Cross-identification with USNO-A2.0 (<I/252>)meta.idcharNotes? Callings to table notes.datmeta.notecharJ/A+AS/146/169/notesNotes to Table 4recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCalling[ *a-t] Calling from Table 4meta.id;meta.maincharField? Field numberobs.fieldintnullableStar? Star number inside its fieldmeta.id.part;meta.mainintnullableTextCross-identifications and commentsmeta.notechar