I/223ivo://CDS.VizieR/I/223CDSUrban S.E.Jackson E.S.Corbin T.E.1999-01-01T09:06:26Z1998-03-05T22:01:38ZCDS support team

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

cds-question@unistra.frThe U.S. Naval Observatory is in the process of making new reductions of the Astrographic Catalogue (AC) using a modern reference system, the ACRS, which represents the system of the FK5. The data from the Algiers Zone, whose plates are centered between declinations -2 and +4 degrees (eq. 1900), have been analyzed for scale, rotation, tilt, coma, magnitude equation, radial distortion and distortions introduced by the use of reseaux in the Carte du Ciel program. The result is a positional catalog of over 199,000 stars on eq. J2000.0, epoch of observation. The plate were exposed between 1891 and 1912. For cross-identification purposes, all stars have been matched with the Tycho Input Catalog (revised); those numbers have been added to each record.unpublished (1995)https://cdsarc.cds.unistra.fr/viz-bin/cat/I/223CatalogResearchIsServedByTAP VizieR generic serviceIsPreviousVersionOfI/247|AC2000IsServedByConesearch servicerelated-toI/171 : the Astrographic Catalog Reference Stars (ACRS, Corbin et al., 1991)I/197 : Tycho Input Catalogue, Revised version (TIC, Egret et al., 1992)I/219 : Cape AC Zone (-41 to -51) Reduced to ACRS (Urban & Corbin, 1995)I/222 : San Fernando AC Zone (-3 to -9) Reduced to ACRS (Urban et al., 1995)I/224 : Oxford 1 AC Zone (+25 to +31) Reduced to ACRS (Urban et al., 1996)I/225 : Oxford 2 AC Zone (+32 to +33) Reduced to ACRS (Urban et al., 1996)I/226 : Vatican AC Zone (+55 to +64) Reduced to ACRS (Urban et al., 1996)I/227 : Paris AC Zone (+18 to +24) Reduced to ACRS (Urban et al., 1996)I/228 : Bordeaux AC Zone (+11 to +17) Reduced to ACRS (Urban et al., 1996)I/231 : Uccle AC Zone (+05 to +11) Reduced to ACRS (Urban et al., 1996)I/232 : Toulouse AC Zone (+34 to +35) Reduced to ACRS (Urban et al., 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=I/223https://vizier.iucaa.in/viz-bin/VizieR-2?-source=I/223http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=I/223https://vizier.cds.unistra.fr/viz-bin/votable?-source=I/223https://vizier.iucaa.in/viz-bin/votable?-source=I/223http://vizieridia.saao.ac.za/viz-bin/votable?-source=I/223GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table I/223/algac (Algiers AC stars reduced using ACRS)https://vizier.cds.unistra.fr/viz-bin/conesearch/I/223/algac?https://vizier.iucaa.in/viz-bin/conesearch/I/223/algac?http://vizieridia.saao.ac.za/viz-bin/conesearch/I/223/algac?GETtext/xml+votable180.050000true0.000216675.208697220.005555555555555556https://cdsarc.cds.unistra.fr/viz-bin/moc/I/223?format=asciiOpticaldefaultI/223/algacAlgiers AC stars reduced using ACRSACRS?ACRS numbermeta.idintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension J2000.0 (hours)pos.eq.ra;meta.mainindexedDEJ2000[+-] Declination J2000.0 (sign)pos.eq.dec;meta.mainindexedBmagMagnitude from image diametermagphot.mag;em.opt.BfloatEp(RA)Mean epoch of position, RAyrtime.epochdoubleEp(Dec)Mean epoch of position, Decyrtime.epochdoubleNumNumber of images usedmeta.numberinte_RAs?Mean error (Right Ascension)arcsecstat.errorfloatnullablee_DEs?Mean error (Declination)arcsecstat.errorfloatnullableISN*Internal Star Number IDmeta.id;meta.mainintTICr?Tycho Input Catalog (rev) numbermeta.idlongnullableNoteID*[1/412]? Note detailed in file notesmeta.noteintnullableI/223/notesNotes on the AC/Tycho matchesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoteID[1/412]+= Number from NoteID in algac.datmeta.noteintprimaryNoteFootnote for this starmeta.notechar