I/268ivo://CDS.VizieR/I/268CDSZacharias N.Urban S.E.Zacharias M.I.Hall D.M.Wycoff G.L.,Rafferty T.J.Germain M.E.Holdenried E.R.Pohlman J.W.Gauss F.S.,Monet D.G.Winter L.2024-08-26T07:54:09Z2002-03-13T12:47:22ZCDS support team

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

cds-question@unistra.frsurveysastrometryproper-motionsThe UCAC1 is a high density, highly accurate, astrometric catalog of over 27 million stars in the Southern Hemisphere in the magnitude range of about 8 to 16. This version is the first release of an ongoing project to observe the entire sky; for up-to-date information see the Web page at http://ad.usno.navy.mil/ad/ucac/ . The UCAC1 is a preliminary catalog. By avoiding all "problem cases" (see details in the "intro.txt" file) it is not complete. Positions, proper motions and errors are provided, together with approximate magnitudes in the 579-642nm range. The positional precision is about 20 mas for 9 to 14 mag and 70 mas at 16th mag. The errors of the proper motions are very heterogeneous, ranging from 1 to 35 mas/yr. The UCAC is an observational program using the U.S. Naval Observatory Twin Astrograph and a 4kx4k CCD camera, covering just over 1 square degree per frame with a scale of 0.9"/pixel. Observations started in January 1998 at Cerro Tololo Interamerican Observatory (CTIO) and are continuing. This first catalog contains data observed through 07 November 1999 at which time about 80% of the Southern Hemisphere was completed. Full sky coverage is expected by early 2003 after a re-location of the instrument to the Northern Hemisphere planned for early 2001. The UCAC1 is also available on CD-ROM from the US Naval Observatory. Direct request to nz@pisces.usno.navy.mil with UCAC1 in the subject string. Notice: The data are freely available; however, any publication utilizing these data should make proper reference to USNO and the paper by Zacharias et al. (2000AJ....120.2131Z)2000AJ....120.2131Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/I/268CatalogResearchIsServedByTAP VizieR generic serviceIsPreviousVersionOfI/289IsServedByConesearch servicerelated-tohttp://ad.usno.navy.mil/ucac/ : the UCAC Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=I/268https://vizier.iucaa.in/viz-bin/VizieR-2?-source=I/268http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=I/268https://vizier.cds.unistra.fr/viz-bin/votable?-source=I/268https://vizier.iucaa.in/viz-bin/votable?-source=I/268http://vizieridia.saao.ac.za/viz-bin/votable?-source=I/268GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table I/268/out (* output from the UCAC1)https://vizier.cds.unistra.fr/viz-bin/conesearch/I/268/out?https://vizier.iucaa.in/viz-bin/conesearch/I/268/out?http://vizieridia.saao.ac.za/viz-bin/conesearch/I/268/out?GETtext/xml+votable180.050000true10.5493662-89.96995980.0055555555555555561/32-34 2/65 80 140-142 3/257 272 326 328 330 572 618 4/1025 1037 1073 1076-1078 1092-1094 1096-1098 1298 1316-1318 1328 1408 2292 2296 2298 2344 2346 2432 2434 2440 2442 2464 2466 2478 5/4097 4109 4145 4157 4289 4301 4316-4318 4337 4380-4382 4396-4398 4400-4402 4416 4418 4480-4482 5186 5198 5234 5240 5276-5278 5296-5298 5300 5304 5316 5320 5636 5638 5640-5642 5672 5674-5675 5760 9172-9174 9176-9178 9188-9190 9196 9248 9250 9256 9258 9344 9346 9352 9354 9764 9766 9772 9774 9860 9862 9868 9870 9906 9918 6/16384-16385 16387 16396-16397 16399 16432-16433 16435 16444-16445 16447 16576-16577 16579 16588-16589 16591 16624-16625 16627 16636-16637 16639 17152-17153 17155 17164-17165 17167 17200-17201 17203 17212-17213 17215 17276-17278 17344-17345 17347 17360-17362 17532-17533 17596-17598 17612-17614 17616-17618 17632-17634 17668-17670 17676 17696 17932-17934 17936-17938 17952-17954 20738 20750 20786 20798 20930 20942 20964-20966 20968-20970 21116-21118 21196-21198 21204 21208 21220-21222 21224-21226 21268-21270 21272 21284 21288 21312 22548-22550 22556 22572 22576 22656 22664 22666-22667 22692 22694-22695 22712 22714 23044-23045 23048 36700-36702 36716 36720 36764 36766 36788 36792 36794 36864 36866 36872 36874 36896 36898 36904 36906 37380 37382 37388 37390 37412 37414 37420 37422 38928 38930 38936 38938 38960 38962 38968 38970 39444 39446 39452 39454 39476 39478 39484 39486 39618 39630 39666 396783.0856370201066456e-19 3.4272990383579255e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/I/268?format=asciidefaultI/268/out* output from the UCAC11UCAC[00000001,27425433] UCAC designationmeta.id;meta.mainintprimaryRAICRSRight ascension (degrees), ICRS, at "Epoch"degpos.eq.ra;meta.mainDEICRSDeclination (degrees), ICRS, at "Epoch"degpos.eq.dec;meta.maine_RAICRSMean error on RAdegmasstat.error;pos.eq.rainte_DEICRSMean error on DEdegmasstat.error;pos.eq.decintUCmagMagnitude in UCAC system (579-642nm)magphot.mag;em.optfloatEpochMean Epoch of observation (of position)yrtime.epochdoubleindexedpmRAProper motion in RA(*cos(Dec))mas/yrpos.pm;pos.eq.radoublepmDEProper motion in Decmas/yrpos.pm;pos.eq.decdoublee_pmRAMean error on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloate_pmDEMean error on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatNoNumber of observationsmeta.numberintNcNumber of cataloguesmeta.numberint