The fifth U.S. Naval Observatory CCD Astrograph Catalog (UCAC5)UCAC 5ivo://org.gavo.dc/ucac5/q/coneThe GAVO DC teamZacharias, N.Finch, C.Frouard, J.2017-02-27T00:00:00ZGAVO Data Center TeamMönchhofstrasse 12-14, D-69120 Heidelberggavo@ari.uni-heidelberg.de++49 6221 54 1837surveysastrometryproper-motions New 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 2 mas/yr
(R = 11 to 15 mag), and about 5 mas/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.
The database table uses actual NULLs for missing photometry, and all
angular coordinates have been homogenised to degrees.https://dc.zah.uni-heidelberg.de/ucac5/q/cone/infoIsServedByGAVO Data Center TAP servicehttp://dc.zah.uni-heidelberg.de/ucac5/q/cone/scs.xml?https://dc.zah.uni-heidelberg.de/ucac5/q/cone/scs.xml?GETapplication/x-votable+xmlRARight Ascension (ICRS decimal)degpos.eq.rarealDECDeclination (ICRS decimal)degpos.eq.decrealSRSearch radiusdegrealgmagGaia DR1 G magnitudemagphot.mag;em.optrealumagMean UCAC model magnitude (20 in the source is mapped to NULL)magphot.mag;em.opt.VrealresponseformatFile format requested for output.meta.code.mimecharmaxrecMaximum number of records returned. Pass 0 to retrieve service parameters.integerverbExhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns.integer180100000true208.82855-59.702760.001http://dc.zah.uni-heidelberg.de/ucac5/q/cone/formhttps://dc.zah.uni-heidelberg.de/ucac5/q/cone/formhttp://dc.zah.uni-heidelberg.de/ucac5/q/cone/availabilityhttps://dc.zah.uni-heidelberg.de/ucac5/q/cone/availabilityhttp://dc.zah.uni-heidelberg.de/ucac5/q/cone/capabilitieshttps://dc.zah.uni-heidelberg.de/ucac5/q/cone/capabilitieshttp://dc.zah.uni-heidelberg.de/ucac5/q/cone/tableMetadatahttps://dc.zah.uni-heidelberg.de/ucac5/q/cone/tableMetadatahttp://dc.zah.uni-heidelberg.de/taphttps://dc.zah.uni-heidelberg.de/tap0/0-1157023 570238.277e-20 4.138e-19https://dc.zah.uni-heidelberg.de/ucac5/q/cone/coverageOpticalucac5The fifth U.S. Naval Observatory CCD Astrograph Catalog (UCAC5) New 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 2 mas/yr
(R = 11 to 15 mag), and about 5 mas/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.
The database table uses actual NULLs for missing photometry, and all
angular coordinates have been homogenised to degrees.
ucac5.main New 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 2 mas/yr
(R = 11 to 15 mag), and about 5 mas/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.
The database table uses actual NULLs for missing photometry, and all
angular coordinates have been homogenised to degrees.110000000source_idGaia source IDmeta.id;meta.mainlongraGaia DR1 Right Ascension at epoch J2015.0degpos.eq.ra;meta.maindoubleindexednullabledecGaia DR1 Declination at epoch J2015.0degpos.eq.dec;meta.maindoubleindexednullablera_errorStandard error of ra (with cos δ applied); from Gaia DR1.degstat.error;pos.eq.rafloatnullabledec_errorStandard error of dec; from Gaia DR1.degstat.error;pos.eq.decfloatnullablesrcflagsSource for the star: 1 = TGAS, 2 = other UCAC-Gaia star, 3 = other NOMADmeta.codeshortnu1Number of images used for UCAC mean positionmeta.numbershortepuMean UCAC epoch (i.e. epoch for ra_ucac and de_ucac)yrtime.epochfloatnullablera_ucacMean UCAC RA at epoch epu on Gaia reference framedegpos.eq.radoublenullablede_ucacmean UCAC Dec at epoch epu on Gaia reference framedegpos.eq.decdoublenullablepmraPM(RA), cos(δ) applied, computed from UCAC and Gaia DR1 positions.deg/yrpos.pm;pos.eq.rafloatnullablepmdePM(Dec), computed from UCAC positions and Gaia DR1 positions.deg/yrpos.pm;pos.eq.decfloatnullablesigpmrStandard error of proper motion in RA*cos(Dec)deg/yrstat.error;pos.pm;pos.eq.rafloatnullablesigpmdStandard error of proper motion in Decdeg/yrstat.error;pos.pm;pos.eq.decfloatnullablegmagGaia DR1 G magnitudemagphot.mag;em.optfloatnullableumagMean UCAC model magnitude (20 in the source is mapped to NULL)magphot.mag;em.opt.VfloatnullablermagNOMAD photographic R mag (0 and 30 in the source are mapped to NULL)magphot.mag;em.opt.Rfloatnullablejmag2MASS J magnitude (0 and 30 in the source are mapped to NULL)magphot.mag;em.IR.Jfloatnullablehmag2MASS H magnitude (0 and 30 in the source are mapped to NULL)magphot.mag;em.IR.Hfloatnullablekmag2MASS K_s magnitude (0 and 30 in the source are mapped to NULL)magphot.mag;em.IR.Kfloatnullable