UCAC3 nocrossivo://org.gavo.dc/ucac3/q/icrscorrThe GAVO DC teamGAVO Data Centerhttp://vo.ari.uni-heidelberg.de/docs/GavoTiny.pngGAVO Data Center TeamMÃ¶nchhofstrasse 12-14, D-69120 Heidelberggavo@ari.uni-heidelberg.de++49 6221 54 1837starssurveysastrometryproper-motionsCorrections between UCAC3 and the ICRS as represented by PPMXL on a
grid of degrees, obtained by substracting UCAC3 from PPMXL in cones of
radius sqrt(2)/2 degrees around the given center position.Optical1ucac3UCAC3 nocrossThe Third US Naval Observatory CCD Astrograph catalogue (UCAC3) is an
all-sky catalgoue containing just over 100 million objects covering
about R = 8-16 mag. This table contains the original data content of
UCAC3 but leaves out the data objetained by crossmatching to other
catalogs.ucac3.icrscorrCorrections between UCAC3 and the ICRS as represented by PPMXL on a
grid of degrees, obtained by substracting UCAC3 from PPMXL in cones of
radius sqrt(2)/2 degrees around the given center position.65294nobNumber of objects the correction is based onmeta.numberintalphaCenter for field, RAdegpos.eq.ra;meta.mainfloatindexednullabledeltaCenter for field, Decdegpos.eq.dec;meta.mainfloatindexednullabled_alphaCorrection PPMXL-UCAC3 in alpha (Epoch 2000.0)degpos.eq.ra;arith.difffloatnullabled_deltaCorrection PPMXL-UCAC3 in delta (Epoch 2000.0)degpos.eq.dec;arith.difffloatnullabled_pmalphaCorrection PPMXL-UCAC3 in proper motion alpha*cos(delta)deg/yrpos.pm;pos.eq.ra;arith.difffloatnullabled_pmdeltaCorrection PPMXL-UCAC3 in deltadeg/yrpos.pm;pos.eq.dec;arith.difffloatnullable