UCAC3 nocrossucac3.icrscorrivo://org.gavo.dc/ucac3/q/icrscorrThe GAVO DC teamGAVO Data Centerhttp://vo.ari.uni-heidelberg.de/docs/GavoTiny.png2009-10-01T00:00:00ZGAVO Data Center TeamMönchhofstrasse 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.http://dc.zah.uni-heidelberg.de/tableinfo/ucac3.icrscorrOptical1ucac3UCAC3 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