Corrections between UCAC3 and PPMXL

Differences between UCAC3 and PPMXL in positions and proper motions, on an all-sky one-degree grid. At each gridpoint we give the differences X(PPMXL)- X(UCAC3) averaged over all stars in a sqrt(2)/2-degrees environment around the gridpoint given. The corrections given here should bring UCAC3 based astrometry to the ICRS.

Additional Info

Field Value
Creator GAVO Data Center
Discipline Astronomy
MetaDataAccess http://registry.euro-vo.org/oai.jsp?verb=GetRecord&metadataPrefix=oai_dc&identifier=ivo://org.gavo.dc/ucac3/q/corr
PublicationYear 2018
Publisher The GAVO DC team