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
PublicationYear 2018
Publisher The GAVO DC team