Corrections between UCAC3 and PPMXL
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https://b2find.eudat.eu/dataset/93a9e9bd-55d5-561c-865f-d7d1eb15f9e9
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资源简介：
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...
