Proper Motions, UBV Photometry, Four Open Clusters
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https://b2find.eudat.eu/dataset/52451d3a-c5e1-53a7-8a27-4c44b5d8c87a
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资源简介：
Proper motions were determined for 2169 stars with limiting magnitude B = 16.5 mag and located within a 60x60' area centered at RA = 23h54.2min, Dec = 60deg57arcmin (1950.0)....
