UCAC4 Catalogue
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https://b2find.eudat.eu/dataset/d8cd3792-fe05-511f-8081-0e1f3ba97f91
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资源简介：
UCAC4 is a compiled, all-sky star catalog covering mainly the 8 to 16 magnitude range in a single bandpass between V and R. Positional errors are about 15 to 20 mas for stars in...
