Astrographic Catalogue, +01 to +31 Degrees
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https://b2find.eudat.eu/dataset/4ef21976-ff1e-5795-b558-a7a0f2304199
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资源简介：
This machine-readable version of the Astrographic Catalogue (AC), zones +01 to +31 degrees is the result of the determination of mean values for position and magnitude at a mean...
