Galactic Bulge Valinhos Observatory Catalog
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https://b2find.eudat.eu/dataset/5a25387c-4aac-5e2f-b315-9f91517342a5
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The definition, construction and realization of a reference system is one of the oldest and most fundamental tasks of astronomy. Currently, the ICRS (International Celestial...
参考系统的定义、构建与实现是天文学最古老且最基础的任务之一。当前，国际天球参考系统（International Celestial Reference System，ICRS）……
