Jisho

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紫金山天文台
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Wikipedia definition
1. Purple Mountain Observatory​Purple Mountain Observatory, also known as Zijinshan Astronomical Observatory, is an astronomical observatory located on the Purple Mountain in Nanjing, China. The long time director of the observatory (from 1950 to 1984) was Zhang Yuzhe (张钰哲) (Y. C. Chang). The observatory discovered the periodic comets 60P/Tsuchinshan and 62P/Tsuchinshan, and also the non-periodic C/1977 V1 (Tsuchinshan), also known as Comet 1977 X.
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