3443 Leetsungdao
Encyclopedia
3443 Leetsungdao is a Mars-crossing asteroid discovered on 26 September 1979 at the Purple Mountain Observatory
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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 was Zhang Yuzhe Purple Mountain Observatory , also known as Zijinshan Astronomical Observatory,...
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