Purple Mountain Observatory

Purple Mountain Observatory
Purple Mountain Observatory Nanjing facilities
Alternative namesCradle of Modern Astronomy
OrganizationChinese Academy of Sciences
Observatory code 330 
LocationXuanwu District, Nanjing, Jiangsu
Coordinates32°03′54″N 118°49′47″E / 32.064946°N 118.829677°E / 32.064946; 118.829677
Altitude267 m (876 ft)
Established1934
Websitewww.pmo.cas.cn
Telescopes
  • Hainan Island station
  • Purple Mountain Observatory, Xuyi Station
  • Purple Mountain Observatory, Yao'an Station 
Location of Purple Mountain Observatory
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Purple Mountain Observatory, also known as Zijinshan Astronomical Observatory, is a dual-use astronomical observatory operated by the Chinese Academy of Sciences, located at Purple Mountain east of Nanjing. The observatory conducts both open science, such as calculating the official Chinese calendar, and classified space domain awareness activities for the PLA Aerospace Force. The observatory's long-range precision mechanical tracking radars used for space surveillance are managed by PLAASF Base 26 as the Space Target and Debris Observation and Research Center.


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