Purple Mountain Observatory The Purple Mountain Observatory , also known as Zijinshan Astronomical Observatory is an astronomical observatory located on the Purple Mountain in the east of Nanjing .Description The Purple Mountain Observatory was established in 1934 funded by the Nationalist Government of the Republic of China and administered by Academia Sinica . The longtime director of the observatory from 1950 to 1984 was Chinese astronomer Zhang Yuzhe .light pollution in Nanjing meant Purple Mountain was no longer viable as a working observatory. It has since shifted its focus to public education , with much of the actual scientific work being carried out in its five branch observatories located at Qinghai , Ganyu , Xuyi , Honghe, and Qingdao .Minor Planet Center credits the observatory, simply referred to as Nanking , with the discovery of 149 minor planets between 1955 and 1983, while the observatory's PMO NEO Survey Program is credited with more than 600 discoveries between 2006 and 2013.Discoveries The observatory discovered the periodic comets 60P/Tsuchinshan and 62P/Tsuchinshan , as well as the non-periodic , also known as Comet 1977 X, and. Many asteroids were also discovered, including the Trojan asteroids 2223 Sarpedon , 2260 Neoptolemus , 2363 Cebriones , 2456 Palamedes , and the eponymous 3494 Purple Mountain .Near-Earth object survey The Chinese Near-Earth Object Survey , based at the Xuyi Station in Xuyi, Jiangsu , started observations in 2006. It uses a 1:04=1:20=1:80 m Schmidt telescope equipped with a 4K × 4K CCD detector with the drift-scanning function. As of August 2012, the program has observed 149,971 asteroids, found 1,279 new provisional designation asteroids, and cataloged 251 numbered asteroids including five Jupiter trojans, two Hildian , and one Phocaea asteroid . The program has also observed the position of 824 near-Earth objects and discovered four new ones: the Apollo asteroid, and the three Amor asteroid,, and, still unnumbered as of 2016. List of discovered minor planets (1955–1983) A total of 149 minor planets were discovered by the Purple Mountain Observatory between 1955 and 1983.1125 China 30 October 1957 1802 Zhang Heng 9 October 1964 1888 Zu Chong-Zhi 9 November 1964 1972 Yi Xing 9 November 1964 2012 Guo Shou-Jing 9 October 1964 2027 Shen Guo 9 November 1964 2045 Peking 8 October 1964 2077 Kiangsu 18 December 1974 2078 Nanking 12 January 1975 2085 Henan 20 December 1965 2162 Anhui 30 January 1966 2169 Taiwan 9 November 1964 2184 Fujian 9 October 1964 2185 Guangdong 20 November 1965 2197 Shanghai 30 December 19652209 Tianjin 28 October 1978 2215 Sichuan 12 November 1964 2223 Sarpedon 4 October 1977 2230 Yunnan 29 October 1978 2255 Qinghai 3 November 1977 2260 Neoptolemus 26 November 1975 2263 Shaanxi 30 October 1978 2336 Xinjiang 26 November 1975 2344 Xizang 27 September 19792355 Nei Monggol 30 October 1978
2790 Needham 19 October 1965 2851 Harbin 30 October 1978 2886 Tinkaping 20 December 1965 2899 Runrun Shaw 8 October 1964 2903 Zhuhai 23 October 19812963 Chen Jiageng 9 November 1964 3011 Chongqing 26 November 1978 3014 Huangsushu 11 October 1979 3024 Hainan 23 October 1981 3028 Zhangguoxi 9 October 1978 3048 Guangzhou 8 October 1964 3051 Nantong 19 December 1974 3088 Jinxiuzhonghua 24 October 1981 3089 Oujianquan 3 December 1981 3136 Anshan 18 November 1981 3139 Shantou 11 November 1980 3171 Wangshouguan 19 November 1979 3187 Dalian 10 October 1977 3206 Wuhan 13 November 1980 3221 Changshi 2 December 1981 3239 Meizhou 29 October 1978 3241 Yeshuhua 28 November 1978 3297 Hong Kong 26 November 1978 3335 Quanzhou 1 January 1966 3340 Yinhai 12 October 1979
3763 Qianxuesen 14 October 1980 3812 Lidaksum 11 January 1965 3844 Lujiaxi 30 January 1966 3901 Nanjingdaxue 7 April 1958 3960 Chaliubieju 20 January 1955 4047 Chang'E 8 October 1964 4073 Ruianzhongxue 23 October 1981 4245 Nairc 29 October 1981 4273 Dunhuang 29 October 1978 4360 Xuyi 9 October 1964 4431 Holeungholee 28 November 1978 4562 Poleungkuk 21 October 1979 4566 Chaokuangpiu 27 November 1981 4651 Wongkwancheng 31 October 1957 4730 Xingmingzhou 7 December 1980 4913 Wangxuan 20 September 1965 4925 Zhoushan 3 December 1981 4988 Chushuho 6 November 1980 5013 Suzhousanzhong 9 November 1964 5045 Hoyin 29 October 1978 5198 Fongyunwah 16 January 1975 5217 Chaozhou 13 February 1966 5267 Zegmott 13 February 1966 5273 Peilisheng 16 February 1982 5389 Choikaiyau 29 October 1981
List of discoveries by the PMO NEO Survey Program Several hundred minor planets were discovered by the observatory's PMO NEO Survey Program from 2006 to 2013.18 August 2007 171448 Guchaohao 11 September 2007 175633 Yaoan 9 October 2007 185535 Gangda 28 November 2007 185538 Fangcheng 14 December 2007 185640 Sunyisui 1 March 2008 187707 Nandaxianlin 2 March 2008 187709 Fengduan 3 March 2008 188973 Siufaiwing 3 March 2008 192178 Lijieshou 10 March 2007 199947 Qaidam 16 April 2007 199953 Mingnaiben 18 April 2007 200002 Hehe 6 May 2007 200003 Aokeda 19 May 2007 202784 Gangkeda 29 February 2008 204836 Xiexiaosi 16 August 2007 204839 Suzhouyuanlin 16 August 2007 207681 Caiqiao 16 August 2007 207715 Muqinshuijiao 11 September 2007 207716 Wangxichan 11 September 2007 207723 Jiansanjiang 11 September 2007 17 September 2007 207809 Wuzuze 9 October 2007 210210 Songjian 16 August 2007 210230 Linyuanpei 11 September 2007
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