Purple Mountain Observatory Explained
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 (Chinese: 张钰哲, 1902–1986, also known as Y. C. Chang).
By the late 1980s, increasing 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 (in Delingha), Ganyu, Xuyi, Honghe (in Jiamusi), and Qingdao.
The 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 (Tsuchinshan), also known as Comet 1977 X,, and C/2023 A3 (Tsuchinshan-ATLAS). They are named after the Wade–Giles transliteration of the name. 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 (CNEOS), based at the Xuyi Station in Xuyi, Jiangsu,[1] 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.[2] 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 (NEOs) and discovered four new ones: the Apollo asteroid, and the three Amor asteroid,, and .
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 1965 | |
| 2209 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 1979 | |
| 2355 Nei Monggol | 30 October 1978 | | |
| 2363 Cebriones | 4 October 1977 | |
| 2380 Heilongjiang | 18 September 1965 | |
| 2387 Xi'an | 17 March 1975 | |
| 2398 Jilin | 24 October 1965 | |
| 2425 Shenzhen | 17 March 1975 | |
| 2456 Palamedes | 30 January 1966 | |
| 2503 Liaoning | 16 October 1965 | |
| 2505 Hebei | 31 October 1975 | |
| 2510 Shandong | 10 October 1979 | |
| 2514 Taiyuan | 8 October 1964 | |
| 2515 Gansu | 9 October 1964 | |
| 2539 Ningxia | 8 October 1964 | |
| 2547 Hubei | 9 October 1964 | |
| 2592 Hunan | 30 January 1966 | |
| 2617 Jiangxi | 26 November 1975 | |
| 2631 Zhejiang | 7 October 1980 | |
| 2632 Guizhou | 6 November 1980 | |
| 2655 Guangxi | 14 December 1974 | |
| 2693 Yan'an | 3 November 1977 | |
| 2719 Suzhou | 22 September 1965 | |
| 2729 Urumqi | 18 October 1979 | |
| 2743 Chengdu | 21 November 1965 | |
| 2752 Wu Chien-Shiung | 20 September 1965 | |
| 2778 Tangshan | 14 December 1979 | |
| 2789 Foshan | 6 December 1956 | | |
| 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 1981 | |
| 2963 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 | | |
| 3388 Tsanghinchi | 21 December 1981 | |
| 3405 Daiwensai | 30 October 1964 | |
| 3421 Yangchenning | 26 November 1975 | |
| 3443 Leetsungdao | 26 September 1979 | |
| 3462 Zhouguangzhao | 25 October 1981 | |
| 3463 Kaokuen | 3 December 1981 | |
| 3476 Dongguan | 28 October 1978 | |
| 3494 Purple Mountain | 7 December 1980 | |
| 3502 Huangpu | 9 October 1964 | |
| 3509 Sanshui | 28 October 1978 | |
| 3513 Quqinyue | 16 October 1965 | |
| 3542 Tanjiazhen | 9 October 1964 | |
| 3543 Ningbo | 11 November 1964 | |
| 3556 Lixiaohua | 30 October 1964 | |
| 3560 Chenqian | 3 September 1980 | |
| 3570 Wuyeesun | 14 December 1979 | |
| 3609 Liloketai | 13 November 1980 | |
| 3611 Dabu | 20 December 1981 | |
| 3613 Kunlun | 10 November 1982 | |
| 3643 Tienchanglin | 29 October 1978 | |
| 3650 Kunming | 30 October 1978 | |
| 3678 Mongmanwai | 20 January 1966 | |
| 3704 Gaoshiqi | 20 December 1981 | |
| 3729 Yangzhou | 1 November 1983 | |
| 3746 Heyuan | 8 October 1964 | | |
| 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 | | |
| 5390 Huichiming | 19 December 1981 | |
| 5537 Sanya | 9 October 1964 | |
| 5538 Luichewoo | 9 October 1964 | |
| 5539 Limporyen | 16 October 1965 | |
| 5709 Tamyeunleung | 12 October 1977 | |
| 5892 Milesdavis | 23 December 1981 | |
| 6 November 1980 | |
| 30 October 1964 | |
| 7811 Zhaojiuzhang | 23 February 1982 | |
| 3 December 1981 | |
| 8126 Chanwainam | 20 January 1966 | |
| 8256 Shenzhou | 25 October 1981 | |
| 31 December 1964 | |
| 8992 Magnanimity | 14 October 1980 | |
| 9512 Feijunlong | 13 February 1966 | |
| 9517 Niehaisheng | 3 November 1977 | |
| 9 November 1964 | |
| 10017 Jaotsungi | 30 October 1978 | |
| 7 December 1980 | |
| 14 December 1974 | |
| 9 November 1964 | |
| 14 October 1980 | |
| 11 November 1964 | |
| 23408 Beijingaoyun | 12 October 1977 | | |
List of discoveries by the PMO NEO Survey Program
PMO NEO Survey discoveries: 646 | see | |
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 | | |
| 210231 Wangdemin | 11 September 2007 | |
| 210232 Zhangjinqiu | 11 September 2007 | |
| 210292 Mayongsheng | 6 October 2007 | |
| 12 August 2007 | |
| 212795 Fangjiancheng | 9 October 2007 | |
| 212796 Guoyonghuai | 9 October 2007 | |
| 212797 Lipei | 9 October 2007 | |
| 11 September 2007 | |
| 214883 Yuanxikun | 11 September 2007 | |
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| 456677 Yepeijian | 11 September 2007 | |
| 11 September 2007 | |
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| 1 September 2013 | |
| 9 February 2008 | |
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| 27 October 2009 | |
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| 24 August 2011 | |
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| 31 December 2008 | |
| 19 August 2010 | |
| 5 November 2007 | | |
| 5 November 2007 | |
| 29 February 2008 | |
| 16 March 2009 | |
| 4 April 2010 | |
| 27 November 2013 | |
| 11 September 2007 | |
| 21 March 2015 | |
| 13 August 2007 | |
| 27 January 2009 | |
| 10 August 2010 | |
| 8 April 2010 | |
| 21 September 2007 | |
| 17 September 2007 | |
| 13 September 2009 | |
| 13 September 2009 | |
| 7 September 2015 | |
| 10 August 2010 | |
| 25 October 2011 | |
| 11 September 2007 | |
| 11 September 2007 | |
| 20 October 2015 | | |
See also
External links
Notes and References
- Web site: Xuyi Observation Station, Purple Mountain Observatory. Purple Mountain Observatory. 26 February 2015.
- Web site: Zhao. Haibin. The new NEO survey project - Chinese Near Earth Object Survey (CNEOS). Lunar and Planetary Institute: Asteroids, Comets, Meteors (2008 conference). 26 February 2015. etal.
