Tsuchinshan
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Tsuchinshan
The Purple Mountain Observatory (), also known as Zijinshan Astronomical Observatory, is an astronomical observatory located on the Purple Mountain in the east of Nanjing. The observatory is responsible for calculating the official Chinese calendar of mainland China. 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 (, 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 ...
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62P/Tsuchinshan
62P/Tsuchinshan, also known as Tsuchinshan 1, is a periodic comet first discovered January 1, 1965 at the Purple Mountain Observatory in Nanjing. It last came to perihelion on 25 December 2023 at around apparent magnitude 8, and was then from Earth and 110 degrees from the Sun. During the 2004 perihelion passage the comet brightened to about apparent magnitude 11. The comet was not observed during the 2011 unfavorable apparition since the perihelion passage occurred when the comet was on the far side of the Sun. During the 2023 apparition it brightened to 8th magnitude. On 2049 April 1 the comet will pass about from Mars. See also *List of numbered comets References External links * 62P/Tsuchinshan 1– Seiichi Yoshida @ aerith.net Elements and Ephemeris for 62P/Tsuchinshan– Minor Planet Center 62P/Tsuchinshan at the Minor Planet Center The Minor Planet Center (MPC) is the official body for observing and reporting on minor planets under the auspices of the ...
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60P/Tsuchinshan
60P/Tsuchinshan, also known as Tsuchinshan 2, is a periodic comet in the Solar System with an orbital period of 6.79 years. Tsuchinshan is the Wade-Giles transliteration corresponding to the pinyin ''Zǐjīn Shān'' '' 紫金山'', which is Mandarin Chinese for "Purple Mountain". It was discovered at the Purple Mountain Observatory, Nanjing, China on 11 January 1965 with a magnitude estimated as a very faint 15. The elliptical orbit was computed to give a perihelion date of 9 February 1965 with an orbital period of 6.69 years. Revised calculations predicted the next perihelion would be on 28 November 1971 and Elizabeth Roemer of the University of Arizona successfully relocated the comet with the 154-cm reflector at Catalina. It was also observed in 1978, 1985, 1991-1992, and 1998-1999. The comet peaked at about apparent magnitude 16.3 in 2012. On 29 December 2077 the comet will pass from Mars. See also * List of numbered comets References External links Orbital simula ...
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Zhang Yuzhe
Zhang Yuzhe (; 16 February 1902 – 21 July 1986), also known as Yu-Che Chang, was a Chinese astronomer and director of the Purple Mountain Observatory who is widely regarded as the father of modern Chinese astronomy. He studied the light curves of asteroids, and thus their rotation periods. He also researched the variable star CZ Cassiopeiae and the evolution of the orbit of Comet Halley. Zhang discovered three comets and is credited under the name Y. C. Chang by the Minor Planet Center for the discovery of one minor planet, the outer main-belt asteroid 3789 Zhongguo. Biography Zhang was born in Fuzhou in the Minhou county, Fujian province in 1902. In 1919, he gained entrance to Tsinghua University. Graduating in 1923, he traveled to the United States where he began graduate studies at the University of Chicago in 1925, receiving his Ph.D. in 1929. Later that year, he returned to China and accepted a teaching post at the National Central University in Nanjing, China (now k ...
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Purple Mountain
Purple Mountain may refer to: China * Purple Mountain (Nanjing), a mountain in Nanjing, Jiangsu Ireland * Purple Mountain (Kerry), a mountain in County Kerry United States * Purple Mountain (Alaska), a mountain in Alaska * Purple Mountain (Colorado), a mountain in Colorado * Purple Peak (Colorado), a mountain in Colorado * Purple Mountain (Oregon), a mountain in Oregon * Purple Mountain (Washington), a mountain in Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ... * Purple Mountain (Wyoming), a mountain in Yellowstone National Park, Wyoming See also * Purple Mountains, an American indie rock band {{geodis ...
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Ganyu District
Ganyu District () is a suburban district under the administration of Lianyungang, Jiangsu Province, China. It contains the province's northernmost point and is located along the Yellow Sea coast where the coastline takes a sharp turn toward the southeast, and borders the Shandong prefecture-level cities of Linyi and Rizhao to the north. History The modern incarnation of Ganyu District was established in 280 AD during the reunification of China following the conquest of Eastern Wu by the Jin dynasty. It was previously an entity under the jurisdiction of Langya Commandery between its establishment by the Qin dynasty in 221 BC and 198 AD. Culture Unlike the rest of northern Jiangsu, where Jianghuai Mandarin is the predominant dialect, the locals of Ganyu speak the Ganyu dialect of Jiaoliao Mandarin, which is also native to eastern Shandong and most of the Liaodong peninsula. Demographics According to the Fifth National Population Census of the People's Republic of China, ther ...
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Asteroid
An asteroid is a minor planet—an object larger than a meteoroid that is neither a planet nor an identified comet—that orbits within the Solar System#Inner Solar System, inner Solar System or is co-orbital with Jupiter (Trojan asteroids). Asteroids are rocky, metallic, or icy bodies with no atmosphere, and are broadly classified into C-type asteroid, C-type (carbonaceous), M-type asteroid, M-type (metallic), or S-type asteroid, S-type (silicaceous). The size and shape of asteroids vary significantly, ranging from small rubble piles under a kilometer across to Ceres (dwarf planet), Ceres, a dwarf planet almost 1000 km in diameter. A body is classified as a comet, not an asteroid, if it shows a coma (tail) when warmed by solar radiation, although recent observations suggest a continuum between these types of bodies. Of the roughly one million known asteroids, the greatest number are located between the orbits of Mars and Jupiter, approximately 2 to 4 astronomical unit, AU ...
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Pinyin
Hanyu Pinyin, or simply pinyin, officially the Chinese Phonetic Alphabet, is the most common romanization system for Standard Chinese. ''Hanyu'' () literally means 'Han Chinese, Han language'—that is, the Chinese language—while ''pinyin'' literally means 'spelled sounds'. Pinyin is the official romanization system used in China, Singapore, Taiwan, and by the United Nations. Its use has become common when transliterating Standard Chinese mostly regardless of region, though it is less ubiquitous in Taiwan. It is used to teach Standard Chinese, normally written with Chinese characters, to students in mainland China and Singapore. Pinyin is also used by various Chinese input method, input methods on computers and to lexicographic ordering, categorize entries in some Chinese dictionaries. In pinyin, each Chinese syllable is spelled in terms of an optional initial (linguistics), initial and a final (linguistics), final, each of which is represented by one or more letters. Initi ...
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Wade–Giles
Wade–Giles ( ) is a romanization system for Mandarin Chinese. It developed from the system produced by Thomas Francis Wade during the mid-19th century, and was given completed form with Herbert Giles's '' A Chinese–English Dictionary'' (1892). The romanization systems in common use until the late 19th century were based on the Nanjing dialect, but Wade–Giles was based on the Beijing dialect and was the system of transcription familiar in the English-speaking world for most of the 20th century. Both of these kinds of transcription were used in postal romanizations (romanized place-names standardized for postal uses). In mainland China, Wade–Giles has been mostly replaced by Hanyu Pinyin, which was officially adopted in 1958, with exceptions for the romanized forms of some of the most commonly used names of locations and persons, and other proper nouns. The romanized name for most locations, persons and other proper nouns in Taiwan is based on the Wade–Giles der ...
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Chinese Postal Romanization
Postal romanization was a system of transliterating place names in China developed by postal authorities in the late 19th and early 20th centuries. For many cities, the corresponding postal romanization was the most common English-language form of the city's name from the 1890s until the 1980s, when postal romanization was replaced by pinyin, but the system remained in place in Taiwan until 2002. In 1892, Herbert Giles created a romanization system called the Nanjing dialect, Nanking syllabary. The Imperial Maritime Customs Post Office would cancel postage with a stamp that gave the city of origin in Latin letters, often romanized using Giles's system. In 1896, the Customs Post was combined with other postal services and renamed the Chinese Imperial Post. As a national agency, the Imperial Post was an authority on Chinese place names. When the Wade–Giles system became widespread, some argued that the post office should adopt it. This idea was rejected at a conference held in ...
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Comet
A comet is an icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing. This produces an extended, gravitationally unbound atmosphere or Coma (cometary), coma surrounding the nucleus, and sometimes a Comet tail, tail of gas and dust gas blown out from the coma. These phenomena are due to the effects of solar radiation and the outstreaming solar wind plasma acting upon the nucleus of the comet. Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times Earth's diameter, while the tail may stretch beyond one astronomical unit. If sufficiently close and bright, a comet may be seen from Earth without the aid of a telescope and can Subtended angle, subtend an arc of up to 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures and religion ...
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Minor Planet
According to the International Astronomical Union (IAU), a minor planet is an astronomical object in direct orbit around the Sun that is exclusively classified as neither a planet nor a comet. Before 2006, the IAU officially used the term ''minor planet'', but that year's meeting IAU definition of planet, reclassified minor planets and comets into dwarf planets and Small Solar System body, small Solar System bodies (SSSBs).Press release, IAU 2006 General Assembly: Result of the IAU Resolution votes
International Astronomical Union, August 24, 2006. Accessed May 5, 2008.
In contrast to the eight official planets of the Solar System, all minor planets fail to clearing the neighborhood, clear their orbital neighborhood. Minor planets include asteroids (near- ...
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