Asteroid Asteroid Asteroids are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones... s discovered: 1
5384 Changjiangcun 5384 Changjiangcun 5384 Changjiangcun is an inner Main-Belt minor planet. It was discovered by Zhang Jiaxiang at Purple Mountain Observatory on November 11, 1957. It was named for Changjiangcun, a village in Jiangsu.-External links:*...	November 11, 1957	as "C.-H. Chang"

Zhang Jiaxiang (born in Oct. 1932), also known as Chia-Hsiang Chang, is a Chinese astronomer

Astronomer

An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...

 affiliated with Purple Mountain Observatory

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,...

, Chinese Academy of Sciences, and president of the Minor Planet Foundation at that observatory.

He discovered asteroid

Asteroid

Asteroids are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones...

 (5384) 1957 VA (credited as C.-H. Chang).

Biography

Zhang Jiaxiang, astronomer, was born in Oct. 1932 in Nanjing

Nanjing

' is the capital of Jiangsu province in China and has a prominent place in Chinese history and culture, having been the capital of China on several occasions...

, Jiangsu province. In 1951, he first joined the Purple Mountain Observatory as a technician, supervised by director Zhang Yuzhe

Zhang Yuzhe

Zhang Yuzhe or Yu-che Chang was a Chinese astronomer who is widely regarded as the father of modern Chinese astronomy....

.

In 1957, Zhang Yuzhe and Zhang Jiaxiang worked together and published a paper discussing the orbit of artificial satellite. From 1965 to 1972, Prof. Zhang led a research group to accomplish the project of orbit determination of the first Chinese artificial satellite and thereafter the systematic studies of the orbit of Chinese synchronous satellite. In total, they have discovered more than 150 internationally numbered new minor planets and four comet

Comet

A comet is an icy small Solar System body that, when close enough to the Sun, displays a visible coma and sometimes also a tail. These phenomena are both due to the effects of solar radiation and the solar wind upon the nucleus of the comet...

s. In the 1990s, he accurately predicted a series of collision times between 19 comet nuclei and Jupiter, based on his self-established numerical model of the solar system

Solar System

The Solar System consists of the Sun and the astronomical objects gravitationally bound in orbit around it, all of which formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago. The vast majority of the system's mass is in the Sun...

 dynamics. In the most recent 10 years, he was named as the chief scientist, leading a project of “Construction of Near Earth Object Telescope，” which has been successfully completed.

To recognize his contribution in his field, Harvard Smithsonian Observatory in Boston

Boston

Boston is the capital of and largest city in Massachusetts, and is one of the oldest cities in the United States. The largest city in New England, Boston is regarded as the unofficial "Capital of New England" for its economic and cultural impact on the entire New England region. The city proper had...

named an asteroid they discovered “Jiaxiang” in 1991.