William Kwong Yu Yeung
Encyclopedia
William Kwong Yu Yeung is a Hong Kong
Hong Kong
Hong Kong is one of two Special Administrative Regions of the People's Republic of China , the other being Macau. A city-state situated on China's south coast and enclosed by the Pearl River Delta and South China Sea, it is renowned for its expansive skyline and deep natural harbour...

-born, Canadian
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

 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...

 with telescope
Telescope
A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation . The first known practical telescopes were invented in the Netherlands at the beginning of the 1600s , using glass lenses...

s based in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

.

He is a prolific discoverer of 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 and also discovered the 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...

 172P/Yeung
172P/Yeung
- External links :**...

. He also discovered the object J002E3
J002E3
J002E3 is the designation given to a supposed asteroid discovered by amateur astronomer Bill Yeung on September 3, 2002. Further examination revealed the object was not a rock asteroid but instead the S-IVB third stage of the Apollo 12 Saturn V rocket .When it was first discovered it was quickly...

, which was first thought to be an asteroid, but is now known to be part of a Saturn V
Saturn V
The Saturn V was an American human-rated expendable rocket used by NASA's Apollo and Skylab programs from 1967 until 1973. A multistage liquid-fueled launch vehicle, NASA launched 13 Saturn Vs from the Kennedy Space Center, Florida with no loss of crew or payload...

 Rocket that propelled Apollo 12
Apollo 12
Apollo 12 was the sixth manned flight in the American Apollo program and the second to land on the Moon . It was launched on November 14, 1969 from the Kennedy Space Center, Florida, four months after Apollo 11. Mission commander Charles "Pete" Conrad and Lunar Module Pilot Alan L...

 into space. He worked first from Rock Finder Observatory (IAU code 652) in Calgary
Calgary
Calgary is a city in the Province of Alberta, Canada. It is located in the south of the province, in an area of foothills and prairie, approximately east of the front ranges of the Canadian Rockies...

, Alberta
Alberta
Alberta is a province of Canada. It had an estimated population of 3.7 million in 2010 making it the most populous of Canada's three prairie provinces...

, and now works from Arizona
Arizona
Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

's Desert Beaver Observatory
Desert Beaver Observatory
The Desert Beaver Observatory is a private astronomical observatory near Eloy, Arizona. The asteroid 25893 Sugihara was discovered at the Desert Beaver Observatory by William Kwong Yu Yeung....

 (IAU code 919) and Desert Eagle Observatory
Desert Eagle Observatory
Desert Eagle Observatory is a private amateur astronomical observatory, situated near Benson, Arizona. Operated by William Kwong Yu Yeung, the observatory's primary purpose is the observation and discovery of asteroids, which include but are not limited to comets and Near Earth Asteroids...

(IAU code 333).

External links

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