150 Nuwa is a large main-belt

Asteroid belt

The asteroid belt is the region of the Solar System located roughly between the orbits of the planets Mars and Jupiter. It is occupied by numerous irregularly shaped bodies called asteroids or minor planets...

 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...

. It is composed of primitive carbonaceous

Carbonate

In chemistry, a carbonate is a salt of carbonic acid, characterized by the presence of the carbonate ion, . The name may also mean an ester of carbonic acid, an organic compound containing the carbonate group C2....

 chondritic

Chondrite

Chondrites are stony meteorites that have not been modified due to melting or differentiation of the parent body. They formed when various types of dust and small grains that were present in the early solar system accreted to form primitive asteroids...

 material. The surface is exceedingly dark.

It was discovered by J. C. Watson

James Craig Watson

James Craig Watson was a Canadian-American astronomer born in the village of Fingal, Ontario Canada. His family relocated to Ann Arbor, Michigan in 1850....

 on October 18, 1875, and named after Nüwa

Nüwa

Nüwa is a goddess in ancient Chinese mythology best known for creating mankind and repairing the wall of heaven.-Primary sources:...

, the Chinese

Chinese mythology

Chinese mythology is a collection of cultural history, folktales, and religions that have been passed down in oral or written tradition. These include creation myths and legends and myths concerning the founding of Chinese culture and the Chinese state...

 creator goddess.

On December 17, 1999, a star

Star

A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...

 was occulted

Occultation

An occultation is an event that occurs when one object is hidden by another object that passes between it and the observer. The word is used in astronomy . It can also refer to any situation wherein an object in the foreground blocks from view an object in the background...

by Nuwa.
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Image taken on September 25, 26, 27 2009 from Slooh Robotic Telescope (Teide - Canary Islands):



Image taken on October 3, 2009 from Slooh Robotic Telescope (Teide - Canary Islands):



Image taken on October 23, 2009 from Slooh Robotic Telescope (Teide - Canary Islands):