159 Aemilia 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...

. This slowly rotating, dark asteroid has a 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....

 composition.

It orbits within the Hygiea family

Hygiea family

The Hygiea family of asteroids is a grouping of dark, carbonaceous C-type and B-type asteroids in outer main belt, the largest member of which is 10 Hygiea. About 1% of all known main belt asteroids belong to this family.-Characteristics:...

, although it may be an unrelated interloping asteroid, as it is too big to have arisen from the cratering process that most probably produced that family.

Aemilia was discovered by the brothers Paul Henry and Prosper Henry

Paul Henry and Prosper Henry

Paul-Pierre Henry and his brother Mathieu-Prosper Henry were French opticians and astronomers....

 on January 26, 1876. The credit for this discovery was given to Paul. It is probably named after the Via Aemilia

Via Aemilia

The Via Aemilia was a trunk Roman road in the north Italian plain, running from Ariminum , on the Adriatic coast, to Placentia on the river Padus . It was completed in 187 BC...

, a Roman road

Roman road

The Roman roads were a vital part of the development of the Roman state, from about 500 BC through the expansion during the Roman Republic and the Roman Empire. Roman roads enabled the Romans to move armies and trade goods and to communicate. The Roman road system spanned more than 400,000 km...

 in Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

 that runs from Piacenza

Piacenza

Piacenza is a city and comune in the Emilia-Romagna region of northern Italy. It is the capital of the province of Piacenza...

 to Rimini

Rimini

Rimini is a medium-sized city of 142,579 inhabitants in the Emilia-Romagna region of Italy, and capital city of the Province of Rimini. It is located on the Adriatic Sea, on the coast between the rivers Marecchia and Ausa...

.

Two stellar

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...

 occultation

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...

s by Aemilia have been recorded so far, the first in 2001 and the second in 2003.^{http://www.psi.edu/pds/resource/occ.html}