159 Aemilia is a large main-belt asteroid. Aemilia was discovered by the French brothers Paul Henry and Prosper Henry on January 26, 1876. The credit for this discovery was given to Paul. It is probably named after the Via Aemilia, a Roman road in Italy that runs from Piacenza to Rimini.
This slowly rotating, dark asteroid has a primitive carbonaceous composition, based upon its classification as a C-type asteroid.<ref name="Pravec2012"/> Photometric observations made in 2006 gave a rotation period of about 25 hours. Subsequent observations made at the Oakley Observatory in Terre Haute, Indiana found a light curve period of 16.37 ± 0.02 hours, with variation in brightness of 0.24 ± 0.04 in magnitude.<ref name="DitteonHawkins2007"/>
It orbits within the Hygiea family, 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. Two stellar occultations by Aemilia have been recorded so far, the first in 2001 and the second in 2003.
(159) Aemilia sections
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