According to one of the other threads here yesterday, the probe going to Ceres won't get there until March. It is already sending back photos showing Ceres rotating--there is a bright white spot on the surface so it easy to tell how fast it is rotating.
Ceres was discovered on Jan. 1, 1801 (the first night of the 19th century), by Giuseppe Piazzi, a native of Sicily. The goddess Ceres was the patron goddess of ancient Sicily.