Claudia is a small crater that formerly defined the prime meridian of the asteroid 4 Vesta.

The crater was named after the Roman Vestal Virgin Claudia by the Dawn mission team; the name Claudia was officially approved by the IAU on 30 September 2011.

[4][1] Claudia was chosen because it is small, sharply defined, easy to find, and near the equator.

This results in a more logical set of mapping quadrants than the IAU coordinate system, which drifts over time due to an error in calculating the position of the pole, and is based on the 200 km Olbers Regio, which is so poorly defined that it is not even visible to the Dawn spacecraft.

[citation needed] The Claudia coordinate system was the coordinate system used by the Dawn mission team, NASA, and the International Astronomical Union's Gazetteer of Planetary Nomenclature (GPN).