Aliacensis Y (Moon)

Satellite Feature of Aliacensis

Named after D'Ailly, Pierre Aliacensis - French geographer (1350-1420).

Aliacensis is a lunar impact crater that is located in the rugged southern highlands. To the southwest is Walther, and Apianus is to the northeast. It is from the Nectarian period, which lasted from 3.92 to 3.85 billion years ago. (wikipedia entry)