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About Catharina
Catharina is an ancient lunar impact crater located in the southern highlands. British astronomer T. W. Webb calls it "irregular in character". It lies in a rugged stretch of land between the Rupes Altai scarp to the west and Mare Nectaris in the east. To the west-northwest is the crater Tacitus, and the lava-flooded Beaumont lies to the east along the shore of Mare Nectaris. To the south-southeast is Polybius.
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