Ptolemaeus is an ancient lunar impact crater close to the center of the near side, named for Claudius Ptolemy, the Greco-Roman writer, mathematician, astronomer, geographer and astrologer. It measures approximately 154 kilometers in diameter. T. W. Webb called it "a magnificent lake, whose surface at sunrise or sunset is occasionally seen all roughened with ridges like waves".
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Sources
External links
- Ptolemaeus at The Moon Wiki
- I-556 Ptolemaeus - USGS Geological Atlas of the Moon, 1966
- - one of three craters making up a Triad - that includes Ptolemaeus