How good is Ptolemaeus?

Ptolemaeus has a Lunoo score of 8.8/10. This score is based on AI-powered analysis of category fit, feature coverage, pricing signals, public reception, and recency.

Where does Ptolemaeus rank on Lunoo?

Ptolemaeus is ranked #37 in Lunoo's Best Crater rankings with a score of 8.1/10.

Is Ptolemaeus worth it in 2026?

Ptolemaeus scores 8.8/10 in the Crater category on Lunoo. Compare it with alternatives to find the best fit for your needs.

What are the best alternatives to Ptolemaeus?

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How does Ptolemaeus compare to competitors?

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Ptolemaeus

8.10

Great

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Crater Large Impact Moon Central Pre Nectarian

description Ptolemaeus Overview

Ptolemaeus is a massive, ancient lunar impact crater, notable for its 164-kilometer diameter and its characteristically flat, lava-flooded interior floor.

insights Why this score

Ptolemaeus ranks #36 of 165 in the Crater ranking, behind Popigai, ahead of Upheaval Dome.

help Ptolemaeus FAQ

Why is the interior of the Ptolemaeus crater so flat?

The massive interior floor is characteristically flat because it was completely flooded by ancient basaltic lava. This left a smooth, dark surface with very few smaller impact craters compared to other lunar highlands.

How big is the Ptolemaeus crater?

Ptolemaeus is an immense lunar impact crater with a diameter of approximately 164 kilometers. Its sheer size makes it easily visible from Earth using binoculars.

Where on the Moon is Ptolemaeus located?

It is located in the central region of the Moon's near side, just south of the lunar equator. It sits right next to the similarly massive craters Alphonsus and Arzachel.

Who is the Ptolemaeus crater named after?

It is named after Claudius Ptolemy, the Greco-Roman astronomer and mathematician from the 2nd century AD. The naming convention reflects its historical importance in early lunar mapping.

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