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(English version,
Wikipedia copyright)
Cassini
is a lunar impact crater that is
located in the Palus Nebularum, at the eastern end of Mare Imbrium. To the
northeast is the Promontorium Agassiz, the southern tip of the Montes Alpes
mountain range. South by south-east of Cassini is the Theaetetus crater. To
the northwest is the lone peak Mons Piton.
The
floor of the crater is flooded, and is likely as old as the surrounding
maria.
The surface is peppered with a multitude of impacts, including a pair of
significant craters contained entirely within the rim. Cassini A is the
larger of these two, and it lies just north-east of the crater center. A
hilly ridge area runs from this inner crater toward the south-east. Near the
south-west rim of Cassini is the smaller crater Cassini B.
The
walls of this crater are narrow and irregular in form but remain intact
despite the lava flooding. Beyond the crater rim is a significant and
irregular outer rampart.
For unknown
reasons, this crater was omitted from early maps of the Moon. This crater is
not of recent origin, however, so the omission was most likely an error on
the part of the map-makers.
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