Mare Cognitum

Mare Cognitum
Mare Cognitum. Fra Mauro is the gray region in the upper right.
Coordinates	10°00′S 23°06′W / 10.0°S 23.1°W / -10.0; -23.1Coordinates: 10°00′S 23°06′W / 10.0°S 23.1°W / -10.0; -23.1
Diameter	376 km[1]
Eponym	Sea That Has Become Known, or Known Sea

Mare Cognitum (the "sea that has become known") is a lunar mare located in a basin or large crater which sits in the second ring of the Procellarum basin. The basin material is of the Lower Imbrian epoch, while the basaltic mare material is of the Upper Imbrian epoch. To the northwest of the mare is the Montes Riphaeus mountain range, part of the rim of the buried crater or basin containing the mare. It is so named for all of the space probes that had landed there previously (Luna 5, Ranger 7, Surveyor 3, Apollo 12).

The Fra Mauro formation, the landing site of Apollo 14, is located near Mare Cognitum.

References

1. ^ "Moon Mare/Maria". Gazetteer of Planetary Nomenclature. USGS Astrogeology. http://planetarynames.wr.usgs.gov/SearchResults?target=MOON&featureType=Mare%2C%20maria. Retrieved 2010-08-20.