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Lat: 17.2°S, Long: 52.3°W, Diam: 38 km, Depth: 1.01 km, Rükl: 51

external image zupus-lo-iv_156_h2.jpg
Lunar Orbiter IV 156-H2 submitted by Paolo Amoroso.
Note the pronounced mountain on the eastern part of Zupus's rim. Perhaps we could call it Mount Zupus.


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Description: Elger

(IAU Directions) ZUPUS.--A formation about 12 miles in diameter with a dark floor, situated in the hilly region N.W. of Mersenius.

Description: Wikipedia


Additional Information

Depth data from Kurt Fisher database
  • Westfall, 2000: 1.01 km
  • Cherrington, 1969: 1.34 km

The eastern part of Zupus's floor shows some sort of layered appearance. This appearance is only detectable on the WAC - Big Shadows representation in the online LROC Quickmap.


  • Giovanni Battista Zupi (Zupus) (circa 1590–1650) was an Italian astronomer and mathematician. In 1639, Giovanni was the first person to discover that the planet Mercury had orbital phases, just like the Moon and Venus. His observations demonstrated that the planet orbited around the Sun. This occurred just 30 years after Galileo's first telescope design, and Giovanni's was only slightly more powerful.
  • Zupus is one of Giovanni Baptista Riccioli's names, see page 215 of Ewen A. Whitaker's book Mapping and Naming the Moon (Appendix G).
  • The dark spot which was called Zupus by Riccioli might have been the southern part of Michel Florent Van Langren's Flumen S. Augustini, this according to Van Langren's map on page 41 of Ewen A. Whitaker's book Mapping and Naming the Moon. The Strasbourg forgery of Van Langren's map (page 43) also shows the name Flumen S. Augustini. See also page 197 (Appendix D: Van Langren's nomenclature).- DannyCaes Jun 4, 2013
  • Could we give the mountain at the eastern rim of Zupus a name? Perhaps Zupus Alpha? Or Mons Zupus? Mount Zupus?

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