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Lat: 66.9°S, Long: 10.0°W, Diam: 93 km, Depth: 5.14 km, Rükl: 73

external image normal_Gruemberger_LO-IV-130H_LTVT.JPG
LO-IV-130H The 20-km crater on the southwest floor is Gruemberger A. Cysatus is partially visible in the upper right. The dark band across the image is a flaw in the development of the Lunar Orbiter film.


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(LAC zone 137B1) USGS Digital Atlas PDF


Description: Elger

(IAU Directions) GRUEMBERGER.--A much larger and more irregular ring-plain, nearly 40 miles from wall to wall, on the W. side of Cysatus. Its E. border rises nearly 14,000 feet above the interior, which includes an abnormally deep crater, the bottom of which is 20,000 feet below the crest of the E. wall, and several small depressions and ridges. The inner W. slope is finely terraced.

Description: Wikipedia


Additional Information

Depth data from Kurt Fisher database
  • Westfall, 2000: 5.14 km
  • Viscardy, 1985: 4.3 km
  • Cherrington, 1969: 4.11 km


  • Christoph Grienberger (1561-1636), an Austrian Jesuit astronomer whose last name was spelled in many variants. Grienberger corresponded with both Galileo and Biancani regarding the possible existence of mountains on the Moon (which the latter rejected).
  • According to Whitaker (p. 219), this feature was labeled Gruemberger Soc. I on Riccioli's map, with the "Soc. I" being deleted to form the modern name. - Jim Mosher

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