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Lat: 16.7°S, Long: 66.8°W, Diam: 45 km, Depth: 0.53 km, Rükl: 50, Lower Imbrian

external image Cruger-LOIV-168-h2.jpg
Lunar Orbiter IV-168-h2
Partially seen in this frame is the rim of a large unnamed crater which is surrounding the much smaller dark crater Cruger in an eccentric way.


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Concentric Crater number 42 in C.A.Wood's list (published in 1978) must be one of the tiny craterlets between Cruger and Cruger E east-southeast of it. On the Hi-Res scan of Lunar Orbiter 4's photograph LOIV-168-h2 there is indeed something noticeable which looks like a Concentric Crater (immediately east of Cruger). See: LOIV-168-h2, near the frame's lower right corner.
Research: Danny Caes


(LAC zone 92A1)LAC map Geologic map


Description: Elger

(IAU Directions) CRUGER.--A regular ring-plain W. of Fontana, 30 miles in diameter, with a dark floor, without detail, and comparatively low bright walls. There is a smaller but very conspicuous ring-plain (Cruger a) on the E. of it, to which runs a branch of the great Sirsalis cleft.

Description: Wikipedia


Additional Information


Peter Crüger or Krüger (1580—1639) was a mathematician, astronomer and polymath. Krüger published treatises on many scientific subjects and contributed to the progress of trigonometry, geography and astronomy, also with the development of astronomical instruments.

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Wood, C.A. 7/2006. False Volcanoes on the Moon. S&T 112:(1):66-67