Dorsa Ewing

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Dorsa Ewing

Lat: 10.2°S, Long: 39.4°W, Length: 141 km, Height: km, Rükl: 41

external image normal_Dorsa-Ewing_LO-IV-137H_LTVT.JPG
LO-IV-137H The Dorsa Ewing defined by the position and diameter given above (taken from the on-line IAU Planetary Gazetteer) extends from the upper left to the lower right of this Lunar Orbiter image. LTO 75C1 suggests it should include an additional ridge to the southeast (well outside the present view). The 4-km circular crater in the upper right (to the west of the unnamed hills) is Scheele. The slightly smaller crater to its southwest, near Dorsa Ewing is Letronne C. The pattern along the left margin is calibration data. To its right, the mountainous area is the east rim of Letronne.


LPOD Photo Gallery Lunar Orbiter Images Apollo Images

  • Apollo 16's vertical metric (mapping) Fairchild camera frame AS16-M-2992 shows Dorsa Ewing during local post sunrise circumstances.
  • Research Danny Caes


(LAC zone 75C1) LAC map Geologic map LTO map Topophotomap


Description: Wikipedia

Dorsa Ewing

Additional Information

At 11° south/ 36°15' west (near Dorsa Ewing and north of Rima Herigonius) is a cluster of bowl-shaped craterlets which is an interesting target for telescopic observers and photographers of minute features in the southern part of Oceanus Procellarum (see also: Apollo 16 Preliminary Science Report, P.29-91, P.29-80. Apollo 17 Preliminary Science Report, P. 31-4). - DannyCaes Nov 18, 2007 (calls "Ewing's mob").


William Maurice; American geophysicist (1906-1974).
  • Dorsum Ewing was among the many provisional dorsa names appearing on NASA’s LTO charts that were approved by the IAU “as now assigned and printed” (on those charts) in IAU Transactions XVIB. The labels on LTO 75C1 assign the name to two distinct ridges, the first corresponds to the present IAU position and diameter (as illustrated above), while the other starts to its southwest. The second ridge would extend into LTO provinces 75C4 and possibly 75C3, but since those LTO charts were never published, it is impossible to know how far the name was intended to extend. - Jim Mosher

LPOD Articles

Parallel Ridges (note: the portion of Dorsa Ewing shown above is in shadow in this LPOD)


APOLLO OVER THE MOON; A VIEW FROM ORBIT, Chapter 4: The Maria (Part 2), Figure 68.