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d'Alembert (with Slipher on the southwestern part of its floor and rim)

(d'Alembert was formerly known as D'Alembert)

Lat: 50.8°N, Long: 163.9°E, Diam: 248 km, Depth: km, Rükl: (farside), Nectarian

external image normal_d-alembert-clem.jpg
d'Alembert, with Slipher at the southwestern part of its floor and rim.
The small crater on the southwestern part of Slipher's rim is Slipher S.
It's as if Slipher is always trying to escape out of d'Alembert, pulling part of d'Alembert with it. The same thing seems to happen within Slipher (with Slipher S).


LPOD Photo Gallery Lunar Orbiter Images


(LAC zone 18D4) USGS Digital Atlas PDF


Description: Wikipedia


Additional Information

d'Alembert's floor seems to be the centre of a basin which is unofficially known as U1, according to the farside map in the page Lunar Basins List.


  • Named for Jean le Rond d'Alembert (November 16, 1717 - October 29, 1783), a French mathematician, mechanician, physicist and philosopher noted for his contributions to the lunar theory. He was also co-editor with Denis Diderot of the Encyclopédie. D'Alembert's method for the wave equation is named after him.
  • The name Montes d'Alembert was originally used by Schröter for a series of peaks seen on the west limb near Grimaldi.
  • Schröter's name was dropped by the IAU, and the "D'Alembert" part transferred to the present crater in Menzel, 1971.
  • The capitalization was corrected to d'Alembert in 2010.

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