Babbage is an ancient lunar crater that is located near the northwest limb of the Moon, named after Charles Babbage. It is attached to the southeastern rim of the prominent Pythagoras crater. The crater remnant named South intrudes into the southeastern floor of Babbage crater. Selenographic coordinates are used to refer to locations on the surface of Earths moon. ... Diameter is an AAA (authentication, authorization and accounting) protocol for applications such as network access or IP mobility. ... The depth of any crater in a solid planet or moon - whether it is an impact crater, a volcanic crater, or a subsidence crater - may be measured from the local surface to the bottom of the crater, or from the rim of the crater to the bottom. ... Selenographic coordinates are coordinates that refer to locations on the surface of the Moon. ... An eponym is the name of a person, whether real or fictitious, which has (or is thought to have) given rise to the name of a particular place, tribe, discovery or other item. ... Charles Babbage (26 December 1791 – 18 October 1871) was an English mathematician, analytical philosopher, mechanical engineer and (proto-) computer scientist who originated the idea of a programmable computer. ... Bulk silicate composition (estimated wt%) SiO2 44. ... Tycho crater on Earths moon. ... Bulk silicate composition (estimated wt%) SiO2 44. ... Charles Babbage (26 December 1791 – 18 October 1871) was an English mathematician, analytical philosopher, mechanical engineer and (proto-) computer scientist who originated the idea of a programmable computer. ... Pythagoras is a prominent lunar impact crater located near the northwestern lunar limb. ... South is a large lunar crater that is located in the northwest part of the Moon. ...

The outer rim of Babbage crater has been eroded and modified by a multitude of subsequent impacts, until all that remains is a ring of rounded hills. The most notable of these modifications is the satellite crater 'Babbage E', which overlays the southwestern rim. The northeast rim of this satellite crater is missing, and it forms a bay on the perimeter of the Babbage crater. The Oenopides crater is another worn formation attached to the southwest edge of this protuberance. Oenopides is a lunar crater that is located near the northwest limb of the Moon, and so appears foreshortened when viewed from the Earth. ...

The outer rampart of the Pythagoras crater lies across the floor of Babbage, forming a region of rough terrain in the northwest part of the interior. The remainder of the crater floor is relatively flat, although it is marked by many tiny craterlets. The most notable feature on the floor is the satellite crater 'Babbage A', which lies in the southeast part of the interior. This feature has not been significantly worn, and appears much younger than the remainder of the formation. Just to the west of 'Babbage A' is the smaller 'Babbage C' crater, a bowl-shaped formation.

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Babbage crater.

References

• See the reference table for the general listing of literature and web sites that were used in the compilation of this page.