Einstein (crater)
| Coordinates | 16°18′N 88°42′W / 16.3°N 88.7°WCoordinates: 16°18′N 88°42′W / 16.3°N 88.7°W |
|---|---|
| Diameter | 198 km |
| Depth | Unknown |
| Colongitude | 91° at sunrise |
| Eponym | Albert Einstein |
Einstein is a large lunar crater that lies along the western limb of the Moon, making it difficult to observe from the Earth. The visibility of this formation is affected by libration effects, but even under the best conditions not much detail can be observed except from lunar orbit. Nearby craters of note include Moseley just to the north, Dalton along the eastern rim, Vasco da Gama just to the southeast, and Bohr to the south-southeast. The formation Vallis Bohr is visible to the south.
The outer rim of this walled plain has been all but obliterated by many small impacts. Only along the eastern wall, where it joins Dalton crater, does a significant rim still survive. Occupying the center of the interior floor is Einstein A, an impact crater with terraced inner walls and a central peak. The outer rampart of this concentric crater spreads across the interior floor, covering over half the diameter of Einstein. Several smaller craters also lie scattered across the floor, but there are sections of relatively flat surface in the southwest part of the floor.
Because it is only visible under very favorable conditions, this crater was only discovered as recently as 1952 by Patrick Moore. The original name for this formation was 'Caramuel', but it was later changed to Einstein by the IAU.
Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Einstein.
| Einstein | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 16.7° N | 88.2° W | 51 km |
| R | 13.9° N | 91.8° W | 20 km |
| S | 15.1° N | 91.5° W | 20 km |
References
- Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
- Blue, Jennifer (July 25, 2007). "Gazetteer of Planetary Nomenclature". USGS. Retrieved 2007-08-05.
- Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
- Cocks, Elijah E.; Cocks, Josiah C. (1995). Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature. Tudor Publishers. ISBN 978-0-936389-27-1.
- McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24.
- Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU". Space Science Reviews 12 (2): 136–186. Bibcode:1971SSRv...12..136M. doi:10.1007/BF00171763.
- Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6.
- Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3.
- Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4.
- Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revision ed.). Dover. ISBN 978-0-486-20917-3.
- Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.
- Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.