The Mendel-Ryberg Basin is a Nectarian[1] impact basin on the southwestern limb of the moon.[2] It is named after the crater Mendel on the west margin and the smaller crater Rydberg north of the center of the basin. The basin is due south of the larger, younger Orientale basin, and ejecta and other geomorphological effects from the younger basin have overprinted the older one.
 Oblique Lunar Orbiter 4 image, with the approximate extent of the basin highlighted in red | |
| Coordinates | 50°00′S 94°00′W / 50.0°S 094.0°W |
|---|---|
| Diameter | 630 km[1] |
| Eponym | Mendel and Rydberg craters |
At the center is a mass concentration (mascon), or gravitational high. The mascon was first identified by Doppler tracking of the Lunar Prospector spacecraft.[3] The existence of the basin was confirmed by the GRAIL spacecraft.[4]
Other craters within the basin include Guthnick, De Roy, Arrhenius, Yakovkin, Graff, Andersson, Chadwick, Fényi, Blanchard, and Baade. Vallis Baade cuts tangentially across the northeast rim of the basin. Nearby craters just outside the outer rim include Drude, Chant, Steklov, Lippmann, Petzval, Chappe, Pilâtre, Hausen, Pingré, and Inghirami. The large crater Bailly is to the southeast, and to the west beyond Lippmann is the South Pole-Aitken Basin.
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Topographic map -
Gravity map based on GRAIL
References edit
- ^ a b The geologic history of the Moon. USGS Professional Paper 1348. By Don E. Wilhelms, John F. McCauley, and Newell J. Trask. U.S. Government Printing Office, Washington: 1987. Table 9-3.
- ^ "Impact Basin Database". Archived from the original on 2014-08-07. Retrieved 2015-11-29.
- ^ A. S. Konopliv; A. B. Binder; L. L. Hood; A. B. Kucinskas; W. L. Sjogren & J. G. Williams (1998). "Improved Gravity Field of the Moon from Lunar Prospector". Science. 281 (5382): 1476–1480. Bibcode:1998Sci...281.1476K. doi:10.1126/science.281.5382.1476. PMID 9727968.
- ^ Neumann, Gregory A.; Zuber, Maria T.; Wieczorek, Mark A.; Head, James W.; Baker, David M. H.; Solomon, Sean C.; Smith, David E.; Lemoine, Frank G.; Mazarico, Erwan; et al. (2015). "Lunar impact basins revealed by Gravity Recovery and Interior Laboratory measurements". Science Advances. 1 (9): e1500852. Bibcode:2015SciA....1E0852N. doi:10.1126/sciadv.1500852. ISSN 2375-2548. PMC 4646831. PMID 26601317.