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Beethoven (crater)

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Beethoven (crater)

Beethoven (crater)
Beethoven Basin.
Planet Mercury
Diameter 643 km
Eponym Ludwig van Beethoven[1]
Beethoven Basin is near the bottom of the image

Beethoven is a crater at latitude 20°S, longitude 124°W on Mercury. It is 643 km in diameter and was named after Ludwig van Beethoven.[1][note 1] It is the eleventh largest named impact crater in the Solar System and the third largest on Mercury.

Unlike many basins of similar size on the Moon, Beethoven is not multi-ringed.[3] Remnant ejecta blankets around parts of the Beethoven are subdued in appearance and their margins poorly defined in places. The crater wall (rim) of Beethoven is buried by its ejecta blanket and by plains materials and is barely visible.[2] The floor of the basin is covered with intermediate smooth plains material, which has the same reflectance as the exterior intermediate terrain. However there is no wrinkle ridges or graben inside the basin like those in Caloris.[4]

Spudis and Prosser[5] have suggested that Beethoven may possibly be late c3 in age or as old as early c2, which means that it is older than the Caloris Basin. The depth of Beethoven is estimated to be 2.5 ± 0.7 km from the stereo derived digital elevation models based on Mariner 10 images of the planet. This is significantly less than the depth of lunar basins of the similar size indicating that Beethoven probably has relaxed from its post impact shape.[4] There is also a broad topographic rise in the north–west margin of Beethoven.[2]


  1. ^ Other sources give slightly smaller diameter—625 km.[2]


  1. ^ a b "Beethoven". Gazetteer of Planetary Nomenclature. International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN). 2011-03-07. Retrieved 2014-03-05. 
  2. ^ a b c André, S.L.; Watters, T.R.; Robinson, M.S.; et al. (2005). "A topographic analysis of Beethoven Basin, Mercury". Lunar and Planetary Science. XXXVI: 1871.  
  3. ^ Trask, N.J. (1976). "Lunar Science Institute Contribution". Conference on Comparisons of Mercury and The Moon. November 15-17, 1976 262 (262). p. 36. 
  4. ^ a b Mohit, P. Surdas; Johnson, Catherine L.; Barnouin-Jha, Olivier; et al., Maria T.; Solomon, Sean C. (2009). "Shallow basins on Mercury: Evidence of relaxation?". Earth and Planetary Science Letters 285 (3-4): 355–363.  
  5. ^ Spudis, P.D.; Prosser, J.G. (1984). "Geologic map of the Michelangelo quadrangle of Mercury". U.S. Geological Survey Miscellaneous Investigations Series. Map I-1659, scale 1:5,000,000. 
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