Hár (crater)

Hár is a crater on Jupiter's moon Callisto. Its name is one of the many names of Odin, the supreme god in Norse mythology. This is an example of a central dome impact crater.[1] Its name was adopted by the International Astronomical Union (IAU) in 1979.[2]

Hár is a double-ringed crater approximately 120 kilometres (75 mi) in diameter[3]: 19027 [4] located southwest of the crater Tindr.[1]: 843  Its inner ring is rugged and hummocky, and it is surrounded by a "platform" of hilly terrain.[5]: 5–9  Occupying the center of the crater is a very prominent dome about 82 kilometres (51 mi) in diameter, offset to the west from the crater center.[1]: 843  The dome's origin is unclear, but it may have formed from the uplift of icy material below the crater's center after its formative impact event.[4] Many of Hár's features are muted due to ejecta from Tindr, and a series of radiating crater chains from Tindr cut across Hár's structure.[5]: 9 

References

  1. ^ a b c Greeley, R.; Klemaszewski, J.E.; Wagner L.; et al. (2000). "Galileo views of the geology of Callisto". Planetary and Space Science. 48 (9): 829–853. Bibcode:2000P&SS...48..829G. doi:10.1016/S0032-0633(00)00050-7.
  2. ^ "Hár". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program. (Center Latitude: –3.50°, Center Longitude: 358.00°; Planetocentric, +West)
  3. ^ Schenk, Paul M. (September 1995). "The Geology of Callisto". Journal of Geophysical Research. 100 (E9): 19023–19040. Bibcode:1995JGR...10019023S. doi:10.1029/95JE01855.
  4. ^ a b "Har Crater on Callisto". NASA. 26 March 1998. Retrieved 10 December 2025.
  5. ^ a b White, Oliver L.; Moore, Jeffrey M.; Schenk, Paul M.; Korycansky, Donald G.; Dombard, Andrew J.; Caussi, Martina L.; Singer, Kelsi N. (January 2025). "Large impact features on Ganymede and Callisto as revealed by geological mapping and morphometry". Icarus. 426. arXiv:2403.13912. Bibcode:2025Icar..42616357W. doi:10.1016/j.icarus.2024.116357. 116357.


This article is issued from Wikipedia. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.