Coniraya (crater)

Coniraya
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Coniraya (center right, overlain by three smaller craters). Gaue is at lower right, cut-off by the edge of the image.
Feature typeImpact crater
LocationConiraya Quadrangle, Ceres
Coordinates39°52′N 65°31′E / 39.86°N 65.51°E / 39.86; 65.51[1]
Diameter~135 kilometres (84 mi)[1]
Depth~500 m[2]
DiscovererDawn
EponymConiraya Viracocha, Incan lunar deity

Coniraya is a large, shallow impact crater on the dwarf planet Ceres. It is the namesake for the Coniraya Quadrangle.[3]

Naming

The crater is named after the Incan lunar and fertility deity, Coniraya Viracocha (Kon Iraya Wiraqocha), who came to earth at Huarochirí (Waruchiri), and created villages, terraced fields and irrigation canals. The name was officially approved by the International Astronomical Union (IAU) on 3 July 2015.[1]

Geology

Coniraya is an unusually shallow crater; despite having a diameter of roughly 135 kilometres (84 miles), it is only 500 metres (1,600 feet) deep. This is in contrast to the neighboring crater Vinotonus, which is similar in size and age yet ten times deeper. The shallow depth of Coniraya may have been caused by viscous relaxation, though only if Ceres's crust at the impact site was unusually enriched in water ice. The impact which created Coniraya was caused by a large body travelling an unusually low speed.[2] Coniraya is estimated to be approximately 1.3 billion years old despite its degraded state.[3]

References

  1. ^ a b c Staff (6 July 2015). "Planetary Names: Crater, craters: Coniraya on Ceres". USGS. Retrieved 7 August 2015.
  2. ^ a b Bland, Michael T.; et al. (29 June 2016). "Composition and structure of the shallow subsurface of Ceres revealed by crater morphology". Nature Geoscience. 9 (7). Springer Nature: 538–542. doi:10.1038/ngeo2743. hdl:10919/103024. Retrieved 2 October 2022.
  3. ^ a b Pasckert, J. H.; Hiesinger, H.; Ruesch, O.; et al. (December 2018). "Geologic mapping of the Ac-2 Coniraya quadrangle of Ceres from NASA's Dawn mission: Implications for a heterogeneously composed crust". Icarus. 316: 28–45. Bibcode:2018Icar..316...28P. doi:10.1016/j.icarus.2017.06.015.
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