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Veneneia (crater)

From Wikipedia, the free encyclopedia
Impact crater on 4 Vesta

This article is about the crater on 4 Vesta. For the vestal virgin Veneneia, seevestal virgins.
Outline ofRheasilvia (top center), with Veneneia (bottom center) underlying it

Veneneia/vɛnɪˈnə/ is the second-largestimpact crater on asteroid4 Vesta, at 52°S latitude. 395 kilometres (245 mi)[1] in diameter, it is 70% of the equatorial diameter of the asteroid, and one of thelargest craters in the Solar System. It is at least 2 billion years old, and possibly as old as 4.2 billion years.[2] However, it is overlain and partially obliterated by the even largerRheasilvia. It was discovered by theDawn spacecraft in 2011. It is named afterVenēneia, one of the foundingvestal virgins.[3]

Vesta has a series of troughs in the northern hemisphere concentric to Veneneia. These are believed to be large-scale fractures resulting from the impact. The largest isSaturnalia Fossae, approx. 39 km wide and > 400 km long.[4]

References

[edit]
  1. ^'Vesta seems more planet than asteroid',Science News, 2012 Mar 22
  2. ^Jenniskens, Peter; Gabadirwe, Mohutsiwa; Yin, Qing-Zhu; Proyer, Alexander; Moses, Oliver; Kohout, Tomas; Franchi, Fulvio; Gibson, Roger L.; Kowalski, Richard; Christensen, Eric J.; Gibbs, Alex R. (2021)."The impact and recovery of asteroid 2018 LA".Meteoritics & Planetary Science.56 (4):844–893.arXiv:2105.05997.Bibcode:2021M&PS...56..844J.doi:10.1111/maps.13653.ISSN 1945-5100.
  3. ^Veneneia,Gazetteer of Planetary Nomenclature, 2012 Feb 28 (NASA coordinates)
  4. ^"EXPLORATION OF SATURNALIA FOSSA AND ASSOCIATED STRUCTURES IN VESTA'S NORTHERN HEMISPHERE". Archived fromthe original on 3 February 2014. Retrieved15 September 2012.
Geography
(features)
Craters
Troughs
Regions
Image of Vesta by the Dawn orbiter
Astronomy
Discovery
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