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Rheasilvia / ˌ r iː ə ˈ s ɪ l v i ə / is the largest impact crater on the asteroid Vesta. It is 505 km (314 mi) in diameter, which is 90% the diameter of Vesta itself, and is 95% the mean diameter of Vesta, 529 km (329 mi).
The most prominent of these surface features are two enormous impact basins, the 500-kilometre (311 mi)-wide Rheasilvia, centered near the south pole; and the 400 km (249 mi) wide Veneneia. The Rheasilvia impact basin is younger and overlies the Veneneia. [75] The Dawn science team named the younger, more prominent crater Rheasilvia, after the ...
3-D anaglyphs of Rheasilvia's central peak at photojournal.jpl.nasa.gov: top view and side view; Color views of Rheasilvia's central peak at Planetary.org: side view (peak is at upper right) and mosaic of Vesta's southern hemisphere; Color panorama of Aeolis Mons from 21 September 2012 (smaller color-balanced view here)
Compression fracture from Rheasilvia: Saturnalia Fossae: at least 365 km (230 mi) ≈ 39 km 365 km visible at one point; rest in northern shadow. Compression fracture from Veneneia. Europa? ? More than 20 km (10 mi) Moon of Jupiter Tethys: Ithaca Chasma: 2,000 km (1,000 mi) 100 km (60 mi) 3–5 km (2–3 mi) Moon of Saturn.
Date/Time Thumbnail Dimensions User Comment; current: 21:09, 26 October 2011: 1,170 × 1,026 (198 KB): Kwamikagami (talk | contribs) {{Information |Description = Colorized shaded-relief map showing identification of older 375-kilometer-wide impact basin beneath more recent Rheasilvia impact structure.
Olympus Mons is located between the northwestern edge of the Tharsis region and the eastern edge of Amazonis Planitia. It stands about 1,200 km (750 mi) from the other three large Martian shield volcanoes, collectively called the Tharsis Montes (Arsia Mons, Pavonis Mons, and Ascraeus Mons). The Tharsis Montes are slightly smaller than Olympus Mons.
Outline of Rheasilvia (top center), with Veneneia (bottom center) underlying it Veneneia / v ɛ n ɪ ˈ n iː ə / is the second-largest impact crater on asteroid 4 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 the largest craters in the Solar System .
Tarpeia is a pristine irregularly-shaped crater located within a region of grooved terrain in Vesta's southern hemisphere, inside Rheasilvia basin. The interior of Tarpeia hosts numerous small craters less than 1 kilometer in size.