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data revealed clean water ice without impurities at the crater and in its ejecta. Reassessment of the images from orbit, using additional images taken from
Inktomi and its surroundings, confirms a continuous ejecta blanket almost devoid of small craters, indicative of a geologically recent impact. A
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VIMS images shows a hilly crater floor with a prominent but topographically low central peak complex. While regular radial secondaries occur outside of the continuous ejecta blanket associated with the bright rays, clusters of numerous small craters could be identified in the eastern part of the
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with a central peak. The crater has an average depth of ~3.6 kilometers, though some sections of the crater floor are deeper or shallower by up to 0.5 kilometers. The central peak structure of
Inktomi is roughly 14 kilometers wide and rises 1.25 kilometers above the crater floor. Rather than the
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The rayed ejecta pattern indicates an oblique impact occurred from the west. The impact ejected pure water ice from beneath Rhea's surface creating a region contrastingly lighter than the surrounding regions. Recent analysis of
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typical conical mountain characteristic of the central peaks of many craters, Inktomi's central peak appears to be a complex system of converging ridges and subsidiary mountain peaks.
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crater floor and in the adjacent continuous ejecta. These small craters were most likely created by material ejected from the
Inktomi impact at a steep angle.
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and is located at 14.1 S, 112.1 W. Inktomi is thought to be the youngest major surface feature on Rhea, with estimates ranging from 8 to 280 million years.
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251:"The anatomy of fresh complex craters on the mid-sized icy moons of Saturn and self-secondary cratering at the rayed crater Inktomi (Rhea)"
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image of Rhea. Inktomi is a prominent feature on Rhea, seen here characterized by its light color and butterfly-wing ejecta
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Schenk, Paul; Kirchoff, Michelle; Hoogenboom, Trudi; Rivera-Valentin, Edgard (24 November 2020).
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378:. 42nd Lunar and Planetary Science Conference. The Woodlands, Texas, United States. 2249.
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47.2 kilometres (29.3 mi) in diameter located in the southern hemisphere of
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Stephan, Katrin; Jaumann, Ralf; Wagner, Roland; et al. (October 2011).
236:(Center Latitude: -14.10°, Center Longitude: 112.10°; Planetographic, +West)
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This article about an extraterrestrial geological feature is a
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Wagner, R. J.; Neukum, G.; Wolf, U.; et al. (March 2011).
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This article is about the crater. For other uses, see
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Global spectral properties of Rhea measured by VIMS
169:At roughly 47 kilometers in diameter, Inktomi is a
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330:. EPSC-DPS Joint Meeting 2011. Nantes, France.
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118:~3.6 km (2.2 mi) (mean depth)
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234:. USGS Astrogeology Research Program.
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372:Bright Ray Craters on Rhea and Dione
345:from the original on 5 October 2016
255:Meteoritics & Planetary Science
232:Gazetteer of Planetary Nomenclature
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385:from the original on 4 March 2016
677:Impact craters on Saturn's moons
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297:from the original on 5 June 2024
153:. The crater is named for the
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630:. You can help Knowledge by
570:Titan Saturn System Mission
110:47.2 km (29.3 mi)
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55:Central peak impact crater
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503:Giovanni Domenico Cassini
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23:Inktomi (disambiguation)
267:2020M&PS...55.2440S
141:, is a prominent rayed
137:, informally nicknamed
293:. JPL. 21 April 2006.
291:"Revisiting the Splat"
336:2011epsc.conf..919S
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687:Astrogeology stubs
276:10.1111/maps.13592
91:14.100°S 112.100°W
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261:(11): 2440–2460.
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96:-14.100; -112.100
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16:Crater on Rhea
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143:impact crater
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632:expanding it
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595:In mythology
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387:. Retrieved
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347:. Retrieved
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299:. Retrieved
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52:Feature type
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682:Rhea (moon)
517:Exploration
157:spider-god
94: /
70:Coordinates
671:Categories
590:In fiction
532:Pioneer 11
496:Discoverer
205:References
546:Voyager 2
539:Voyager 1
439:Geography
228:"Inktomi"
139:The Splat
563:Proposed
467:Features
380:Archived
340:Archived
295:Archived
194:anaglyph
149:'s moon
107:Diameter
60:Location
583:Related
453:Inktomi
446:Craters
389:17 July
349:17 July
332:Bibcode
263:Bibcode
198:Cassini
181:Cassini
165:Geology
135:Inktomi
82:112°6′W
43:Cassini
29:Inktomi
458:Tirawa
301:5 June
159:Iktomi
155:Lakota
147:Saturn
127:Iktomi
123:Eponym
79:14°6′S
600:Rings
383:(PDF)
376:(PDF)
343:(PDF)
328:(PDF)
185:'
115:Depth
628:stub
524:Past
474:List
432:Rhea
391:2012
351:2012
303:2024
189:VIMS
151:Rhea
64:Rhea
271:doi
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
