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the fourth-largest known impact structure on Tethys. Its western crater wall is bright, with fresh ice from Tethys's crust exposed; the eastern crater wall is comparatively much more degraded. Within
Penelope's basin floor is a heavily degraded central peak ring approximately 50 kilometers in diameter. The central peak ring's northern and southeastern arcs are the best-preserved sections of this feature. Several faults cross Penelope, including a tectonic feature that crosses the basin floor yet does not continue beyond the crater rim. Penelope is rather deep and unrelaxed, having not been flattened out as with some of Tethys's other major impact craters. It and another nearby unrelaxed impact basin, Antinous, may represent a province of unrelaxed craters between ~120° E and ~30° E.
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Penelope is a highly elliptical crater, with its shortest axis being roughly 180 kilometers and its longest axis being roughly 220 kilometers. Penelope's longest axis is aligned almost exactly north-south, deviating by only 1°. Nevertheless, with an average diameter of roughly 207.5 kilometers, it is
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The region
Penelope is located in is dominated by heavily cratered terrain. To the east of Penelope is a network of roughly parallel narrow troughs that cut across a system of older, more degraded troughs. Regions to the east are especially densely cratered and rugged. Unusually, Penelope, alongside
128:. An unusually elliptical crater, it measures roughly 180 by 220 kilometers and is located near the equator near the center of Tethys's trailing hemisphere at 10.8°S, 249.2°W. It is approximately opposite to the largest crater on Tethys—
337:
White, Oliver L.; Schenk, Paul M.; Bellagamab, Anthony W.; Grimm, Ashley M.; Dombard, Andrew J.; Bray, Veronica J. (May 2017). "Impact crater relaxation on Dione and Tethys and relation to past heat flow".
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Ferguson, Sierra N.; Rhoden, Alyssa R.; Kirchoff, Michelle R.; Salmon, Julien J. (10 June 2022). "A unique
Saturnian impactor population from elliptical craters".
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most of Tethys's other large impact craters, are all concentrated on Tethys's trailing hemisphere to the south of the equator.
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Stephen, Katrin; Wagner, Roland; Jaumann, Ralf; et al. (August 2016).
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Stephen, Katrin; Wagner, Roland; Jaumann, Ralf; et al. (April 2015).
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258:. EGU General Assembly 2015. Vienna, Austria.
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252:Tethys – Geological and Spectral Properties
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154:. The name was officially approved by the
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16:Fourth-largest impact crater on Tethys
202:. USGS Astrogeology Research Program.
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216:Earth and Planetary Science Letters
200:Gazetteer of Planetary Nomenclature
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690:Surface features of Tethys (moon)
685:Impact craters on Saturn's moons
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273:from the original on 18 May 2024
156:International Astronomical Union
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140:, wife of the legendary King
360:10.1016/j.icarus.2017.01.025
324:10.1016/j.icarus.2016.03.002
638:Titan Saturn System Mission
380:images of Melanthius Crater
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236:10.1016/j.epsl.2022.117652
132:. Penelope is named after
548:Giovanni Domenico Cassini
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33:Penelope crater (center)
228:2022E&PSL.59317652F
42:Peak-ring impact crater
116:is the fourth-largest
162:Geology and structure
352:2017Icar..288...37W
316:2016Icar..274....1S
264:2015EGUGA..17.7306S
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275:. Retrieved
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39:Feature type
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593:Exploration
512:Quadrangles
81: /
57:Coordinates
679:Categories
659:In fiction
607:Pioneer 11
580:(trailing)
476:Melanthius
222:: 117652.
196:"Penelope"
175:References
617:Voyager 2
612:Voyager 1
572:(leading)
541:Discovery
534:Astronomy
346:: 37–52.
631:Proposed
507:Features
491:Penelope
486:Odysseus
481:Naubolos
432:Chasmata
310:: 1–22.
268:Archived
266:. 7306.
142:Odysseus
130:Odysseus
122:Saturn's
114:Penelope
106:Penelope
97:207.5 km
94:Diameter
69:110°47′E
47:Location
22:Penelope
652:Related
577:Calypso
569:Telesto
562:Trojans
469:Craters
424:Geology
378:Cassini
348:Bibcode
312:Bibcode
260:Bibcode
224:Bibcode
151:Odyssey
66:10°50′S
640:(TSSM)
453:Montes
416:Tethys
340:Icarus
304:Icarus
277:18 May
126:Tethys
102:Eponym
51:Tethys
500:Lists
300:(PDF)
271:(PDF)
256:(PDF)
146:Homer
144:from
124:moon
600:Past
279:2024
356:doi
344:288
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308:274
232:doi
220:593
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120:on
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
