225:. The crater is extremely shallow, with most of the crater floor having nearly no measurable depth. Nevertheless, the floor of Yangoor exhibits a dichotomy: the southern floor is much deeper, with a depth of roughly 1 kilometer, than the northern floor, which only has a depth of less than 200 meters. Yangoor's crater rim and central peak, by comparison, are much more topographically prominent. The crater rim of Yangoor is largely intact and rises 150–500 meters above the surrounding terrain, whilst an elongated central peak complex extends from the center to Yangoor's western rim and rises over 1 kilometer in height.
27:
621:
236:
burying the original crater floor. Alternatively, the flattened nature of
Yangoor may indicate an era of viscous relaxation, where Ariel's crust slowly creeps and flattens out topographical features. A team of planetary scientists led by M. T. Bland modelled viscous relaxation for Yangoor in 2023,
232:, another Arielian crater. The expected depth for a crater of Yangoor's size is ~2.7 kilometers, requiring some mechanism to reduce the depth of the crater after its formation. Astronomer A. Ruzicka proposed in 1988 that the flat portions of Yangoor represents a
289:
Bland, Michael T.; Beddingfield, Chloe B.; Nordheim, Tom A.; Patthoff, Donald A.; Vance, Steven D. (1 May 2023). "Constraints on the composition and thermal structure of Ariel's icy crust as inferred from its largest observed impact crater".
241:
of at least 30 mW/m is required to match observations. This value suggests that Ariel underwent a period of intense tidal heating; as
Domovoy is not relaxed, either the period was brief, or Ariel's surface was affected unevenly.
185:
from Ariel's south pole. The northwestern edge of the crater was erased by formation of ridged terrain. The crater lacks bright ejecta deposits and was imaged for the first time by the
435:
Schenk, Paul M.; Moore, Jeffrey M. (December 2020). "Topography and geology of
Uranian mid-sized icy satellites in comparison with Saturnian and Plutonian satellites".
1186:
66:
818:
1143:
1116:
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519:
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1065:
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380:
Smith, B. A.; Soderblom, L. A.; Beebe, A.; Bliss, D.; Boyce, J. M.; Brahic, A.; Briggs, G. A.; Brown, R. H.; Collins, S. A. (4 July 1986).
1111:
200:
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1121:
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354:
211:
At roughly 78 kilometers in diameter, Yangoor is the largest
Arielian crater observed by the
1126:
1070:
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1005:
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827:
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958:
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482:. Abstracts of the Lunar and Planetary Science Conference. Vol. 19. p. 1009.
174:
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1104:
965:
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885:
870:
586:
228:
The extreme shallowness of
Yangoor is unusual and contrasts with the similarly-sized
162:
1087:
944:
900:
528:
421:
366:
170:
54:
264:
191:
spacecraft in
January 1986. The crater is named after a spirit that brings day in
311:
915:
405:
233:
1020:
920:
358:
82:
68:
696:
213:
187:
138:
33:
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413:
839:
727:
350:
218:
166:
381:
326:
796:
238:
800:
501:
382:"Voyager 2 in the Uranian System: Imaging Science Results"
497:
327:"Geological terrains and crater frequencies on Ariel"
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998:
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838:Listed in approximately increasing distance from
437:Philosophical Transactions of the Royal Society A
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8:
19:
284:
282:
280:
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37:image of Ariel, with Yangoor left of center
979:
819:
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680:
632:
545:
520:
506:
498:
25:
181:in diameter and is located approximately
251:
259:
257:
255:
18:
271:. USGS Astrogeology Research Program.
7:
16:Largest known impact crater on Ariel
269:Gazetteer of Planetary Nomenclature
14:
1187:Surface features of Uranus' moons
619:
217:spacecraft in its 1986 flyby of
201:International Astronomical Union
325:Plescia, J. B. (May 21, 1987).
237:concluding that a surface heat
199:was officially approved by the
193:Australian Aboriginal mythology
151:Australian Aboriginal mythology
126:>1 kilometre (0.62 mi)
1:
312:10.1016/j.icarus.2023.115452
406:10.1126/science.233.4759.43
118:~1 kilometre (0.62 mi)
1203:
478:Ruzicka, A. (March 1988).
175:central-peak impact crater
110:78 kilometres (48 mi)
46:Central-peak impact crater
834:
617:
24:
718:Uranus Orbiter and Probe
457:10.1098/rsta.2020.0102
165:on the surface of the
161:is the largest known
480:The Geology of Ariel
1059:Geological features
488:1988LPI....19.1009R
449:2020RSPTA.37800102S
398:1986Sci...233...43S
343:1987Natur.327..201P
304:2023Icar..39515452B
78: /
21:
1169:
1168:
1054:
1053:
976:Outer (irregular)
794:
793:
766:
765:
758:Uranus Pathfinder
672:
671:
615:
614:
337:(6119): 201–204.
234:cryovolcanic flow
156:
155:
129:
1194:
1127:Messina Chasmata
1071:Kachina Chasmata
980:
930:Major (spheroid)
821:
814:
807:
798:
681:
648:William Herschel
633:
623:
622:
582:Kachina Chasmata
546:
522:
515:
508:
499:
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491:
475:
469:
468:
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1201:
1197:
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1172:
1171:
1170:
1165:
1137:Rousillon Rupes
1050:
994:
971:
925:
856:Rings of Uranus
844:
830:
828:Moons of Uranus
825:
795:
790:
762:
739:
710:
704:
691:Voyager program
668:
664:Moons of Uranus
652:
643:William Lassell
624:
620:
611:
592:Korrigan Chasma
565:
537:
531:
526:
496:
495:
477:
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434:
433:
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392:(4759): 43–64.
379:
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324:
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288:
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263:
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223:system of moons
209:
207:Characteristics
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835:
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584:
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577:Brownie Chasma
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177:, it is about
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128:(central peak)
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1128:
1125:
1123:
1120:
1119:
1118:
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1113:
1110:
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1105:Mommur Chasma
1103:
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919:
917:
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904:
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869:
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837:
836:
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829:
822:
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640:
638:
634:
631:
627:
608:
605:
603:
600:
598:
595:
593:
590:
588:
587:Kewpie Chasma
585:
583:
580:
578:
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574:
572:
568:
562:
559:
557:
554:
553:
551:
547:
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163:impact crater
160:
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109:
105:
100:
83:68.7°S 80.3°W
63:
59:
56:
53:
49:
45:
41:
36:
35:
28:
23:
1182:Ariel (moon)
1088:Verona Rupes
1075:
964:
957:
950:
943:
936:
779:
750:
732:
695:
607:Sylph Chasma
602:Pixie Chasma
560:
479:
473:
440:
436:
430:
389:
385:
375:
334:
330:
320:
295:
291:
268:
227:
212:
210:
186:
158:
157:
137:
88:-68.7; -80.3
43:Feature type
32:
780:The Tempest
709:Planned and
677:Exploration
195:. The name
183:450 km
86: /
61:Coordinates
1176:Categories
1144:Umbrielian
1021:S/2023 U 1
999:Retrograde
786:In fiction
597:Kra Chasma
298:: 115452.
246:References
203:in 1988.
179:78 km
134:Discoverer
92: (
31:Annotated
1095:Oberonian
1083:Mirandian
1046:Ferdinand
1006:Francisco
881:Desdemona
744:Cancelled
697:Voyager 2
636:Discovery
629:Astronomy
536:Geography
359:0028-0836
265:"Yangoor"
214:Voyager 2
188:Voyager 2
139:Voyager 2
34:Voyager 2
1122:Gertrude
1117:Titanian
1066:Arielian
1036:Prospero
1026:Trinculo
1016:Stephano
990:Margaret
983:Prograde
896:Rosalind
876:Cressida
861:Cordelia
711:proposed
540:features
465:33161858
443:(2187).
414:17812889
221:and its
149:Spirit,
107:Diameter
51:Location
1112:Puckian
1076:Yangoor
1041:Setebos
1031:Sycorax
1011:Caliban
959:Titania
952:Umbriel
938:Miranda
911:Perdita
906:Belinda
866:Ophelia
771:Related
752:Cassini
657:General
561:Yangoor
556:Domovoy
549:Craters
484:Bibcode
445:Bibcode
422:5895824
394:Bibcode
386:Science
367:4324623
339:Bibcode
300:Bibcode
230:Domovoy
197:Yangoor
167:Uranian
159:Yangoor
94:Yangoor
73:80°18′W
70:68°42′S
20:Yangoor
1132:Ursula
1100:Hamlet
966:Oberon
891:Portia
886:Juliet
871:Bianca
840:Uranus
728:ODINUS
570:Chasms
463:
420:
412:
365:
357:
331:Nature
292:Icarus
219:Uranus
146:Eponym
1159:Skynd
1154:Vuver
1149:Wunda
945:Ariel
901:Cupid
849:Inner
733:Freyr
529:Ariel
418:S2CID
363:S2CID
171:Ariel
169:moon
115:Depth
55:Ariel
916:Puck
723:MUSE
684:Past
461:PMID
410:PMID
355:ISSN
239:flux
173:. A
123:Peak
921:Mab
778:In
453:doi
441:378
402:doi
390:233
347:doi
335:327
308:doi
296:395
1178::
459:.
451:.
439:.
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408:.
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388:.
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361:.
353:.
345:.
333:.
329:.
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294:.
277:^
267:.
254:^
820:e
813:t
806:v
542:)
538:(
521:e
514:t
507:v
490:.
486::
467:.
455::
447::
424:.
404::
396::
369:.
349::
341::
314:.
310::
302::
96:)
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