气候变化领域集成服务门户(CCPortal): The geology and geophysics of Kuiper Belt object (486958) Arrokoth

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DOI	10.1126/science.aay3999
	The geology and geophysics of Kuiper Belt object (486958) Arrokoth
	Spencer J.R.; Stern S.A.; Moore J.M.; Weaver H.A.; Singer K.N.; Olkin C.B.; Verbiscer A.J.; McKinnon W.B.; Wm Parker J.; Beyer R.A.; Keane J.T.; Lauer T.R.; Porter S.B.; White O.L.; Buratti B.J.; El-Maarry M.R.; Lisse C.M.; Parker A.H.; Throop H.B.; Robbins S.J.; Umurhan O.M.; Binzel R.P.; Britt D.T.; Buie M.W.; Cheng A.F.; Cruikshank D.P.; Elliott H.A.; Gladstone G.R.; Grundy W.M.; Hill M.E.; Horanyi M.; Jennings D.E.; Kavelaars J.J.; Linscott I.R.; McComas D.J.; McNutt R.L.; Jr.; Protopapa S.; Reuter D.C.; Schenk P.M.; Showalter M.R.; Young L.A.; Zangari A.M.; Abedin A.Y.; Beddingfield C.B.; Benecchi S.D.; Bernardoni E.; Bierson C.J.; Borncamp D.; Bray V.J.; Chaikin A.L.; Dhingra R.D.; Fuentes C.; Fuse T.; Gay P.L.; Gwyn S.D.J.; Hamilton D.P.; Hofgartner J.D.; Holman M.J.; Howard A.D.; Howett C.J.A.; Karoji H.; Kaufmann D.E.; Kinczyk M.; May B.H.; Mountain M.; Pätzold M.; Petit J.M.; Piquette M.R.; Reid I.N.; Reitsema H.J.; Runyon K.D.; Sheppard S.S.; Stansberry J.A.; Stryk T.; Tanga P.; Tholen D.J.; Trilling D.E.; Wasserman L.H.
发表日期	2020
ISSN	0036-8075
卷号	367 期号:6481
英文摘要	The Cold Classical Kuiper Belt, a class of small bodies in undisturbed orbits beyond Neptune, is composed of primitive objects preserving information about Solar System formation. In January 2019, the New Horizons spacecraft flew past one of these objects, the 36-kilometer-long contact binary (486958) Arrokoth (provisional designation 2014 MU69). Images from the flyby show that Arrokoth has no detectable rings, and no satellites (larger than 180 meters in diameter) within a radius of 8000 kilometers. Arrokoth has a lightly cratered, smooth surface with complex geological features, unlike those on previously visited Solar System bodies. The density of impact craters indicates the surface dates from the formation of the Solar System. The two lobes of the contact binary have closely aligned poles and equators, constraining their accretion mechanism. Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works
关键词	accretion geology geophysics Neptune solar system spacecraft article astronomy cold stress geology space flight
语种	英语
来源机构	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133684
推荐引用方式 GB/T 7714	Spencer J.R.,Stern S.A.,Moore J.M.,et al. The geology and geophysics of Kuiper Belt object (486958) Arrokoth[J]. Science,2020,367(6481).
APA	Spencer J.R..,Stern S.A..,Moore J.M..,Weaver H.A..,Singer K.N..,...&Wasserman L.H..(2020).The geology and geophysics of Kuiper Belt object (486958) Arrokoth.,367(6481).
MLA	Spencer J.R.,et al."The geology and geophysics of Kuiper Belt object (486958) Arrokoth".367.6481(2020).