학술논문

The geology and geophysics of Kuiper Belt object (486958) Arrokoth.
Document Type
Academic Journal
Author
Spencer JR; Southwest Research Institute, Boulder, CO 80302, USA. spencer@boulder.swri.edu.; Stern SA; Southwest Research Institute, Boulder, CO 80302, USA.; Moore JM; NASA Ames Research Center, Moffett Field, CA 94035-1000, USA.; Weaver HA; Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.; Singer KN; Southwest Research Institute, Boulder, CO 80302, USA.; Olkin CB; Southwest Research Institute, Boulder, CO 80302, USA.; Verbiscer AJ; Department of Astronomy, University of Virginia, Charlottesville, VA 22904, USA.; McKinnon WB; Department of Earth and Planetary Sciences and McDonnell Center for the Space Sciences, Washington University, St. Louis, MO 63130, USA.; Parker JW; Southwest Research Institute, Boulder, CO 80302, USA.; Beyer RA; SETI Institute, Mountain View, CA 94043, USA.; NASA Ames Research Center, Moffett Field, CA 94035-1000, USA.; Keane JT; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.; Lauer TR; National Science Foundation's National Optical Infrared Astronomy Research Laboratory, Tucson, AZ 26732, USA.; Porter SB; Southwest Research Institute, Boulder, CO 80302, USA.; White OL; SETI Institute, Mountain View, CA 94043, USA.; NASA Ames Research Center, Moffett Field, CA 94035-1000, USA.; Buratti BJ; Jet Propulsion Laboratory, California Institute of Technology Pasadena, CA 91109, USA.; El-Maarry MR; Department of Earth and Planetary Sciences, Birkbeck, University of London, London WC1E 7HX, UK.; University College London, Gower St, Bloomsbury, London WC1E 6BT, UK.; Lisse CM; Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.; Parker AH; Southwest Research Institute, Boulder, CO 80302, USA.; Throop HB; Independent Consultant, Washington, D.C., USA.; Robbins SJ; Southwest Research Institute, Boulder, CO 80302, USA.; Umurhan OM; NASA Ames Research Center, Moffett Field, CA 94035-1000, USA.; Binzel RP; Massachusetts Institute of Technology, Cambridge, MA 02139, USA.; Britt DT; Department of Physics, University of Central Florida, Orlando, FL 32816, USA.; Buie MW; Southwest Research Institute, Boulder, CO 80302, USA.; Cheng AF; Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.; Cruikshank DP; NASA Ames Research Center, Moffett Field, CA 94035-1000, USA.; Elliott HA; Southwest Research Institute, San Antonio, TX 78238, USA.; Gladstone GR; Southwest Research Institute, San Antonio, TX 78238, USA.; Grundy WM; Lowell Observatory, Flagstaff, AZ 86001, USA.; Department of Astronomy and Planetary Science, Northern Arizona University, Flagstaff, AZ, 86011, USA.; Hill ME; Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.; Horanyi M; Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA.; Jennings DE; NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.; Kavelaars JJ; National Research Council of Canada, Victoria, BC V9E 2E7, Canada.; Linscott IR; Independent Consultant, Mountain View, CA 94043, USA.; McComas DJ; Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA.; McNutt RL Jr; Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.; Protopapa S; Southwest Research Institute, Boulder, CO 80302, USA.; Reuter DC; NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.; Schenk PM; Lunar and Planetary Institute, Houston, TX 77058, USA.; Showalter MR; SETI Institute, Mountain View, CA 94043, USA.; Young LA; Southwest Research Institute, Boulder, CO 80302, USA.; Zangari AM; Southwest Research Institute, Boulder, CO 80302, USA.; Abedin AY; National Research Council of Canada, Victoria, BC V9E 2E7, Canada.; Beddingfield CB; SETI Institute, Mountain View, CA 94043, USA.; Benecchi SD; Planetary Science Institute, Tucson, AZ 85719, USA.; Bernardoni E; Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA.; Bierson CJ; Earth and Planetary Science Department, University of California, Santa Cruz, CA 95064, USA.; Borncamp D; Decipher Technology Studios, Alexandria, VA 22314, USA.; Bray VJ; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA.; Chaikin AL; Independent Science Writer, Arlington, VT 05250, USA.; Dhingra RD; University of Idaho, Moscow, ID 83844, USA.; Fuentes C; Universidad de Chile, Centro de Astrofísica y Tecnologías Afines, Santiago, Chile.; Fuse T; Kashima Space Technology Center, National Institute of Information and Communications Technology, Kashima, Ibaraki 314-8501, Japan.; Gay PL; Planetary Science Institute, Tucson, AZ 85719, USA.; Gwyn SDJ; National Research Council of Canada, Victoria, BC V9E 2E7, Canada.; Hamilton DP; Department of Astronomy, University of Maryland, College Park, MD 20742, USA.; Hofgartner JD; Jet Propulsion Laboratory, California Institute of Technology Pasadena, CA 91109, USA.; Holman MJ; Center for Astrophysics, Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA.; Howard AD; Department of Environmental Sciences, University of Virginia, Charlottesville, VA 22904, USA.; Howett CJA; Southwest Research Institute, Boulder, CO 80302, USA.; Karoji H; National Institutes of Natural Sciences, Tokyo, Japan.; Kaufmann DE; Southwest Research Institute, Boulder, CO 80302, USA.; Kinczyk M; Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, USA.; May BH; Independent Collaborator, Windlesham GU20 6YW, UK.; Mountain M; Association of Universities for Research in Astronomy, Washington, DC 20004, USA.; Pätzold M; Rheinisches Institut für Umweltforschung an der Universität zu Köln, Cologne 50931, Germany.; Petit JM; Institut Univers, Temps-fréquence, Interfaces, Nanostructures, Atmosphère et environnement, Molécules, Unité Mixte de Recherche, Centre National de la Recherche Scientifique, Universite Bourgogne Franche Comte, F-25000 Besancon, France.; Piquette MR; Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA.; Reid IN; Space Telescope Science Institute, Baltimore, MD 21218, USA.; Reitsema HJ; Independent Consultant, Holland, MI 49424, USA.; Runyon KD; Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.; Sheppard SS; Department of Terrestrial Magnetism, Carnegie Institution for Science, Washington, DC 20015, USA.; Stansberry JA; Space Telescope Science Institute, Baltimore, MD 21218, USA.; Stryk T; Roane State Community College, Oak Ridge, TN 37830, USA.; Tanga P; Université Côte d'Azur, Observatoire de la Côte d'Azur, Laboratoire Lagrange/ Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7293, 06304 Nice Cedex 4, France.; Tholen DJ; Institute for Astronomy, University of Hawaii, Honolulu, HI 96822, USA.; Trilling DE; Department of Astronomy and Planetary Science, Northern Arizona University, Flagstaff, AZ, 86011, USA.; Wasserman LH; Lowell Observatory, Flagstaff, AZ 86001, USA.
Source
Publisher: American Association for the Advancement of Science Country of Publication: United States NLM ID: 0404511 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1095-9203 (Electronic) Linking ISSN: 00368075 NLM ISO Abbreviation: Science Subsets: PubMed not MEDLINE; MEDLINE
Subject
Language
English
Abstract
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 MU 69 ). 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.)