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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; Parker, J Wm; 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; 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.
Afiliación
  • 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.
  • Keane JT; NASA Ames Research Center, Moffett Field, CA 94035-1000, USA.
  • Lauer TR; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.
  • Porter SB; National Science Foundation's National Optical Infrared Astronomy Research Laboratory, Tucson, AZ 26732, USA.
  • White OL; Southwest Research Institute, Boulder, CO 80302, USA.
  • Buratti BJ; SETI Institute, Mountain View, CA 94043, USA.
  • El-Maarry MR; NASA Ames Research Center, Moffett Field, CA 94035-1000, USA.
  • Lisse CM; Jet Propulsion Laboratory, California Institute of Technology Pasadena, CA 91109, USA.
  • Parker AH; Department of Earth and Planetary Sciences, Birkbeck, University of London, London WC1E 7HX, UK.
  • Throop HB; University College London, Gower St, Bloomsbury, London WC1E 6BT, UK.
  • Robbins SJ; Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.
  • Umurhan OM; Southwest Research Institute, Boulder, CO 80302, USA.
  • Binzel RP; Independent Consultant, Washington, D.C., USA.
  • Britt DT; Southwest Research Institute, Boulder, CO 80302, USA.
  • Buie MW; NASA Ames Research Center, Moffett Field, CA 94035-1000, USA.
  • Cheng AF; Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
  • Cruikshank DP; Department of Physics, University of Central Florida, Orlando, FL 32816, USA.
  • Elliott HA; Southwest Research Institute, Boulder, CO 80302, USA.
  • Gladstone GR; Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.
  • Grundy WM; NASA Ames Research Center, Moffett Field, CA 94035-1000, USA.
  • Hill ME; Southwest Research Institute, San Antonio, TX 78238, USA.
  • Horanyi M; Southwest Research Institute, San Antonio, TX 78238, USA.
  • Jennings DE; Lowell Observatory, Flagstaff, AZ 86001, USA.
  • Kavelaars JJ; Department of Astronomy and Planetary Science, Northern Arizona University, Flagstaff, AZ, 86011, USA.
  • Linscott IR; Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.
  • McComas DJ; Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA.
  • McNutt RL; NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
  • Protopapa S; National Research Council of Canada, Victoria, BC V9E 2E7, Canada.
  • Reuter DC; Independent Consultant, Mountain View, CA 94043, USA.
  • Schenk PM; Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA.
  • Showalter MR; Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.
  • Young LA; Southwest Research Institute, Boulder, CO 80302, USA.
  • Zangari AM; NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
  • Abedin AY; Lunar and Planetary Institute, Houston, TX 77058, USA.
  • Beddingfield CB; SETI Institute, Mountain View, CA 94043, USA.
  • Benecchi SD; Southwest Research Institute, Boulder, CO 80302, USA.
  • Bernardoni E; Southwest Research Institute, Boulder, CO 80302, USA.
  • Bierson CJ; National Research Council of Canada, Victoria, BC V9E 2E7, Canada.
  • Borncamp D; SETI Institute, Mountain View, CA 94043, USA.
  • Bray VJ; Planetary Science Institute, Tucson, AZ 85719, USA.
  • Chaikin AL; Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA.
Science ; 367(6481)2020 02 28.
Article en En | MEDLINE | ID: mdl-32054694
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.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Science Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Science Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos