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Dawn mission's search for satellites of Ceres: Intact protoplanets don't have satellites

McFadden, L.A. and Skillman, D.R. and Memarsadeghi, N. and Carsenty, Uri and Schröder, Stefan and Li, J.-Y and Mottola, Stefano and Mutchler, M. and McLean, B. and Joy, S.P. and Polanskey, C.A. and Rayman, M.D. and Fieseler, P.D. and Sykes, Mark V. and Nathues, A. and Gutierrez-Marques, P. and Keller, H. U. and Raymond, C.A. and Russell, C.T. (2018) Dawn mission's search for satellites of Ceres: Intact protoplanets don't have satellites. Icarus, 316, pp. 191-204. Elsevier. DOI: 10.1016/j.icarus.2018.02.017 ISSN 0019-1035

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Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0019103516305826

Abstract

Upon its approach to orbit the dwarf planet Ceres in early 2015, optical navigation and dedicated satellite search images were acquired with the Dawn mission’s framing camera 2. A team of searchers individually processed and examined the images for evidence of objects moving with Ceres. Completeness of search with respect to the space searched was calculated as a function of distance to Ceres and found to be complete down to 15 Ceres radii (Ceres' mean radius is 470 km). Upper limits of detectable magnitude were determined for each observed set of images and an upper limit in size was calculated assuming for the putative objects, Ceres' geometric albedo of 0.11. Nothing was found associated with Ceres down to a radius of 12 m for the most sensitive search, and down to a radius of 323 m for the least sensitive search circumstances. Examination of the physical properties of the 41 largest and most massive main belt asteroids suggests that large asteroids without satellites are intact and their interiors have internal strength. This is consistent with results from the Dawn mission at both Vesta and Ceres. Ceres' volatile-rich composition also is a likely contributor to both the absence of satellites at Ceres and of Ceres meteorites at Earth. These results suggest that collisional disruption creating rubble pile structure is a necessary condition for formation of satellites around main belt asteroids.

Item URL in elib:https://elib.dlr.de/122353/
Document Type:Article
Title:Dawn mission's search for satellites of Ceres: Intact protoplanets don't have satellites
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
McFadden, L.A.NASA Goddard Space Flight Center, Greenbelt, MD 20770UNSPECIFIED
Skillman, D.R.NASA Goddard Space Flight Center, Greenbelt, MD 20770UNSPECIFIED
Memarsadeghi, N.NASA Goddard Space Flight Center, Greenbelt, MD 20770UNSPECIFIED
Carsenty, UriUri.Carsenty (at) dlr.deUNSPECIFIED
Schröder, StefanStefanus.Schroeder (at) dlr.dehttps://orcid.org/0000-0003-0323-8324
Li, J.-YPlanetary Science Institute, Tucson, Arizona 85719, USAUNSPECIFIED
Mottola, StefanoStefano.Mottola (at) dlr.deUNSPECIFIED
Mutchler, M.Space Telescope Science Institute, Baltimore, MD 21218, United StatesUNSPECIFIED
McLean, B.Space Telescope Science Institute, Baltimore, MD 21218, United StatesUNSPECIFIED
Joy, S.P.University of California, Los Angeles, CA 90095-1567, USAUNSPECIFIED
Polanskey, C.A.Jet Propulsion Laboratory, California Institute of Technology, Pasadena CA 91109, USAUNSPECIFIED
Rayman, M.D.Jet Propulsion Laboratory, California Institute of Technology, Pasadena CA 91109, USAUNSPECIFIED
Fieseler, P.D.Jet Propulsion Laboratory, California Institute of Technology, Pasadena CA 91109, USAUNSPECIFIED
Sykes, Mark V.Planetary Science Institute, Tucson, AZ, United States.UNSPECIFIED
Nathues, A.Max-Planck Institute for Solar System Research, Katlenburg-Lindau, GermanyUNSPECIFIED
Gutierrez-Marques, P.Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, GermanyUNSPECIFIED
Keller, H. U.IGEP TU BraunschweigUNSPECIFIED
Raymond, C.A.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109-8099, USAUNSPECIFIED
Russell, C.T.Institute of Geophysics, University of California, Los Angeles, Los Angeles, CA 90095UNSPECIFIED
Date:2018
Journal or Publication Title:Icarus
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:316
DOI :10.1016/j.icarus.2018.02.017
Page Range:pp. 191-204
Publisher:Elsevier
ISSN:0019-1035
Status:Published
Keywords:Dwarf planet Ceres Asteroids Satellites of asteroids Asteroid Ceres
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt DAWN
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Institute of Planetary Research > Asteroids and Comets
Deposited By: Schröder, Dr. Stefan
Deposited On:13 Dec 2018 08:11
Last Modified:06 Sep 2019 15:26

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