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Ulysses dust measurements near JupiterSubmicrometer- to micrometer-sized particles were recorded by the Ulysses dust detector within 40 days of the Jupiter flyby. Nine impacts were recorded within 50 Jupiter radii with most of them recorded after closest approach. Three of these impacts are consistent with particles on prograde orbits around Jupiter and the rest are believed to have resulted from gravitationally focused interplanetary dust. From the ratio of the impact rate before the Jupiter flyby to the impact rate after the Jupiter flyby it is concluded that interplanetary dust particles at the distance of Jupiter move on mostly retrograde orbits. On 10 March 1992, Ulysses passed through an intense dust stream. The dust detector recorded 126 impacts within 26 hours. The stream particles were moving on highly inclined and apparently hyperbolic orbits with perihelion distances of greater than 5 astronomical units. Interplanetary dust is lost rather quickly from the solar system through collisions and other mechanisms and must be almost continuously replenished to maintain observed abundances. Dust flux measurements, therefore, give evidence of the recent rates of production from sources such as comets, asteroids, and moons, as well as the possible presence of interstellar grains.
Document ID
19920074370
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Gruen, Eberhard
(Max-Planck-Institut fuer Kernphysik Heidelberg, Germany)
Zook, Herbert A.
(NASA Johnson Space Center Houston, TX, United States)
Baguhl, Michael
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Fechtig, Hugo
(Max-Planck-Institut fuer Kernphysik Heidelberg, Germany)
Hanner, Martha S.
(JPL Pasadena, CA, United States)
Kissel, Jochen
(Max-Planck-Institut fuer Kernphysik Heidelberg, Germany)
Lindblad, Bertil A.
(Lund Observatory Sweden)
Linkert, Dietmar
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Linkert, Gudrun
(Max-Planck-Institut fuer Kernphysik Heidelberg, Germany)
Mann, Ingrid B.
(Max-Planck-Institut fuer Aeronomie Katlenburg-Lindau, Germany)
Date Acquired
August 15, 2013
Publication Date
September 11, 1992
Publication Information
Publication: Science
Volume: 257
Issue: 5076,
ISSN: 0036-8075
Subject Category
Lunar And Planetary Exploration
Accession Number
92A56994
Distribution Limits
Public
Copyright
Other

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