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Intrinsic Magnetic Properties of the Lunar BodyPreliminary analysis of magnetic measurements by Explorer 35 in lunar orbit suggested an upper limit of 4 x 10(exp 20) gauss-cm3 for the magnetic moment of the moon. A more detailed analysis of a larger body of Explorer 35 data from measurements in the earth's magnetic tail has subsequently been performed. Reversal of the ambient tail field by 180deg when the moon and spacecraft traverse the neutral sheet permits a separation of permanent and induced field contributions to the total field observed near the moon. When compared to calculated permanent and induced field effects, the results of this analysis lead to new upper limits of 102' gauss-cm3 on the lunar magnetic moment and 4y on the lunar surface field. Limiting the moment induced in the moon by the magnetotail field permits an upper limit of 1.8 to be set on the bulk relative magnetic permeability of the moon.
Document ID
19680014529
Acquisition Source
Goddard Space Flight Center
Document Type
Technical Memorandum (TM)
Authors
Behannon, Kenneth W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 2, 2013
Publication Date
May 1, 1968
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
X-616-68-171
NASA-TM-X-63206
Accession Number
68N23998
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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