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Phobos and Deimos control networksViking Orbiter images of Phobos and Deimos have been measured to establish global control networks for 98 surface features of the former and 53 of the latter; photogrammetric triangulation has yielded body-fixed coordinates of these control-points, as well as mean triaxial radii of 13.3 x 11.1 x 9.3 km for Phobos and 7.5 x 6.2 x 5.4 for Deimos. Expressions are also obtained for the inertial orientations of these bodies' spin axes and prime meridians. While these expressions should be accurate to a few tenths of a deg for the 1971-1980 period, their accuracy will degrade with time as the orbit accuracy degrades.
Document ID
19890045943
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Duxbury, Thomas C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Callahan, John D.
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 14, 2013
Publication Date
February 1, 1989
Publication Information
Publication: Icarus
Volume: 77
ISSN: 0019-1035
Subject Category
Lunar And Planetary Exploration
Accession Number
89A33314
Distribution Limits
Public
Copyright
Other

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