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The occultation of 28 Sgr by Saturn - Saturn pole position and astrometrySaturn's ring plane-defined pole position is presently derived from the geometry of Saturn's July 3, 1989 occultation of 28 Sgr, as indicated by the timings of 12 circular edges in the Saturn C-ring as well as the edges of the Encke gap and the outer edge of the Keeler gap. The edge timings are used to solve for the position angle and opening angle of the apparent ring ellipses; the internal consistency of the data set and the redundancy of stations indicates an absolute error of the order of 5 km. The pole position thus obtained is consistent with the pole and ring radius scale derived from Voyager occultation observations.
Document ID
19930061830
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hubbard, W. B.
(NASA Headquarters Washington, DC United States)
Porco, C. C.
(NASA Headquarters Washington, DC United States)
Hunten, D. M.
(NASA Headquarters Washington, DC United States)
Rieke, G. H.
(NASA Headquarters Washington, DC United States)
Rieke, M. J.
(NASA Headquarters Washington, DC United States)
Mccarthy, D. W.
(NASA Headquarters Washington, DC United States)
Haemmerle, V.
(NASA Headquarters Washington, DC United States)
Clark, R.
(NASA Headquarters Washington, DC United States)
Turtle, E. P.
(NASA Headquarters Washington, DC United States)
Haller, J.
(Arizona Univ. Tucson, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1993
Publication Information
Publication: Icarus
Volume: 103
Issue: 2
ISSN: 0019-1035
Subject Category
Lunar And Planetary Exploration
Accession Number
93A45827
Funding Number(s)
CONTRACT_GRANT: NAGW-1555
CONTRACT_GRANT: NAGW-1876
CONTRACT_GRANT: NSF AST-87-15373
Distribution Limits
Public
Copyright
Other

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