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The obliquity of PlutoPluto's obliquity (the angle between its spin axis and orbit normal) varies between 102 and 126 deg over a period of about 3 million years. These oscillations are nearly sinusoidal and quite stable, leading to only modest changes in the insolation regime. Thus, Pluto's rotation has been slightly retrograde ever since its current orbit and rotation rate were established.
Document ID
19830062865
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Dobrovolskis, A. R. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Harris, A. W. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Date Acquired
August 11, 2013
Publication Date
August 1, 1983
Publication Information
Publication: Icarus
Volume: 55
ISSN: 0019-1035
Subject Category
Astronomy
Accession Number
83A44083
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other

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