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Orientation-dependent effects in Oort's theory of comet origin. II - Anisotropies in the distribution of long-period comet orbits.The statistical significance of anisotropies in the distribution of orbital orientations among the long-period and nearly parabolic comets is evaluated. It is suggested that these anisotropies are not the result of observational selection effects. A numerical model for the distribution of orbital orientations is constructed, based on Oort's theory of comet origin and the assumption that the observed anisotropies are caused by multiple planetary perturbations over the course of many perihelion passages. The model, which is restricted to comets with perihelion distances less than 0.3 AU, does not predict any significant anisotropies.
Document ID
19730059665
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Joss, P. C.
(Cornell University Ithaca, N.Y.; Institute for Advanced Study, Princeton, N.J., United States)
Date Acquired
August 7, 2013
Publication Date
May 1, 1973
Publication Information
Publication: Icarus
Volume: 19
Subject Category
Space Sciences
Accession Number
73A44467
Funding Number(s)
CONTRACT_GRANT: NSF GP-16147A1
CONTRACT_GRANT: NGR-33-010-082
Distribution Limits
Public
Copyright
Other

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