Precession of triaxial cometary nuclei

Details Precession of triaxial cometary nuclei Precession of triaxial cometary nuclei

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988icar...74..377j&link_type=abstract

Icarus (ISSN 0019-1035), vol. 74, June 1988, p. 377-382.

Statistics

Computation

9

Astronomical Models, Axes Of Rotation, Comet Nuclei, Euler Equations Of Motion, Gas Jets, Oblate Spheroids, Spin Dynamics, Comets, Comet Nuclei, Precession, Models, Jetting, Torque, Rotation, Axis, Numerical Methods, Calculations, Comparisons, Energy, Source, Parameters, Halley

Scientific paper

A phase-averaged system of equations, in which torque is averaged over a rotation about the spin axis, is used in the present modeling of cometary nuclei as homogeneous and rotating triaxial ellipsoids whose precession during perihelion passage is due to a solar heating-generated dust-and-gas jet. The results of numerical computations of the rotation axis inertial space precession with this phase-averaged system are compared with those obtained with the exact Euler-Poisson system of equations. Parameters appropriate to the Comet Halley nucleus are chosen.

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