Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pazh...10..394a&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 10, May 1984, p. 394-396) Soviet Astronomy Letters (ISSN 0360-0327), vol. 10, May-June
Astronomy and Astrophysics
Astronomy
1
Celestial Mechanics, Comets, Orbit Perturbation, Interstellar Magnetic Fields, Orbital Elements
Scientific paper
A system of differential equations for the evolution of the orbital elements of a comet subject to regular galactic forces has been derived, assuming a circular orbit for the sun around the Galaxy. The general solution to the equations indicates that an initial straight-line orbit lying either in the galactic plane or along the z-axis will not evolve. If the straight-line orbit is inclined to the galactic plane by a 27.65 deg angle, it will become a circular orbit only after an infinite time span. A formula has been obtained for the dispersion in the incremental angular momentum of an initially degenerate orbit due to the cumulative effect of irregular galactic forces. Formulas are presented which can be used to calculate the changes in the parameter of a highly elongated orbit over various time intervals for various values of the semimajor axis.
Antonov Vadim A.
Todriya Z. P.
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