Computer Derivation of Short-Period Lunar Perturbations

  • J. R. Cherniack
  • E. M. Gaposchkin
Part of the COSPAR-IAU-IAG/IUGG-IUTAM book series (IUTAM)

Abstract

The CDC 6400 computer was used to verify the literal algebra of Kozai’s short-period lunar perturbations. Most of Kozai’s results were verified; some errors were found and corrected. The output of the literal algebra program (SPASM) was Fortran arithmetic statements, which were compiled to produce a program that would evaluate the perturbations. SPASM operates directly on symbolic expressions. Some advantages of this approach over table-driven algebraic processors are observed.

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References

  1. 1.
    Gaposchkin, E. M.: Orbit Determination. Smithsonian Astrophys. Obs. Spec. Rep. No. 200, vol. 1(1966) 185.Google Scholar
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    Kozai, Y.: Lunisolar Perturbations with Short Periods. Smithsonian Astrophys. Obs. Spec. Rep. No. 235(1966).Google Scholar
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    Gaposchkin, E. M.: Space Research VIII, p. 76, Amsterdam: North-Holland 1968.Google Scholar
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    Hall, N. M., Cherniack, J. R.: Spasm User’s Manual. Smithsonian Astrophys. Obs. Spec. Rep. No. 291 (1969).Google Scholar
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    Davis, M. S.: Aatron. J. 73 (1968) 195.CrossRefGoogle Scholar
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    Cherniack, J. R.: Converting Trigonometric Polynomials to Linear Trigonometric Series (to be published).Google Scholar

Copyright information

© Springer Verlag, Berlin/Heidelberg 1970

Authors and Affiliations

  • J. R. Cherniack
    • 1
  • E. M. Gaposchkin
    • 1
  1. 1.Smithsonian InstitutionAstrophysical ObservatoryCambridgeUSA

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