The motion of major planets from observations 1769–1988 and some astronomical constants

  title={The motion of major planets from observations 1769–1988 and some astronomical constants},
  author={George A. Krasinsky and Elena V. Pitjeva and M. L. Sveshnikov and L. I. Chunayeva},
  journal={Celestial Mechanics and Dynamical Astronomy},
AbstractModern planetary theories may be considered as a realisation of a four-dimensional dynamical reference frame. The existence of secular trends between the dynamical system and the adopted system of the Fundamental Catalogue (as well as between time scales involved) has been studied by discussing planetary observations of different types and by comparison with a numerical theory constructed for the time span 1769–1988. Parameters of the theory were fitted to radar ranging data for 1961… 
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