Astronomy Letters

, Volume 32, Issue 5, pp 353–360 | Cite as

Searches for transplutonian planets using long-period comets

  • V. V. Kuz’michev
  • V. P. Tomanov


We discuss the dynamical connection of long-period and nearly parabolic comets with hypothetical transplutonian planets. The statistics includes 792 comets with periods P > 200 years. The orbital plane of the parent planet can be determined from the observed distribution of the perihelia and poles of cometary orbits. The radius of a planetary orbit can be calculated using the Radzievsky-Tisseran criterion. We calculated the minimum distance of each of the 792 orbits to 11 hypothetical planetary orbits. Testing for the kinematic connection of comets with transplutonian planets yielded a negative result. The presence of the nodes of cometary orbits in the transplutonian region is shown to be the result of a geometric effect. We found a high concentration of the nodes and perihelia of cometary orbits in the zone of the terrestrial planets.

PACS numbers


Key words

comets transplutonian planets cometary orbits orbital elements Tisseran criterion Solar system 


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Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • V. V. Kuz’michev
    • 1
  • V. P. Tomanov
    • 1
  1. 1.Vologda State Pedagogical UniversityVologdaRussia

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