Searches for transplutonian planets using long-period comets

Details Searches for transplutonian planets using long-period comets Searches for transplutonian planets using long-period comets

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006astl...32..353k&link_type=abstract

Astronomy Letters, vol. 32, Issue 5, p.353-360

Astronomy and Astrophysics

Astronomy

3

Pacs Numbers 96.50.Gn

Scientific paper

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.

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