Pluto and comets. 1. Does exist a group of comets associated with pluto?

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Scientific paper

We consider the possibility of the existence of periodic and long-period comets dynamically or evolutionarily connected with Pluto. In the case of periodic comets aphelion distances of comets and deviations of perihelions from the planetary movement plane are analyzed. We established that along with two objects, 12P and C/1917 F1, previously assigned to Pluto's family, another two comets C/1998 Y1 and C/2000 B4 discovered recently are of great interest as well. As the result of the analysis of remote nodes of orbits of long-period comets with respect to Pluto's movement plane a group consisting of 51 comets was formed. The value of the remote nodes of their orbits varies between 29.5 and 49.5 AU. The comparative analysis of cometary intersections over 73 planes showed an excess of the value N = 51. The excess is especially noticeable for the comets with e<1 and for the comets discovered after 1950. Our results indicate that a hypothesis on the existence of Pluto's cometary family has certain statistical evidences.

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