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<b>Abstract</b>— <p>On the basis of models of the trans-Neptunian disk, which take into account the gravitational interaction of planetesimals, we consider the origin of near-Neptunian objects with perihelion distances of 28 &lt; <i>q</i> &lt; 35.5 AU and semimajor axes 60 &lt; <i>a</i> &lt; 1000 AU, which are the source of observed comets of the Jupiter family. It is shown that the majority of objects come to the near-Neptunian region from the distant trans-Neptunian region, defined in this work by orbits with <i>q</i> &gt; 60 AU, <i>a</i> &lt; 1000 AU or 40 &lt; <i>q</i> &lt; 60 AU, 200 &lt; <i>a</i> &lt; 1000 AU. This result has a crucial difference from the previously considered models, which propose as a source of near-Neptunian objects and comets of the Jupiter family the so-called scattered disk, defined by orbits with <i>q</i> &lt; 60 AU, 50 &lt; <i>a</i> &lt; 200 AU. Distant trans-Neptunian objects are a natural result of the dynamical evolution of the outer planetesimal disk taking into account its self-gravity, and the gravitational interaction of these objects creates a flux of bodies into the near-Neptunian region.</p>

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Migration of Distant Trans-Neptunian Objects into Near-Neptunian Orbits with Large Eccentricities

  • 期刊论文

  • 发表日期：

    2026年6月18日

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  • V. V. Emel’yanenko

摘要

Abstract—

On the basis of models of the trans-Neptunian disk, which take into account the gravitational interaction of planetesimals, we consider the origin of near-Neptunian objects with perihelion distances of 28 < q < 35.5 AU and semimajor axes 60 < a < 1000 AU, which are the source of observed comets of the Jupiter family. It is shown that the majority of objects come to the near-Neptunian region from the distant trans-Neptunian region, defined in this work by orbits with q > 60 AU, a < 1000 AU or 40 < q < 60 AU, 200 < a < 1000 AU. This result has a crucial difference from the previously considered models, which propose as a source of near-Neptunian objects and comets of the Jupiter family the so-called scattered disk, defined by orbits with q < 60 AU, 50 < a < 200 AU. Distant trans-Neptunian objects are a natural result of the dynamical evolution of the outer planetesimal disk taking into account its self-gravity, and the gravitational interaction of these objects creates a flux of bodies into the near-Neptunian region.