Orbit computation for transneptunian objects

Details Orbit computation for transneptunian objects Orbit computation for transneptunian objects

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icar..161..419v&link_type=abstract

Icarus, Volume 161, Issue 2, p. 419-430.

Statistics

Computation

11

Scientific paper

Using statistical orbital ranging, we systematically study the orbit computation problem for transneptunian objects (TNOs). We have automated orbit computation for large numbers of objects, and, more importantly, we are able to obtain orbits even for the most sparsely observed objects (observational arcs of a few days). For such objects, the resulting orbit distributions include a large number of high-eccentricity orbits, in which TNOs can be perturbed by close encounters with Neptune. The stability of bodies on the computed orbits has therefore been ascertained by performing a study of close encounters with the major planets. We classify TNO orbit distributions statistically, and we study the evolution of their ephemeris uncertainties. We find that the orbital element distributions for the most numerous single-apparition TNOs do not support the existence of a postulated sharp edge to the belt beyond 50 AU. The technique of statistical ranging provides ephemeris predictions more generally than previously possible also for poorly observed TNOs.

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