Other
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.4010g&link_type=abstract
American Astronomical Society, DPS meeting #42, #40.10; Bulletin of the American Astronomical Society, Vol. 42, p.1000
Other
Scientific paper
The trans Neptunian Object 2004 XR190 (Buffy) is located beyond the classical Kuiper belt and has a high inclination at 46.7° and a comparatively low eccentricity at 0.106. The origin of this unusual orbit has been credited to the perturbations of a putative passing star, a rogue planet or resonance dynamics. It is a fact that scattered objects can be trapped in mean motion resonances with Neptune which, associated with Kozai resonances, produces large amplitude coupled oscillations of the inclination and eccentricity of a trapped object. This suggests a possible mechanism to produce 2004 XR190 orbit. The problem is however that Buffy is not currently in any mean motion resonance with Neptune. Here I show evidence that 2004 XR190 was a scattered object in the past that underwent an episode of a 3:8 period commensurability with Neptune and eventually escaped this resonance while Neptune was migrating. I show that 2004 XR190 eccentricity and inclination are well in accord with what would be expected if this unusual TNO did experience this resonance trapping/escape mechanism. Other important MMR resonances with Neptune that could also produce Buffy-like orbits are compared.
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