Paper: astro-ph/0512430
Date: Fri, 16 Dec 2005 03:27:48 GMT (78kb)

Title: Discovery of a low-eccentricity, high-inclination Kuiper belt object at
58 AU

Authors: R. L. Allen, B. Gladman, J.J. Kavelaars, J-M. Petite, J. Wm. Parker,
P. Nicholson

Comments: 3 figures, submitted to ApJL
\\
We report the discovery of the first trans-neptunian object, designated 2004
XR190, with a nearly-cirular orbit beyond the 2:1 mean-motion resonance.
Fitting an orbit to 23 astrometric observations spread out over 12 months
yields an orbit of a=57.2\pm0.4, e=0.08\pm0.04, and i=46.6 deg. All viable
orbits have perihelia distances q>49 AU. The very high orbital inclination of
this extended scattered disk object might be explained by several models, but
its existence again points to a large as-yet undiscovered population of
transneptunian objects with large orbital perihelia and inclination.

\\ ( http://arXiv.org/abs/astro-ph/0512430 , 78kb)