OSSOS: IV. Discovery of a dwarf planet candidate in the 9:2 resonance

  title={OSSOS: IV. Discovery of a dwarf planet candidate in the 9:2 resonance},
  author={M. Bannister and M. Alexandersen and S. Benecchi and Ying-Tung Chen and A. Delsanti and W. Fraser and B. Gladman and M. Granvik and W. Grundy and A. Guilbert-Lepoutre and S. Gwyn and W. Ip and M. Jakubik and R. Jones and N. Kaib and J. Kavelaars and P. Lacerda and S. Lawler and M. Lehner and Hsing-Wen Lin and P. S. Lykawka and M. Marsset and R. Murray-Clay and K. Noll and A. Parker and J. Petit and R. Pike and P. Rousselot and M. Schwamb and C. Shankman and P. Veres and P. Vernazza and K. Volk and Shiang-Yu Wang and R. Weryk},
  journal={arXiv: Earth and Planetary Astrophysics},
We report the discovery and orbit of a new dwarf planet candidate, 2015 RR$_{245}$, by the Outer Solar System Origins Survey (OSSOS). 2015 RR$_{245}$'s orbit is eccentric ($e=0.586$), with a semi-major axis near 82 au, yielding a perihelion distance of 34 au. 2015 RR$_{245}$ has $g-r = 0.59 \pm 0.11$ and absolute magnitude $H_{r} = 3.6 \pm 0.1$; for an assumed albedo of $p_V = 12$% the object has a diameter of $\sim670$ km. Based on astrometric measurements from OSSOS and Pan-STARRS1, we find… Expand

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