publication . Article . Preprint . 2017

Discovery and Physical Characterization of a Large Scattered Disk Object at 92 au

D. W. Gerdes; Masao Sako; S. Hamilton; Ke Zhang; Tali Khain; Juliette C. Becker; James Annis; William Wester; Gary Bernstein; Colin Scheibner; ...
Open Access English
  • Published: 12 Apr 2017
We report the observation and physical characterization of the possible dwarf planet \UZ\ ("DeeDee"), a dynamically detached trans-Neptunian object discovered at 92 AU. This object is currently the second-most distant known trans-Neptunian object with reported orbital elements, surpassed in distance only by the dwarf planet Eris. The object was discovered with an $r$-band magnitude of 23.0 in data collected by the Dark Energy Survey between 2014 and 2016. Its 1140-year orbit has $(a,e,i) = (109~\mathrm{AU}, 0.65, 26.8^{\circ})$. It will reach its perihelion distance of 38 AU in the year 2142. Integrations of its orbit show it to be dynamically stable on Gyr time...
Persistent Identifiers
arXiv: Astrophysics::Earth and Planetary AstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics
free text keywords: infrared: planetary systems; Kuiper belt: general; methods: observational; techniques: photometric, methods: observational, techniques: photometric, Kuiper belt: general, infrared: planetary systems, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Earth and Planetary Astrophysics, Space and Planetary Science, Astronomy and Astrophysics, Dwarf planet, Albedo, Astrophysics, Orbit, Dark energy, Neptune, Eris, biology.organism_classification, biology, Physics, Orbital elements, Magnitude (mathematics)
Funded by
NSF| Collaborative Research: The Dark Energy Survey Data Management Operations
  • Funder: National Science Foundation (NSF)
  • Project Code: 1138766
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • Funding stream: FP7 | SP2 | ERC
NSF| Collaborative Research: Characterizing the Trans-Neptunian Solar System with the Dark Energy Survey
  • Funder: National Science Foundation (NSF)
  • Project Code: 1515015
Testing the Dark Energy Paradigm and Measuring Neutrino Mass with the Dark Energy Survey
  • Funder: European Commission (EC)
  • Project Code: 291329
  • Funding stream: FP7 | SP2 | ERC
NSF| Graduate Research Fellowship Program (GRFP)
  • Funder: National Science Foundation (NSF)
  • Project Code: 1256260
  • Funding stream: Directorate for Education & Human Resources | Division of Graduate Education
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