Tidal evolution of Dysnomia, satellite of the dwarf planet Eris

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The past tidal evolution of the satellite Dysnomia of the dwarf planet Eris can be inferred from the current physical and orbital properties of the system. Preliminary considerations, which assumed a circular orbit for the satellite, suggested that the satellite formed close to the planet, perhaps as a result of a giant impact, and that it is thus unlikely that smaller satellites lie further out. However, if the satellite's orbit is eccentric, even if the eccentricity is very small, a qualitatively different past tidal evolution may be indicated. Early in the Solar System's history, the satellite may have been on a highly eccentric orbit much farther from the planet than it is now, suggestive of a capture origin. Additional satellites farther out cannot be ruled out.

Original languageEnglish (US)
Pages (from-to)847-849
Number of pages3
JournalIcarus
Volume194
Issue number2
DOIs
StatePublished - Apr 2008

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dwarf planets
planet
planets
eccentric orbits
satellite orbits
circular orbits
eccentrics
eccentricity
solar system
physical properties
histories
orbitals

Keywords

  • dynamics
  • formation
  • Kuiper Belt
  • Satellites
  • Tides
  • Trans-neptunian objects

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Tidal evolution of Dysnomia, satellite of the dwarf planet Eris. / Greenberg, Richard J.; Barnes, Rory.

In: Icarus, Vol. 194, No. 2, 04.2008, p. 847-849.

Research output: Contribution to journalArticle

Greenberg, Richard J. ; Barnes, Rory. / Tidal evolution of Dysnomia, satellite of the dwarf planet Eris. In: Icarus. 2008 ; Vol. 194, No. 2. pp. 847-849.
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