Irregular Satellites of the Planets: Products of Capture in the Early Solar System

@article{Jewitt2007IrregularSO,
  title={Irregular Satellites of the Planets: Products of Capture in the Early Solar System},
  author={David C. Jewitt and Nader Haghighipour},
  journal={Annual Review of Astronomy and Astrophysics},
  year={2007},
  volume={45},
  pages={261-295}
}
All four giant planets in the Solar system possess irregular satellites, characterized by large, highly eccentric and/or inclined orbits that are distinct from the nearly circular, uninclined orbits of the regular satellites. This difference can be traced directly to different modes of formation. Whereas the regular satellites grew by accretion within circumplanetary disks the irregular satellites were captured from initially heliocentric orbits at an early epoch. Recently, powerful survey… 

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