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Planetary science

Kuiper-belt interlopers

Objects in the Kuiper belt, which lies beyond Neptune, occur as two distinct populations. One group may have migrated from a region closer to the Sun, caught by Neptune's gravity as it wandered in the early Solar System.

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Figure 1: On the origin of the 'hot' Kuiper-belt population.


  1. Gomes, R. S. Icarus 161, 404–418 (2003).

    Article  ADS  Google Scholar 

  2. Brown, M. Astron. J. 121, 2804–2814 (2001).

    Article  ADS  Google Scholar 

  3. Trujillo, C. A. & Brown, M. E. Astrophys. J. 566, 125–128 (2002).

    Article  ADS  Google Scholar 

  4. Levison, H. F. & Stern, S. A. Astron. J. 121, 1730–1735 (2001).

    Article  ADS  Google Scholar 

  5. Fernandez, J. A. & Ip, W. H. Planet. Space Sci. 44, 431–439 (1996).

    Article  ADS  Google Scholar 

  6. Hahn, J. M. & Malhotra, R. Astron. J. 117, 3041–3053 (1999).

    Article  ADS  Google Scholar 

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Correspondence to A. Morbidelli or H. F. Levison.

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Morbidelli, A., Levison, H. Kuiper-belt interlopers. Nature 422, 30–31 (2003).

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