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The formation of Haumea and its family via binary merging

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  • Benjamin Proudfoot

    (Brigham Young University, N283 ESC)

  • Darin Ragozzine

    (Brigham Young University, N283 ESC)

Abstract

Dozens of families of asteroids in the asteroid belt have similar orbits and compositions because they formed through a collision. However, the icy debris beyond the orbit of Neptune, called the Kuiper Belt, contains only one known family, the Haumea family. So far, no self-consistent explanation for the formation of the Haumea family can match all geophysical and orbital characteristics of the family without invoking extremely improbable events. Here, we show that the family is adequately explained as the product of a merging binary near the end of Neptune’s orbital migration. The unique orbital signature of a merging binary, which was not found in extensive searches, is effectively erased during the final stages of migration, providing an explanation for all aspects of the Haumea family. By placing the formation of the Haumea family in the broader context of solar system formation, we demonstrate a proof-of-concept model for the formation of Haumea.

Suggested Citation

  • Benjamin Proudfoot & Darin Ragozzine, 2022. "The formation of Haumea and its family via binary merging," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29901-5
    DOI: 10.1038/s41467-022-29901-5
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    References listed on IDEAS

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    1. Michael E. Brown & Kristina M. Barkume & Darin Ragozzine & Emily L. Schaller, 2007. "A collisional family of icy objects in the Kuiper belt," Nature, Nature, vol. 446(7133), pages 294-296, March.
    2. Craig B. Agnor & Douglas P. Hamilton, 2006. "Neptune's capture of its moon Triton in a binary–planet gravitational encounter," Nature, Nature, vol. 441(7090), pages 192-194, May.
    3. J. L. Elliot & M. J. Person & C. A. Zuluaga & A. S. Bosh & E. R. Adams & T. C. Brothers & A. A. S. Gulbis & S. E. Levine & M. Lockhart & A. M. Zangari & B. A. Babcock & K. DuPré & J. M. Pasachoff & S., 2010. "Size and albedo of Kuiper belt object 55636 from a stellar occultation," Nature, Nature, vol. 465(7300), pages 897-900, June.
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