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Peer-reviewedCC BY 4.0Monthly Notices of the Royal Astronomical Society

Orientation of the spin axes of large Kuiper belt bodies as an indicator of the mechanism of their origin

  • A M Kazantsev1
  1. 1Astronomical Observatory of Taras Shevchenko National University of Kyiv (Observatorna st., 3, Kyiv – 53, Ukraine, 04053)
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Abstract

The paper analyses the orientation of the spin axes of Kuiper Belt (KB) bodies that have satellites. For most of these bodies, the axes orientations were estimated under the assumption that the orbital planes of the satellites lie close to the bodies' equatorial planes. It was found that the spin axes of large scattered disks and plutinos' bodies, including four dwarf planets, are inclined at relatively small angles to the planes of their heliocentric orbits. This feature points to a possibility that all the scattered disk bodies, together with the bodies in the 3:2 resonance with Neptune, originated from the disruption of a single large body. The origin of the bodies of the so-called “cold” component of the KB is believed to differ from that of the scattered disk. The orientation of the spin axes of these bodies may also provide further evidence supporting this distinction.

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Cite

BibTeXRIS
BibTeX
@article{kazantsev2026orientation,
  title = {{Orientation of the spin axes of large Kuiper belt bodies as an indicator of the mechanism of their origin}},
  author = {A M Kazantsev},
  journal = {Monthly Notices of the Royal Astronomical Society},
  year = {2026},
  month = nov,
  doi = {10.1093/mnras/stag2125},
  url = {https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag2125/9015998},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Orientation of the spin axes of large Kuiper belt bodies as an indicator of the mechanism of their origin
AU  - A M Kazantsev
PY  - 2026
DA  - 2026/11/06
JO  - Monthly Notices of the Royal Astronomical Society
DO  - 10.1093/mnras/stag2125
UR  - https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag2125/9015998
AB  - The paper analyses the orientation of the spin axes of Kuiper Belt (KB) bodies that have satellites. For most of these bodies, the axes orientations were estimated under the assumption that the orbital planes of the satellites lie close to the bodies' equatorial planes. It was found that the spin axes of large scattered disks and plutinos' bodies, including four dwarf planets, are inclined at relatively small angles to the planes of their heliocentric orbits. This feature points to a possibility that all the scattered disk bodies, together with the bodies in the 3:2 resonance with Neptune, originated from the disruption of a single large body. The origin of the bodies of the so-called “cold” component of the KB is believed to differ from that of the scattered disk. The orientation of the spin axes of these bodies may also provide further evidence supporting this distinction.
SN  - 0035-8711
SN  - 1365-2966
ER  -