1I/‘Oumuamua as an N2 Ice Fragment of an exo‐Pluto Surface: I. Size and Compositional Constraints

@article{Jackson20211IOumuamuaAA,
  title={1I/‘Oumuamua as an N2 Ice Fragment of an exo‐Pluto Surface: I. Size and Compositional Constraints},
  author={Alan P. Jackson and Steven J. Desch},
  journal={Journal of Geophysical Research: Planets},
  year={2021},
  volume={126}
}
  • A. Jackson, S. Desch
  • Published 16 March 2021
  • Geology, Physics
  • Journal of Geophysical Research: Planets
The origin of the interstellar object 1I/‘Oumuamua has defied explanation. We perform calculations of the non‐gravitational acceleration that would be experienced by bodies composed of a range of different ices and demonstrate that a body composed of N2 ice would satisfy the available constraints on the non‐gravitational acceleration, size, and albedo, and lack of detectable emission of CO or CO2 or dust. We find that ‘Oumuamua was small, with dimensions 45 m × 44 m × 7.5 m at the time of… 
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Elliptical galaxies have dynamically hot (σ 1D ∼100–300 km s−1) populations of stars, and presumably, smaller objects like comets. Because interstellar minor bodies are moving much faster, they hit

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1I/‘Oumuamua as an N2 Ice Fragment of an Exo‐Pluto Surface II: Generation of N2 Ice Fragments and the Origin of ‘Oumuamua
The origin of the interstellar object 1I/‘Oumuamua has defied explanation. In a companion paper (Jackson & Desch, 2021), we show that a body of N2 ice with axes 45 m × 44 m × 7.5 m at the time of
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