Binary stripping as a plausible origin of correlated pairs of extreme trans-Neptunian objects
arXiv:1709.06813 · doi:10.1007/s10509-017-3181-1
Abstract
Asteroids that follow similar orbits may have a dynamical connection as their current paths could be the result of a past interaction with a massive perturber. The pair of extreme trans-Neptunian objects or ETNOs (474640) 2004 VN112-2013 RF98 exhibits peculiar relative orbital properties, including a difference in longitude of the ascending node of just 1.61 degrees and 3.99 degrees in inclination. In addition, their reflectance spectra are similar in the visible portion of the spectrum. The origin of these similarities remains unclear. Neglecting observational bias, viable scenarios that could explain this level of coincidence include fragmentation and binary dissociation. Here, we present results of extensive direct N-body simulations of close encounters between wide binary ETNOs and one trans-Plutonian planet. We find that wide binary ETNOs can dissociate during such interactions and the relative orbital properties of the resulting unbound couples match reasonably well those of several pairs of known ETNOs, including 474640-2013 RF98. The possible presence of former binaries among the known ETNOs has strong implications for the interpretation of the observed anisotropies in the distributions of the directions of their orbital poles and perihelia.
21 pages, 13 figures, 1 table, revised to match version published in Astrophysics and Space Science
References in corpus (20)
- The Occurrence and Mass Distribution of Close-in Super-Earths, Neptunes, and Jupiters
- Origin of the Structure of the Kuiper Belt during a Dynamical Instability in the Orbits of Uranus and Neptune
- A Statistical Reconstruction of the Planet Population Around Kepler Solar-Type Stars
- Discovery of a wide planetary-mass companion to the young M3 star GU Psc
- OSSOS VI. Striking Biases in the detection of large semimajor axis Trans-Neptunian Objects
- Formation of Kuiper-belt binaries through multiple chaotic scattering encounters with low-mass intruders
- Extreme trans-Neptunian objects and the Kozai mechanism: signalling the presence of trans-Plutonian planets
- New Extreme Trans-Neptunian Objects: Towards a Super-Earth in the Outer Solar System
- Mutual Orbits and Masses of Six Transneptunian Binaries
- Formation of Kuiper Belt Binaries
- Constraints on Planet Nine's Orbit and Sky Position within a Framework of Mean Motion Resonances
- Observational bias and the clustering of distant eccentric Kuiper belt objects
- Consequences of a Distant Massive Planet on the Large Semi-major Axis Trans-Neptunian Objects
- Formation of Super-Earth Mass Planets at 125-250 AU from a Solar-type Star
- Discovery of a satellite of the large trans-Neptunian object (225088) 2007OR10
- Flipping minor bodies: what comet 96P/Machholz 1 can tell us about the orbital evolution of extreme trans-Neptunian objects and the production of near-Earth objects on retrograde orbits
- A serendipitous all sky survey for bright objects in the outer solar system
- Study and application of the resonant secular dynamics beyond Neptune
- Finding Planet Nine: apsidal anti-alignment Monte Carlo results
- Evidence for a possible bimodal distribution of the nodal distances of the extreme trans-Neptunian objects: avoiding a trans-Plutonian planet or just plain bias?
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- Dynamically correlated minor bodies in the outer Solar system
- Peculiar orbits and asymmetries in extreme trans-Neptunian space
- Binary asteroid scattering around white dwarfs
- Past the outer rim, into the unknown: structures beyond the Kuiper Cliff
- Memories of past close encounters in extreme trans-Neptunian space: Finding unseen planets using pure random searches
- Twisted extreme trans-Neptunian orbital parameter space: statistically significant asymmetries confirmed