Abstract

Contributed Talk - Splinter MinorBodies

Tuesday, 10 September 2024, 14:55   (S21)

The flyby that possibly shaped the outer Solar System: Insights from DESTINY

Amith Govind, Marco Bischoff, Frank Wagner, and Susanne Pfalzner
Forschungszentrum Jülich

This study investigates how a stellar flyby could explain the dynamical structure of the outer Solar System. It explores the methodology behind finding suitable perturber properties from a large multidimensional parameter space. The flyby can explain the existence of the detached population, including Sednoids, as well as the scattered-disc population, while maintaining the cold population of the classical Kuiper-belt bodies and not disturbing the planets of the Solar System. The suitable flyby has also been tested with long-term evolution of the planetesimals to check for stability of the system over a gigayear. We also present new insights gained from the DESTINY database, which is an open repository of the explored model simulations in this study. In addition to the raw data, it includes a comprehensive visualization of the model particle orbital properties post-flyby and a comparison with the currently observed properties of the Trans-Neptunian Objects (TNOs). This study not only offers a potential explanation for the current state of the outer Solar System but also provides a powerful tool for future research.