Evolution and Dynamics of Triple Asteroid Systems

• Applicant: Professor Dr. Jürgen Oberst
• Subject Area: Astrophysics and Astronomy
• Term: from 2019 to 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 413911837

We investigate the characteristics and dynamics of triple NEO (Near-Earth Asteroid) systems, three of which are currently known: 2001 SN263, 1994 CC, and 3122 Florence. Using analytical and numerical techniques, we investigate the orbital and rotational states of the system components on time-scales of 105 years and beyond. Furthermore, we study the orbital life times of spacecraft in the triple systems. Special attention is given to perturbation by solar radiation pressure and resonances, which can lead to stable trajectories beneficial for remote sensing, mass determination, and gravity field mapping. Furthermore, we search for stable regions, which may support the accumulation of dust and formation of rings and tori. Multiple NEO systems may provide important clues on the origin and evolution of the NEO population. The three triple systems mentioned above have been identified as attractive targets for future space missions.

• DFG Programme: Research Grants
• Co-Investigator: Dr. Hauke Hußmann