#TITLE_ALTERNATIVE#

• Main Author: NURUL HUDA (NIM : 20314001), IBNU
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/22477
• Institution: Institut Teknologi Bandung

There are many small bodies in Solar System. Orbit's complexity of a small body is one of the interesting subjects in celestial mechanics. Some of small bodies located near region of Planet's Mean Motion Resonance (MMR) have complex orbits. Small bodies in Hilda's region are an example. Hilda is a region located near Jupiter MMR 3:2. Chaotic diffusion is an example of orbit's complexity which causes a shift of proper elements of celestial bodies. In general, this shift is difficult to be detected <br /> <br /> by observations because it needs a very long time. Moreover, this shift is also difficult to be detected using a model because it needs orbit's integration scheme with long integration time and small integration step. However, the detection is easier for the case of small bodies. Apart of chaotic diffusion, a shift of proper elements could be affected by the Yarkovsky thermal effects. The effects work only on celestial bodies having <br /> <br /> small sizes. Therefore, in the case of small bodies, chaotic diffusion and thermal effects are two mechanisms which influence the shift of the proper elements. Purpose of this study is to understand the process of chaotic diffusion of the small bodies located near the Jupiter MMR 3:2. Moreover, role of the Yarkovsky thermal effects to alter the orbit dynamics of small bodies in that region is also studied. Results of the integrations show that there are three types of orbit, i.e. regular orbit, strong chaotic, and chaotic diffusion with encounter. Computational analyses reveal that the longest residence time is located at semi-major axis of 4 au and eccentricity 0:15. Furthermore, the Yarkovsky thermal <br /> <br /> effects have also a contribution to change the type of orbit of small bodies.