| Autor: |
Wibowo, R. W., Dermawan, B., Wulandari, H. R. T., Putra, M., Sulistiyowati, Guritno, C. S. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2015, Vol. 1656 Issue 1, p1-4, 4p |
| Abstrakt: |
We investigated the cause of somewhat bimodal distribution of the Near-Earth Asteroids (NEAs) inclination. Numerical integrations, in term of Newtonian gravitation including thermal effect, were carried out on 270 artificial objects for 400 thousand years and on a thousand random-selected NEAs for one million years. Orbital coupling between distributions of semi major axis (a) and inclination (i) segregated at about 2 AU turns out to exhibit bump at about inclination of about 20°. This bump is emerged because of the diversity in orbital mobility of NEAs between regions of a < 2 AU and a > 2 AU, in which correspond to the secular and the mean-motion resonances. NEAs which located at a > 2 AU are dominated by the asteroids whose i < 15° and are protected by the secular resonance (v6) of Saturn. In addition, thermal effect play a role in delivering NEAs through perihelia of the Terrestrial planets, mainly affect orbital diffusion of NEAs when passing through the v6 region, and somehow restrain NEAs from falling into the Sun. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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