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All Journal Jurnal Matematika & Sains Spektra: Jurnal Fisika dan Aplikasinya Jurnal Sains Dirgantara Bulletin of Computer Science Research Aptekmas : Jurnal Pengabdian Kepada Masyarakat Indonesian Journal of Physics (IJP) Solusi Bersama : Jurnal Pengabdian Dan Kesejahteraan Masyarakat
Budi Dermawan
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Journal : Indonesian Journal of Physics (IJP)

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Dynamical Evolution of Sub-km Sized Main-belt Asteroids with Involving Thermal Radiation Effects Budi Dermawan; A. Fermita
Indonesian Journal of Physics Vol 22 No 4 (2011): Vol. 22 No. 4, October 2011
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (900.053 KB) | DOI: 10.5614/itb.ijp.2011.22.4.3

Abstract

Inconsistencies between asteroid’s evolutionary model and observational results have been convincingly explained by thermal radiation effects that cause asteroids to experience orbital drifts. To investigate influences of the effects, we conducted 10 million yr orbital integration of hypothetical sub-km sized Main-belt asteroids. Numerical integration was run to propagate orbital dynamics of the asteroids by taking into account typical physical parameters of regolith- and basaltic-type surfaces of asteroids. Delivery processes from the Main-belt asteroids to near-Earth space are occurred by the aids of planetary orbital resonances and gravitational perturbations. In general, we find that thermal radiation effects play as an important role in the early evolution (< 1 million yr), which guide the asteroids to follow different evolutionary paths than those of without involving the effects. This study indicates that asteroids whose surface belongs to basaltic-type have higher orbital mobility.
CCD Photometry of Comet 73P/Schwassmann-Wachmann 3 during Its 2006 Apparition Observed from the Bosscha Observatory Budi Dermawan; P. Mahasena; Taufiq Hidayat; D. Mandey; Muhamad Irfan
Indonesian Journal of Physics Vol 22 No 4 (2011): Vol. 22 No. 4, October 2011
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (209.749 KB) | DOI: 10.5614/itb.ijp.2011.22.4.4

Abstract

On 9-10 May 2006 UT comet 73P/Schwassmann-Wachmann 3 (73P/SW3) passed 0.093 AU from the Earth, being slightly farther away than its discovery on 1930. Interestingly, it has been reported since 1995 that the comet has been breaking up to many components during its trajectory orbiting the Sun with a period of 5.4 years. Here we report our CCD photometric observations of major components B and C during its 2006 apparition. Successful observations were done on 12-14 May 2006 UT at the Bosscha Observatory, Lembang. Since comet is a moving object, we carried out stacking techniques to combine our images in order to strengthen the signal-to-noise ratio. Our investigations to their surface brightness show that the coma of 73P/SW3 was not in a steady state. Under assumption of a steady state coma, the dust production rate of the component is found to be 24.7 cm and the mass-loss rate of 4.94 kg s-1
Co-Authors A. Fermita Abdul Kadir Achmad Zainur Rozzykin Alvina Zahra Ananda Nur Hidayat Avivah Yamani Ayu Dyah Pangestu Boedi, Soelistijono D. Mandey Firdaus, Iqbal Henny Septiana Amalia Muhamad Irfan Muhammad Irfan Muhammad Maladi Nida Fadhila P. Mahasena Paniran Putra Mahasena Ratna Satyaningsih Selpiyani Br Simanjorang Sparisoma Viridi Syamsuyurnita Syamsuyurnita Taufiq Hidayat