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Suryadi Siregar
Bosscha Observatory and Astronomy Research Division, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung
Mathematics

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Recalculating the Orbit of α-Centauri AB Suryadi Siregar; Hanindyo Kuncarayakti
Jurnal Matematika & Sains Vol 12, No 3 (2007)
Publisher : Institut Teknologi Bandung

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Abstract

The two main components of the closest star system, α Centauri AB (RA 14h39m, Dec -60o50, J2000.0) is indubitablyone of the most studied visual double stars. This paper presents the results of our recalculation of orbital and physicalparameters of the system using Thiele-van den Bos method, based on observational data from year 1900 to 2002.Despite some significant discrepancies, in general our results confirmed previous results of orbital parameterdeterminations using different method.
Migration of Near Earth Asteroid to Jovian-Crosser Asteroid : Case Study 3552 Don Quixote Suryadi Siregar
Jurnal Matematika & Sains Vol 15, No 1 (2010)
Publisher : Institut Teknologi Bandung

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Abstract

It is generally recognized that main-belt asteroids (MBAs) and nuclei of extinct comets are the two main sources for the Near-Earth-Asteroids (NEAs). Theoretical studies of NEAs dynamics and numerical modelling of their orbital motions showed that the resonance mechanism for supplying NEAs is quite sufficient to sustain this population. Asteroid 1983 SA, also known as 3552 Don Quixote, is one of Near Earth Asteroids (NEAs) and the most probable candidates for NEAs of the cometary origin. In this work, an investigation on the evolution of the orbit is done by using the SWIFT subroutine package, where the gravitational perturbations of eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune are considered. Migration of asteroid 3552 Don Quixote from Near Earth Asteroids (NEAs) to Jovian-crosser asteroid is found.
Co-Authors Hanindyo Kuncarayakti