Abstract
The paper contains the results of orbital evolution construction for Near-Earth asteroid (NEA) 137924 2000 BD19 with a small perihelion distance on the interval (−7500, 5000) years. Probabilistic orbital evolution of the asteroid was studied and some motion features, such as close and multiple approaches to Mercury and the Earth and the 3:4 mean motion resonance (MMR) with Venus, were revealed. Also, chaoticity of the NEA was estimated by indicator OMEGNO (Orthogonal Mean Exponential Growth factor of Nearby Orbits). The perturbations from planets, the Moon, relativistic effects of the Sun, the Sun oblateness, and the Yarkovsky effect were taken into account during the study of the asteroid dynamics. Since the Yarkovsky effect can have a significant influence on the asteroid motion due to the small perihelion distance, the paper presents the results of a study of its dynamics, both with and without this effect. The behavior of confidence regions has been analyzed and reasons for their changes have been revealed in both cases.
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