Observations and study of the orbital dynamics of some near-Sun asteroids

Abstract

The paper presents the results of positional observations of nine near-Sun asteroids with the Zeiss-2000 telescope at the Center for Collective Use “Terskol Observatory” during 2020–2023. It demonstrates that, under favorable weather conditions, it is possible to obtain observations of asteroids with observed magnitudes up to 22. Particular attention is paid to the objects (399457) 2002 PD43 and 2008 MG1. We managed to obtain observations of (399457) 2002 PD43 at an observed magnitude of 21.6m, making our observations the first of the summer 2022 opposition. The results of the orbit fitting and the study of the probabilistic orbital evolution of 2008 MG1 are considered separately, since the observations at the Terskol observatory significantly extend its arc length and reduce the orbit uncertainty.