Abstract
New periodic comet P/2019 LD2 (ATLAS) located on unstable quasi-Trojan orbit still an interesting object to study in the last years. We present the results of broadband observations of comet P/2019 LD2 (ATLAS) performed at the Sanglokh observatory of the Institute of Astrophysics, National Academy of Sciences of Tajikistan for 5 nights in August 2020. The dependence of the Afρ parameters of the comet on the aperture radius is measured. We obtained the coma corrected upper limit of the cometary radius Rn ≤ 6.1 ± 0.1 km and calculated the absolute magnitude H0 = 11.41 ± 0.03. Finson – Probstein diagram method used to explain a dust tail appearance. A subgroup of comets with orbital parameters close to P/2019 LD2 (ATLAS) is analyzed.
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