A. Devyatkin, D. Gorshanov, K. N. Naumov, S. N. Petrova, A. Martyusheva, V.V. Kouprianov, A.Kh. Aliev, S. Rusov
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Observations of potentially hazardous asteroid 2001 QQ142 (139622) with mirror astrograph ZA-320M and D.D. Maksutov meniscus telescope MTM-500M of Pulkovo Observatory
The astrometric observations of potentially hazardous asteroid 2001 QQ142 (139622) were made during its apparition after its close approach to the Earth. The observations were made using the mirror astrograph ZA-320M and D.D. Maksutov meniscus telescope MTM-500M of Pulkovo Observatory. The RMS of obtained series of the asteroid positions are σ = ±0''.21 for ZA-320M and σ = ±0''.07 for MTM-500M observations.
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