Investigation of the asteroids Masaakikoyama (13553) and 5131 (1990 BG) during their close approaches to the Earth

Astrometric and photometric observations of two near-Earth asteroids having poorly-defined axial rotation periods - Masaakikoyama (13553) and 5131 (1990 BG) - were performed using two telescopes of the Pulkovo Observatory (CAO RAS). Both asteroids in question have proved to be very slow rotators wit...

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Published inJournal of physics. Conference series Vol. 1400; no. 2; pp. 22035 - 22038
Main Authors Petrova, S N, Devyatkin, A V, Gorshanov, D L, L'vov, V N
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2019
Subjects
Asteroids
Earth rotation
Near-Earth Objects
Orbital elements
Physics
Telescopes
Tumbling
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Summary:Astrometric and photometric observations of two near-Earth asteroids having poorly-defined axial rotation periods - Masaakikoyama (13553) and 5131 (1990 BG) - were performed using two telescopes of the Pulkovo Observatory (CAO RAS). Both asteroids in question have proved to be very slow rotators with signs of tumbling. Using the data obtained their periods were derived (97.1 ± 0.2 and 157.82 ± 0.2 hours, respectively), dense lightcurves were obtained. Accuracy of the orbital elements of the asteroids was also improved.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1400/2/022035