Summary: | Mutual events appearing in the lightcurve of 6764 Kirrillavrov unambiguously show that it is a binary asteroid with a rotation period of 4.739 ± 0.001 h, and an orbital period of 30.41 ± 0.01 h. Follow-up observations conducted during the 2021 opposition did not detect the mutual events due to unfavorable viewing geometry. Further observations during subsequent oppositions are encouraged. Fil: Polakis, Tom. Command Module Observatory; Islandia Fil: Oey, Julian. Blue Mountains Observatory; Australia Fil: Colazo, Milagros Rita. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina
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