A921 VA. Discovered 1921 Nov. 5 by S. I. Belyavskij at Simeis.

Named in honor of Sergej Konstantinovich Kostinsky (1867-1936), one of the founders of astrophotography and photographical astrometry in Russia, a corresponding member of the U.S.S.R. Academy of Sciences and a staff member of the Pulkovo Observatory. He made numerous determinations of stellar parallaxes and proper motions, studied star clusters and nebulae, as well as planets and their satellites. (M 10548) Kostinsky is also honored by a lunar crater.

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