1559 Kustaanheimo (1942 BF) is a main-belt asteroid discovered on January 20 1942 by L. Oterma at Turku. The discoverer named it after Finnish astronomer Paul Kustaanheimo.The light curve of 1559 Kustaanheimo shows a periodicity of 4.286 ± 0.003 hours during which time the brightness of the object varies by 0.25 ± 0.05 in magnitude.
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