2145 Blaauw (1976 UF) is an outer main-belt asteroid discovered on October 24 1976 by Richard Martin West at La Silla. Photometric measurements made from the Oakley Southern Sky Observatory during 2012 gave a light curve with a period of 12.141 ± 0.003 hours and a variation in brightness of 0.18 ± 0.03 in magnitude.
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