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Fig. 3
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Lomb-Scargle periodogram of 2001 QJ142. The number of the harmonics of the model curves is set to unity. A peak frequency corresponding to half of a possible rotation period, 311.9 s, is indicated. Solid, dashed, and dot-dashed horizontal lines show 90.0, 99.0, and 99.9% confidence levels, respectively.
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