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538 Friederike is a minor planet orbiting the Sun. Photometric observations at the Organ Mesa Observatory in New Mexico during 2012 showed a rotation period of 46.728 ± 0.004 hours with a brightness variation of 0.25 ± 0.02 in magnitude.〔 == References == # # (PDS lightcurve data ) # G. A. Krasinsky et al. ''Hidden Mass in the Asteroid Belt'', Icarus, Vol. 158, p. 98 (2002). # T. Mothé-Diniz et al. Rotationally Resolved Spectra of 10 Hygiea and a Spectroscopic Study of the Hygiea Family, Icarus, Vol. 152, p. 117 (2001). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「538 Friederike」の詳細全文を読む スポンサード リンク
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