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Characterization of Temporarily Captured Minimoon 2020 CD3 by Keck Time-resolved Spectrophotometry

  • Authors: Bryce T. Bolin, Christoffer Fremling, Timothy R. Holt, Matthew J. Hankins, Tomás Ahumada, Shreya Anand, Varun Bhalerao, Kevin B. Burdge, Chris M. Copperwheat, Michael Coughlin, Kunal P. Deshmukh, Kishalay De, Mansi M. Kasliwal, Alessandro Morbidelli, Josiah N. Purdum, Robert Quimby, Dennis Bodewits, Chan-Kao Chang, Wing-Huen Ip, Chen-Yen Hsu, Russ R. Laher, Zhong-Yi Lin, Carey M. Lisse, Frank J. Masci, Chow-Choong Ngeow, Hanjie Tan, Chengxing Zhai, Rick Burruss, Richard Dekany, Alexandre Delacroix, Dmitry A. Duev, Matthew Graham, David Hale, Shrinivas R. Kulkarni, Thomas Kupfer, Ashish Mahabal, Przemyslaw J. Mróz, James D. Neill, Reed Riddle, Hector Rodriguez, Roger M. Smith, Maayane T. Soumagnac, Richard Walters, Lin Yan, and Jeffry Zolkower

2020 The Astrophysical Journal Letters 900 L45.

  • Provider: AAS Journals

Caption: Figure 5.

Top panel: Lomb–Scargle periodogram of light-curve period vs. spectral power (Lomb 1976) for the Keck I/LRIS light-curve data from the 2020 March 23 UTC observations. A peak in the power is located at a double-peaked light-curve period of 573.4 s. Bottom panel: phase-dispersion minimization analysis of light-curve rotation period vs. Θ metric (Stellingwerf 1978). The Θ metric is minimized at a double-peaked rotation period of 561.6 s, consistent with the 573.4 s rotation period found with the Lomb–Scargle periodogram.

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