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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 3.

Reflectance photometric spectrum of 2020 CD3 consisting of B, g, V, R, I, and RG850 observations of 2020 CD3 on 2020 March 23 UTC. The λeff locations of the B, g, V, R, I, and RG850 filters have been plotted as vertical dashed lines. The data points for the normalized reflectivity of 2020 CD3 have been offset slightly from their location in the wavelength direction. The error bars on the spectrum data points correspond to 1σ uncertainty. The spectrum has been normalized to unity at 550 nm, indicated by the red cross. The spectral range of S-, V-, and C-type asteroids from the Bus–DeMeo asteroid taxonomic catalog (DeMeo et al. 2009) is overplotted, with the V-type spectrum most closely resembling the spectra of 2020 CD3. The average spectrum of coarse bulk lunar rock samples is plotted for reference (Isaacson et al. 2011).

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