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Grain Size Effects on UV-MIR Spectra of Aubrites: Clues for Interpreting E-type Near-Earth Asteroids

  • Authors: David C. Cantillo, Neil C. Pearson, Kaycee I. Ridenhour, Vrinda McBride, Miren Miranda, Adam Battle, Thomas Joyce, Juan A. Sanchez, Vishnu Reddy

David C. Cantillo et al 2026 The Planetary Science Journal 7 .

  • Provider: AAS Journals

Caption: Figure 16.

VNIR spectra of two end-member grain sizes of Norton County (slab and <45 μm powder) plotted against NEA 2023 DZ2 and main belt asteroid (434) Hungaria. Even with identical composition for the same meteorite, the grain size effects seen in Norton County may explain the discrepancies in 2023 DZ2 versus (434) Hungaria spectra (rough NEA surface versus fine-grained main belt surface). All spectra are set to unity at 1.5 μm.

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