The global thermophysical properties of (433) Eros
نویسندگان
چکیده
We present results from a shape-based, rotationally-resolved thermophysical model of near-Earth asteroid (433) Eros, using reflected and near-IR spectra collected at the NASA Infrared Telescope Facility (IRTF) over 18 nights (25 disk-integrated in total) 2009 to 2019. The data sample variety viewing geometries, illumination angles, rotational phases therefore allow us characterize Eros's surface physical properties detail, particularly wavelengths thermal regime (? > 3.5 ?m) that were not measured by NEAR Shoemaker mission. shape, spin state, density, albedo, other incorporated into our model, leaving inertia roughness as free parameters. find range 100–150 J m?2 K?1 s-1/2 crater fraction 0.3–0.4 with opening angle 130° (equivalent adirectional rms slope 32° +/? 4°) fit 1? level, but do remaining 7 spectra. This suggests vary its surface, which has important implications for linking remote sensing spacecraft measurements asteroids.
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1Center for Planetary Sciences, Northwestern University, 1850 Campus Drive, Evanston, Illinois 60208, USA 2Center for Radiophysics and Space Research, Cornell University, Ithaca, New York 14850, USA 3Department of Astronomy, Cornell University, Ithaca, New York 14850, USA 4The John Hopkins University Applied Physics Laboratory, 11100 John Hopkins Road, Laurel, Maryland 20723, USA 5Hawaii Instit...
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ژورنال
عنوان ژورنال: Icarus
سال: 2022
ISSN: ['0019-1035', '1090-2643']
DOI: https://doi.org/10.1016/j.icarus.2022.114939