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- W1993850175 abstract "Abstract A photometric model of (433) Eros at wavelengths from 450 to 1050 nm is constructed using the combination of the images from the multispectral imager (MSI) obtained during the one-year long orbital phase of the NEAR mission, ground-based lightcurves from earlier observations, and our theoretical forward modeling simulations coupled with the NEAR shape model. The single scattering albedo is found to be 0.33 ± 0.03 at 550 nm, which is smaller than past findings by 30%. The amplitude and width of the opposition effect are 1.4 ± 0.1 and 0.010 ± 0.004 from ground based lightcurves. It is confirmed that the asymmetry factor of the single-particle phase function and the surface roughness parameter do not depend on wavelength from 450 to 1050 nm, and their values are estimated to be − 0.25 ± 0.02 and 28 ° ± 3 ° , respectively, comparable with the earlier measurements from the NEAR NIS data. The geometric albedo and the Bond albedo at 550 nm are calculated to be 0.23 and 0.093, respectively, which make Eros less reflective than previous models, but still slightly more reflective than average S-type asteroids. The lower albedos of Eros are more consistent with our forward modeling simulations, as well as with its spectrum. Eros is a typical S-type asteroid like (951) Gaspra and (243) Ida, and has similar surface regolith properties. Combining the single-scattering albedo with the olivine composition of ordinary chondrites, taking into account space weathering darkening, we constrain the grain size of the regolith particles on Eros to a range of 50 to 100 μm." @default.
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- W1993850175 date "2004-12-01" @default.
- W1993850175 modified "2023-09-26" @default.
- W1993850175 title "Photometric analysis of Eros from NEAR data" @default.
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- W1993850175 doi "https://doi.org/10.1016/j.icarus.2004.07.024" @default.
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