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Absolute photometry of small main-belt binary asteroids. Physical properties
Chiorny, Vasilij G. et al., 2025, Planetary and Space Science, 262, 106118 | View on ADS (2025P&SS..26206118C)
Abstract
Here we present the physical characteristics of 24 discovered and 2 probable small binary asteroids at the inner main belt based on photometric lightcurves of the primary components of these systems obtained in the standard VR spectral bands, as well as the determination of the V–R color indices and the absolute magnitudes HV of the studied objects. We also make estimates of the effective diameters of six asteroids which radiometric data are not available. Analysis of the V–R color indices, revised albedo, color indices obtained from the SDSS and Sky-Mapper surveys, as well as recently published spectral characteristics in the visible and infrared wavelength ranges, allows us to effectively make a taxonomy of the observed asteroids. We have determined that the most of these primary components of the main-belt small binary asteroids belong to the moderate-albedo S-type with the mean albedo 0.24 ± 0.08. Also, there are moderate-albedo asteroids of the A, M, Q, and V-types as well as high-albedo E-type in our sample. It should be noted that asteroids with low albedo are absent in our set of binary asteroids.
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