Comparison of feature sizes on the surface of the asteroid 4 Vesta determined using ground-based and space observations |
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Authors: | V V Prokofieva-Mikhailovskaia A N Rublevskii |
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Institution: | 1. Crimean Astrophysical Observatory, Scientific Research Institute, Ministry of Education and Science, Youth and Sports, Nauchnyi, Autonomous Republic of Crimea, 98409, Ukraine
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Abstract: | Vesta’s crater sizes that are based on images returned from the Dawn probe orbiting the asteroid 4 Vesta are compared with sizes of spots on its surface derived from hydrosilicate equivalent widths and asteroid color indices B-V and V-R observed spectrophotometrically on earth using a spectral-frequency method. The sizes of craters and spots at the asteroid poles prove to correspond to the sizes of spots that are assumed to be located at latitudes of 40°...45° N and S. Comparative results for the crater sizes ranging from 10 to 100 km are tabulated. We conclude that crater sizes on asteroid surfaces can be determined using the spectral-frequency method. |
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