Scheeres et al. (2020)「小惑星Bennuの中身どうなってんの」論文 https://t.co/efZhVKS5pi #今日読んだ惑星科学のやつ Bennuを周回するOSIRIS-REx探査機と天体表面から放出された粒子の追跡から、重力場を測定した。
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Gravity fields, density distribution, surface variations... There are a lot of factors to take into account when analyzing asteroids, which is why they often use multiple models. https://t.co/lz2nCypiH8
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"The distribution of a planetary body’s mass is a fundamental physical property that defines its current physical state, which can provide insight into its past, and serves as a geophysical basis for other investigations." https://t.co/IQQG06qk0X
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"Comparisons with a constant-density shape model show that [asteroid] Bennu has a heterogeneous mass distribution." https://t.co/raF8MkQeKi