25.5: Properties of Solar System Objects

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\[\begin{equation}
\begin{array}{lll}
\text { Symbol } & \text { Value } & \text { Meaning } \\
M_{e} & 5.98 \times 10^{24} \mathrm{~kg} & \text { mass of earth } \\
M_{m} & 7.36 \times 10^{22} \mathrm{~kg} & \text { mass of moon } \\
M_{s} & 1.99 \times 10^{30} \mathrm{~kg} & \text { mass of sun } \\
R_{e} & 6.37 \times 10^{6} \mathrm{~m} & \text { radius of earth } \\
R_{m} & 1.74 \times 10^{6} \mathrm{~m} & \text { radius of moon } \\
R_{s} & 6.96 \times 10^{8} \mathrm{~m} & \text { radius of sun } \\
D_{m} & 3.82 \times 10^{8} \mathrm{~m} & \text { earth-moon distance } \\
D_{s} & 1.50 \times 10^{11} \mathrm{~m} & \text { earth-sun distance } \\
g & 9.81 \mathrm{~m} \mathrm{~s}^{-2} & \text { earth's surface gravity }
\end{array}
\end{equation}\]