The orbital period of the moon is 27.3 d, the average center-to-center distance center distance between the moon and earth is 3.82 * 10^8m, the length of an Earth year 365.25d, and the average center to center distance between earth and the sun is 1.50 x 10^11m. Use this data to estimate the ratio of the mass of the Sun to the mass of Earth. Compare this estimation to the measured ratio of 3.33 x 10^5. List some neglected factors that might account for any discrepancy.

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