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3 questions
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List of J₂ values for solar system bodies beyond the planets; are there any prolates?
J₂ values for the planets can be found in several sources including each planet's planetary fact sheet. Without looking I'm going to assume they are all positive (oblate) because each planet rotates ...
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How do pressure, temperature, and gravity affect a smaller body than Earth with the same bulk composition?
Earth has a density of about ${\rm 5.513 ~g/cm^3}$ with one Earth radius and one $g$. Venus, a very similar planet to Earth and likely with about the same bulk composition, has a density of about ${\...
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How would you relate the respective solar gravitational pulls of two planets?
I was asked this question:
How much weaker is the gravitational pull of the Sun on Neptune at 30 AU, than it is on Earth at 1 AU?
How would I even begin to determine this?
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