Assertion: planet's body | /r/CapableOf | form into round shape
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Source sentences:
text: While there is no specific upper or lower bound for the mass of a planet or dwarf planet, a rocky body like an asteroid would be expected to form into a round shape if its diameter exceeds about 800 km, while a less dense icy body would be expected to achieve roundness if its diameter exceeds 400 km or so.