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Until 2006, Ceres was the largest asteroid, with a diameter of roughly 600 miles. And it was as spherical as any of the planets. Now it has joined the "dwarf planet" group. So with Ceres' "promotion", that leaves either Vesta or Pall-as as the largest of the asteroids. Both are a bit over 300 miles in diameter. And both are definitely on the irregular side.

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13y ago

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