w.astro.berkeley.eduw.astro.berkeley.edu/~mikewong/G481/G481-0730-4up.pdf—338,151 minor planets...
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w.astro.berkeley.eduw.astro.berkeley.edu/~mikewong/G481/G481-0730-4up.pdf—338,151 minor planets known (on July 18 2006) ... Mission planned to explore Ceres and 4 Vesta called DAWN