Answer:
diboron trioxide Formula: B 2 O 3 Molecular weight: 69.620 CAS Registry Number: 1303-86-2
Explanation:
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<u><em>hope that helps you</em></u>╰(*°▽°*)╯</h3>
Since it is round and it is the asteroid belt it is most likely that he found a dwarf planet
I believe the best answer to that question wud be D. I cud b wrong