Some of the language of the 3rd trumpet is repeated in the 5th trumpet, namely, a star is said to fall from heaven.
In the 5th trumpet, the star is given a key, which he then uses to open the bottomless pit. Not if a meteorite can operate a key, then maybe that star could be a meteorite. But if not, then how can it be a meteorite? And if it can't be a meteorite in the 5th trumpet, why must it be in the 3rd trumpet?
I think the falling of these stars refers to major losses by leaders of armies. That stars are often associated with armies is clear from many passages, since we have the word "host" sometimes referring to stars, and sometimes to armies.
Judges 5:20 They fought from heaven; the stars in their courses fought against Sisera.
So I think we can make a strong biblical case that the stars of the 3rd and 5th trumpets are military leaders or kings leading their armies to battle.