
Satellite image issued by Iran of the E-3. Turns out no, Iran did not manage to hit a taxing aircraft. Rather USAF have decided to park the plane on the taxi way near the end of the runway. They probably did it both to make room for other aircrafts in the big open area and so the E-3 can take off first if situation arises.
But on the other hand that means Iran's own reconnaissance satellites, although not the most advanced nevertheless had enough resolution for them to positively identify and target the high value target.