Effects of an Asteroid Aerocapture on Earth?
As a follow-up to this question: Could an asteroid aerocapture around Earth?
The answers seem to indicate that it would be possible for such a thing to happen (an asteroid aerocapturing using the Earth's atmosphere, and then getting a gravity assist from the moon to stabilize the orbit), even though it would be very unlikely.
If such a thing did happen, what would it seem like to people on Earth who happen to be watching that part of the sky at that time? Could the asteroid be big enough for this to be noticeable? What about big enough for even laypeople to know something is different about this time?
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