The objects are about 500 miles up in the sky, potentially thousands of miles from the sensors looking at them, and traveling at 15,000 miles per hour with resp

The objects are about 500 miles up in the sky, potentially thousands of miles from the sensors looking at them, and traveling at 15,000 miles per hour with respect to us. Think about how precise your measurements would need to be to accurately predict the objects' positions in 24 hours to the nearest foot! And that's the difficulty with the simplifying (and wrong) assumption that that outside forces don't alter the orbit- even 2021, we have a lot of room for improvement when it comes to predicting many of the other factors that come into play, like solar activity and the Earth's climate.