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But with computers and sky tracking charts shouldn't it be trivial to find new spots in the sky without using parallax? Anything new should be pretty note worthy.

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Not all asteroids are “bright” enough to be imaged from earth, the problem is the low albedo asteroids you cant see, thats why we need this: https://solarsystem.nasa.gov/missions/neo-surveyor/in-depth/

Right. If you can't see them, you can't see them. It's not a parallax problem.

And even that won't see one on a collision course because there is NO Motion to detect when an object is on collision course.

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