I don't have a clue about what you are talking about. When you look into the night sky you are looking into the past, sometimes billions of years into the past. Nothing is actually where it appears to us now. Some of the stars that you see still shining brightly in the sky burned out ages ago and there are new stars whose light our ancestors won't see for a billion years, if they ever do.
This is a simple concept, why are you struggling so hard with it?
If the sun was 173.5 AU from the Earth, by how many degrees would its apparent position lag behind its actual position? Would these two positions coincide?