What relationship exists between an object's distance and its apparent shift due to parallax?

Answer

The greater the distance, the smaller the apparent shift.

The core principle states that the farther away an object is from the observer, the smaller the apparent shift in its position will be relative to a very distant reference point, given a fixed change in viewpoint.

What relationship exists between an object's distance and its apparent shift due to parallax?
physicsastronomyopticsparallax