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Parallax is defined as an object appearing as if it is positioned differently when it is looked at from different angles or different positions.
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.he nearest star to the Sun (and thus the star with the largest parallax), Proxima Centauri, has a parallax of 0.7687 Â± 0.0003 arcsec. This angle is approximately that subtended by an object 2 centimeters in diameter located 5.3 kilometers away.