Proper Motion Measurements

Proper motion measurements refer to the observed change in a star's position on the sky over time, as seen from Earth. By tracking a star's exact location across many years, astronomers can determine how quickly and in what direction it moves through space. This movement helps us understand the star's velocity and trajectory relative to our solar system. Proper motion is especially useful for studying the motion of stars within our galaxy, revealing information about stellar dynamics, distances, and the structure of the Milky Way.