Linked from

The 36 pages that link to Proper motion, each with the reason it gives.

• RedshiftCompared with: It measures transverse motion, unlike redshift’s sensitivity to motion along the line of sight.

• Doppler effectCompared with: Unlike Doppler measurements, it tracks motion across the line of sight.

• ParallaxCompared with: It is actual transverse stellar motion, unlike parallax’s viewpoint-driven apparent shift.

• Stellar parallaxCompared with: It accumulates over years, unlike the repeating displacement caused by Earth’s orbit.

• Peculiar velocityCompared with: It is a projected observational motion, whereas peculiar velocity is a three-dimensional velocity relative to expansion.

• Radial velocityCompared with: It measures transverse motion, unlike radial velocity along the line of sight.

• Doppler spectroscopyCompared with: Proper motion captures transverse movement that a Doppler shift alone cannot measure.

• OrbitCompared with: It describes a star’s projected motion rather than a path bound by another body's gravity.

• Orbital migrationCompared with: It describes a body's motion through space, not a change in its orbit around another body.

• Stellar orbitCompared with: It is an observed component of stellar motion, not by itself a complete orbit.