tangential motion

noun

: proper motion of a star corrected for the effect of distance and expressed in linear units usually kilometers per second and being that component of the star's motion with respect to the solar system that is at right angles to the line of sight

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“Tangential motion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tangential%20motion. Accessed 30 Nov. 2024.

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