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radial velocity

British  

noun

  1. the component of the velocity of an object, esp a celestial body, directed along a line from the observer to the object

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Spectroscopy also allowed the team to measure the object's radial velocity, which describes its motion toward or away from the observer.

From Science Daily Jul. 23, 2026

The four exoplanets, known as the sub-Earth exoplanets, were discovered using the radial velocity technique by the MAROON-X instrument.

From Space Scoop Apr. 23, 2025

One of the four sub-Earth exoplanets discovered is the least massive world ever found using the radial velocity technique.

From Space Scoop Apr. 23, 2025

For the most recent study, the researchers joined TTV data with a radial velocity analysis of the star.

From Science Daily Jan. 26, 2024

Not only the grosser facts concerning radial velocity, but variations in it so small as a mile, or less, per second, have been recorded and interpreted in terms of deep meaning.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" by Various

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