File:Radialgeschwindigkeit.gif · Wikimedia Commons · See Wikimedia Commons
radial velocity
Sign in to saveAlso known as radial speed, line-of-sight velocity
component of the velocity in radial direction
In the Vinony graph
Within Vinony's link graph, radial velocity is referenced by 7,776 other articles, and connects out to exotic star, binary star and giant star.
Vinony files it under Astrometry, Concepts in astronomy and Orbits.
Its subject is documented across 46 Wikipedia language editions.
Wikidata facts
- Subclass of
- speed
- Image
- PolarVelocities.png
Show 1 more fact
- Commons category
- Spectroscopic radial velocity
Sources (3)
via Wikidata · CC0
~11 min read
Encyclopedic overview
A plane flying past a radar station: the plane's velocity vector (red) is the sum of the radial velocity (green) and the tangential velocity (blue).
The radial velocity or line-of-sight velocity of a target with respect to an observer is the rate of change of the vector displacement between the two points. It is formulated as the vector projection of the target-observer relative velocity onto the relative direction or line-of-sight (LOS) connecting the two points.
Excerpted from Wikipedia’s “radial velocity” article, available under the CC BY-SA 4.0 licence.