radial velocity concept from the Astronomy knowledge base

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radial velocity

subject fact

radial velocity has definition Velocity along the line of sight toward (-) or away from (+) the observer. has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:33:27.0
has definition The speed at which an object moves toward or away from us. It can be measured from a star's spectrum: a star moving toward us has a blueshifted spectrum, and a star moving away from us has a redshifted spectrum. The larger the blueshift or redshift, the larger the radial velocity. The present radial-velocity champion is a star in the constellation Lacerta named Giclas 233-27, which moves toward us at 583 kilometers per second. has source: Croswell, K. 1995 The Alchemy of the Heavens, Anchor Books, 2001-09-27 09:33:27.0
is a kind of velocity

velocity has base unit length per unit time 2001-09-27 09:33:26.0

quantity has unit 2001-09-27 09:33:12.0

number has value 2001-09-27 09:32:57.0

radial velocity	has definition Velocity along the line of sight toward (-) or away from (+) the observer.
	has definition The speed at which an object moves toward or away from us. It can be measured from a star's spectrum: a star moving toward us has a blueshifted spectrum, and a star moving away from us has a redshifted spectrum. The larger the blueshift or redshift, the larger the radial velocity. The present radial-velocity champion is a star in the constellation Lacerta named Giclas 233-27, which moves toward us at 583 kilometers per second.
	is a kind of velocity
velocity	has base unit length per unit time
quantity	has unit
number	has value