Local Standard of Rest
The motion of the sun relative to a hypothetical circular orbit about the center of the galaxy. The local standard of rest is approximately 16.5 km s-1 in the direction of the , .
Local Standard of Rest
(a) LSR -- An imaginary point, located at the Sun's distance from the Galactic center, that revolves clockwise around the Galaxy on a circular orbit.
Relative to the local standard of rest, our Sun and the Earth are moving at about 43,000 miles per hour (70,000 km/hr) roughly in the direction of the bright star Vega in the constellation of Lyra.
(a) Velocity with respect to the Local Standard of Rest. [H76]
(b) A deviation in the velocity of a galaxy from that expected on the basis of a uniform expansion of the Universe. (See Hubble law) [LB90]
Pencil Beam ...
The solar apex, or the Apex of the Sun's Way, refers to the direction that the Sun travels with respect to the Local Standard of Rest.
The velocity of a star with respect to the local standard of rest.
penumbra - (n.) ...
The tendency of a population of stars to have a mean rotation velocity around the galactic center that lags behind that of the local standard of rest.
 See also: Sun, Orbit, Velocity, Galaxy, Milky Way
  
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