Kinematic Local Standard of Rest

The Kinematic Local Standard of Rest or LSRK is an astronomical reference frame designed to represent the mean motion of material in the solar neighborhood first described by Gordon (1975). Conceptually, in the LSRK frame, the average motion of the stars in the solar neighborhood is zero¹. By convention, the Sun moves relative to LSRK at towards , .

Footnotes

1. In practice, the observed average motion is different for different spectral types, which has historically justified using convenient rounded values for the solar motion relative to the LSR. ↩