about distance

hi, could you pls. help explain the pose output：position and orientation.
 is the position means real distance ?

pose: 
  position: 
    x: -0.7781473994255066
    y: -0.21098142862319946
    z: 0.8552718758583069
  orientation: 
    x: -0.3901138536836507
    y: 0.6870443043743111
    z: -0.5281226612457122
    w: 0.3112358585858271

thanks so much!