text: from ephem import *
  
  YEARS      = 10000.0       # Time interval over which to compute position shift
  
  #================================================
  #
  #       Solar parameters
  #
  
  # Standard solar peculiar motion parms
  U_std_sol  = 10.27
  V_std_sol  = 15.32
  W_std_sol  = 7.77
  # Hipparcos solar peculiar motion parms
  U_hip_sol  = 10.0
  V_hip_sol  = 5.25
  W_hip_sol  = 7.17
  # Rotation speed of LSR (IAU) value. In Reid (2009b) pecular motion of HMSFR is independant of Theta_0
  Theta_0    = 240
  R_0        = 8.34
  #================================================
  #================================================
  