Near-Solar-Circle Method for Determination of the Galactic Constants
  We propose a method to determine the galactic constants R_0 (distance to the Galactic Center) and V_0 (rotation velocity of the Sun) from measurements of distances, radial velocities and proper motions of objects near the solar circle. This is a modification of the solar-circle method to a more practical observational method. We apply the method to determine R_0 using data from the literature with known distances and radial velocities, and obtain R_0 = 7.54 +/- 0.77 kpc. 
Y. Sofue, T. Nagayama, M. Matsui, and A. Nakagawa
astro-ph.GA