Two disks of young stars have recently been discovered in the Galactic Center .
The disks are rotating in the gravitational field of the central black hole at radii r \sim 0.1 - 0.3 pc and thus open a new opportunity to measure the central mass .
We find that the observed motion of stars in the clockwise disk implies M = ( 4.3 \pm 0.5 ) \times 10 ^ { 6 } M _ { \odot } for the fiducial distance to the Galactic Center R _ { 0 } = 8 kpc and derive the scaling of M with R _ { 0 } .
As a tool for our estimate we use orbital roulette , a recently developed method .
The method reconstructs the three-dimensional orbits of the disk stars and checks the randomness of their orbital phases .
We also estimate the three-dimensional positions and orbital eccentricities of the clockwise-disk stars .