  The catalogue of protoplanetary nebulae by Vickers et al. has been
supplemented with the line-of-sight velocities and proper motions of their
central stars from the literature. Based on an exponential density
distribution, we have estimated the vertical scale height from objects with an
age less than 3 Gyr belonging to the Galactic thin disk (luminosities higher
than 5000 Lo) to be h=146+/-15 pc, while from a sample of older objects
(luminosities lower than 5000 Lo) it is h=568+/-42 pc. We have produced a list
of 147 nebulae in which there are only the line-of-sight velocities for 55
nebulae, only the proper motions for 25 nebulae, and both line-of-sight
velocities and proper motions for 67 nebulae. Based on this kinematic sample,
we have estimated the Galactic rotation parameters and the residual velocity
dispersions of protoplanetary nebulae as a function of their age. We have
established that there is a good correlation between the kinematic properties
of nebulae and their separation in luminosity proposed by Vickers. Most of the
nebulae are shown to be involved in the Galactic rotation, with the circular
rotation velocity at the solar distance being V_0=227+/-23 km/s. The following
principal semiaxes of the residual velocity dispersion ellipsoid have been
found: (sigma1, sigma2, sigma3) = (47, 41, 29) km/s from a sample of young
protoplanetary nebulae (with luminosities higher than 5000 Lo), (sigma1,
sigma2, sigma3) = (50, 38, 28) km/s from a sample of older protoplanetary
nebulae (with luminosities of 4000 Lo or 3500 Lo), and (sigma1, sigma_2,
sigma3) = (91, 49, 36) km/s from a sample of halo nebulae (with luminosities of
1700 Lo).
