On Fri, 10 Apr 2015 14:56:56 -0700 (PDT), Andre
wrote:

I wonder if there are software that would calculate the rate of precession as you move through time, forward and backward. For instance, in about 12 000 years, Vega will be the north star. Are there software that would determine accurately the movements of all stars.

Essentially all planetarium apps calculate precession and use it for
plotting the sky in the past and future. Keep in mind that the values
used for long time scales are approximations, and not very good ones.
Accurate calculations of precession beyond a couple thousand years in
either direction don't exist.