  A simple model of the nucleus of M31 based on {\it HST} images and ground
based spectroscopy is used to investigate the properties of the double nucleus
in M31. The model reproduces the general properties observed in the nucleus of
M31. In particular, it produces symmetric rotation curves, and shifts of the
velocity dispersion peak in the sense observed. Within the constraints of the
model, the brightest point in the $V$ band in the nucleus is confirmed to be
physically near to the dynamical center of M31 and not seen in projection along
the line of sight. The velocity and velocity dispersion of this object can be
constrained. This implies that P2 is colliding with M31 and likely to be in the
process of being tidally disrupted.
