  We present a study of magnetic fields effects on the position resolution and
energy response of hyper-pure germanium detectors. Our results provide
realistic estimates of the potential impact on the resolving power of
tracking-arrays from (fringe) magnetic fields present when operating together
with large spectrometers. By solving the equations of motion for the electron
and holes in the presence of both electric and magnetic fields, we analyzed the
drift trajectories of the charge carriers to determine the deviations in the
positions at the end point of the trajectories, as well as changes in drift
lengths affecting the energy resolution and peak shift due to trapping. Our
results show that the major effect is in the deviation of the transverse (to
the electric field direction) position and suggest that, if no corrective
action is taken in the pulse-shape and tracking data analysis procedures, a
field strength $\gtrsim$ 0.1 T will start to impact the intrinsic position
resolution of 2 mm (RMS). At fields above $\sim$1 T, the degradation of the
energy response becomes observable.
