The “degeneracy factor” κ of the astrometric solution for simulated experiments observing stars over the full 360° hour angle range. In all cases 20 stars, equispaced across a given declination range, were observed. Different lines correspond to different upper limits δ_max to the declination range as indicated in the legend, and the x-coordinate corresponds to the lower limit δ_min of the range used. In all simulations a single baseline with equal polar and equatorial components was used.