Projection of the 6D space of 5 001 VCs of C/1988 B1 onto six chosen planes of osculating orbital elements. Vertical axes given in the right-hand panels are exactly the same as the vertical axes in the left-hand panels. Each grey point represents a single virtual orbit, while the large red point represents the nominal orbit solution given here and the green point is taken from MWC 08 (see also Table 6). Each plot is centred on the nominal values of the respective pair of osculating orbital elements denoted by the subscript “0”; see also Table 6.