
Figure 1:
Two dimensionnal plot of the residuals in position angle
() and os the relative residuals in separation
(). For couples with known orbit, each measurement
corresponds to a point in the graph. Error bars in and
have been drawn to scale. For points with large residuals,
corresponding star names are given (in the case of BU 524, ^{1} refers to the orbit
of 1980 while ^{2} refers to our orbit) 