Table 2: The remaining orbital elements i and $\Omega $ for HD 38529 and HD 168443, as obtained from our astrometric fit using the Hipparcos Intermediate Astrometric Data. Corrections to the standard five astrometric parameters in Hipparcos, derived from the same fit, are also given, as well as the derived companion masses based on our best fit inclinations.
  HD 38529c  HD 168443c

Inclination i [$^\circ$]		 160  150
$\quad$ uncertainty in $\chi ^2$ fit +7 / -23  +8 / -20
$\quad$ uncertainty due to RV elements $\pm$7  $\pm$0.5
Ascending Node $\Omega $ [$^\circ$] 52  19
$\quad$ uncertainty in $\chi ^2$ fit +24 / -23  +21 / -24
$\quad$ uncertainty due to RV elements $\pm$17  $\pm$7
$\Delta \alpha$ [mas] -0.05  0.69
$\Delta \delta$ [mas] -0.46  -0.56
$\Delta \pi$ [mas] -1.81  0.67
$\Delta \mu_{\alpha*}$ [mas yr-1] 2.14  -0.80
$\Delta \mu_{\delta}$ [mas yr-1] 1.32  -1.04

m2 [ $M_{\rm Jup}$]		 37  34
  +36 / -19  $\pm$12

reduced $\chi ^2$ (our fit)		 1.57  0.99
reduced $\chi ^2$ (Hipparcos Catalogue) 1.75a  1.16
F test probability [%] 18  14
a For better comparison with our result, the given $\chi ^2$ value corresponds to the
5 parameter solution in Hipparcos including all available abscissae.

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