**Table 1:** Position of Achernar B relative to Achernar A.
Epoch	$\lambda$ ( $\mu$ m)	$\Delta \alpha$ ^a	$\sigma(\alpha)$	$\Delta \delta$ ^a	$\sigma(\delta)$	R_p^b
2006.760^c	11.25	-184.0	7.5	211.0	7.5	12.3
2007.488	2.17	-95.9	6.6	178.6	6.6	8.9
2007.824	2.17	-46.9	6.6	165.8	6.6	7.6
2007.975	2.17	-35.3	6.6	148.2	6.6	6.7

^a Differential coordinates and uncertainties in milliarcseconds (mas).
^b Projected A-B separation in AU.
^c From Kervella & Domiciano de Souza (2007).

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