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Fig. A.2

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Proper motion diagrams (PMD) for separation and position angle change from absolute astrometric measurements of RX J0919.4-7738 B relative to the centroid of Aa & Ab (top, left to right) and from absolute astrometric measurements of RX J0919.4-7738 Aa relative to RX J0919.4-7738 Ab (bottom, left to right). See text for more information.

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