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Fig. 2.

image

Relative orbit of Albireo Ac (wrt Albireo Aa) according to Roberts & Mason (2018), including line of nodes (dash-dotted line), focal-point location (cross) and observations used for the orbit solution. Symbols and orientation are as in Fig. 1. This plot differs from the original figure of Williams et al. (2018) solely by the addition of the Scardia et al. (2008) orbit for comparison (dashed ellipse).

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