Fig. 4.
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Sorted distances of objects from the Orion OB1b (blue) and OB1a (grey) associations (Brown et al. 1994). Parallax data were taken from the Gaia DR3 catalogue (Gaia Collaboration 2023). The median values of distance for OB1b and OB1a are (382 ± 1) pc (brown) and (345 ± 1 pc) (black), respectively. The distance of δ Ori C (red), (381 ± 8) pc, is very close to the median distance of the OB1b distribution.
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