Corner plot showing the constraints on the inclination angle and component masses from PK parameters and the χ² mapping of DDGR solutions. Central plots: mass–mass diagrams portraying the DDH PK parameters constraints, with each color corresponding to a different parameter as indicated in the legend (solid lines: nominal value, dashed lines: 1σ limits), and the 1σ limits from DDGR χ² mapping in black. The shaded grey area on the right plot represents the region excluded by the mass function (i > 90), while the shaded areas on the left plot represent the areas outside the prior for M_p (outside of 0.6 < M_p < 1.5 M_⊙). The explored regions of the M_p and M_c were decided based on the limits given by the mass function and M_t (from ). Outer plots: marginalised one-dimensional probability densities for M_p, M_c and cos i from DDGR χ² mapping, showcasing the median value (black solid line) and the 31.4%, 47.4% and 49.9% percentiles on both sides (shaded areas). The resulting mass constraints are consistent with a pair of NSs.