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Fig. 8

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Post-fit residual distributions of Gaia FPR Triton astrometry in the along-scan (AL) direction. Occultation-only orbit-fit solutions using three RUWE selection criteria (no limit, <1.4, <1.0) and the all-data solution are presented. Each panel compares solutions using NEP097 (left) and FORCES-8-MAIN-2024 (F8M24; right) Triton ephemerides. The all-data F8M24-based solution corresponds to our final FORCES-8-BARY-2024 (F8B24) NSB ephemeris.

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