Discovery and Kinematic Verification of SA-1: A 10 Jupiter-mass Substellar Companion at 1,006 AU

Archival mid-infrared photometry and microarcsecond astrometry confirming the existence of a 10 Jupiter-mass ultra-cool Y-dwarf (SA-1) at 1,006 AU. Dataset includes NEOWISE/WISE detections demonstrating a 208.65-arcsecond seasonal parallax reflex, and Gaia DR3 witness star signatures confirming 5.11 mas of astrometric excess noise within a 126.2 mas Einstein Ring radius. This repository corrects previous positional misidentifications at Dec -24.43 and formally anchors the primary mass to RA 245.8945, Dec -24.5484.