This paper presents the discovery of two universal constants of the Solar System — HC1 (2.058 AU) and HC2 (2.322 AU) — designated the Hasan Constants. These constants are derived from the gravitational fulcrum of the nine-planet system (7.522 AU) and the orbital positions of Jupiter and Saturn. HC1 is Saturn's distance from the fulcrum; HC2 is Jupiter's distance from the fulcrum. Using only HC1, HC2, and Pi, the orbital distances of all nine classical planets, Ceres, eight Kuiper Belt Objects, Sedna, and the trans-Neptunian object Leleakuhonua (2015 TG387, semi-major axis 1080 AU, aphelion 2712 AU) are derived with errors consistently below 3%. Pi emerges independently three times from the Jupiter-Saturn boundary through three separate methods: geometric (Jupiter - HC1 = 3.142), mass-radius ratio of planetary groups (3.140), and thermal emission ratio (3.143). Seven testable predictions for undiscovered solar system objects are recorded with date stamp March 2026. Highest search priority: 81.3 AU, 84.0 AU, and 91.7 AU in the anti-Sun direction. These zones are currently unoccupied by any confirmed named object.