This paper applies torque balance (Mass × Distance) to the 9-planet solar system using NASA documented mass and distance data. The gravitational balance point of the system is derived as 7.522 AU — between Jupiter and Saturn — not at the Sun.Two findings are presented:First, the gravitational fulcrum of the solar system is located at 7.522 AU, near Jupiter — not at the Sun. Jupiter is simultaneously the 5th planet (numerical midpoint of 9), the largest planet by mass, and the closest planet to the system's gravitational balance point.Second, Pluto is gravitationally essential to solar system torque balance. The inner 5 planets (Mercury to Jupiter) and outer 4 planets (Saturn to Pluto) produce exactly equal torque of 750.928 units each — difference of 0.000. Removing Pluto breaks this balance by 0.064 units. The 2006 IAU reclassification of Pluto was based on size criteria. Gravitational torque role is a separate physical criterion not considered in that classification.All calculations are verified against NASA data. The findings are mathematically falsifiable — any independent recalculation using NASA mass and distance tables will produce the same result.Keywords: solar system, torque balance, Jupiter, Pluto, gravitational fulcrum, center of mass, planetary mechanics
Shadab Hasan (Tue,) studied this question.