Derivation of the Gravitational Constant and the Photogravitational Ratio from Single-Star Observables

This work identifies a simple but fundamental ratio:

Φ = L / (M · a)

It reveals an intrinsic balance between radiative output and gravitational strength across stellar bodies.  

While the derivation is purely algebraic, the resulting consistency in computed values of G, across stars of various types, suggests a deeper structural invariant.

Rather than inventing a theory, this model uncovers a hidden order in well-known physical quantities, unifying radiation and gravity through a measurable, dimensionless ratio.