↩ 🔵 🔵 🔵 ❪𝛿❫ Astronomical Quantities ○ ❪𝛿’❫⁺ Spectral Fitting Parameters ○ Gravitational Radius (R𝘨≡GM∕c²) ○￩ Spin (a=J∕cM) ○￩ Primary Mass (M₁) ○◂ Secondary Mass (M₂) ○◂