This is my equation for the observable Universe mass, based upon the Cosmic Energy Inventory (CEI) parameters and the Hubble Space Telescope (HST) parameters in (SI) units. Universe observable parameters: Universe total observable radius: [math]R_u = 4.408 \cdot 10^{26} \; \text{m} \; \; \; (46.6 \cdot 10^{9} \; \text{ly})[/math] CEI stellar Baryon density: [math]\Omega_s = 0.00205[/math] HST observable stellar number: [math]N_s = 10^{22}[/math] Solar mass: [math]M_{\odot} = 1.989 \cdot 10^