Observable

Formula

Parameters needed

to be measured

Constant

needed.

Orbital time

T

T

gravitational acceleration

$g=\frac{4{\pi }^2{R}_2^3}{T^2{R}_1^2}$

R₂, R₁, T

Orbital velocity

$v_o=\frac{2\pi R_2}{T}$

R₂, R₁, T

Light bending

$\delta =\frac{16{\pi }^2{R}_2^3}{T^2{R}_1{c}^2}$

R₂, R₁, T

c

Gravitational redshift

$\delta =\frac{4{\pi }^2{R}_2^3}{T^2{R}_1{c}^2}$

R₂, R₁, T

c

Time dilation

$T_2=T_1\sqrt{1-\frac{8{\pi }^2{R}_2^2}{T^2{c}^2}}$

R₂, R₁

c