The fundamental physical properties as the Keplerian laws come to light naturally by considering the geometric parameters of a two-body system. Following the Kepler’s conception of assigning a crucial role to distance measurements, and introducing a metric in agreement with the speed of light c, correspondences between physical and geometric parameters of the orbits of the planets are discovered. The orbital eccentricity ε expresses β, the ratio between the relative velocity between the two bodies and the velocity of the interaction signal, the speed of light c in the specific case. The direction of β identifies a virtual axis and two angles, θ ω. The first one is the polar angle of the ellipse, the second one is the scattering angle of a body from the its inertial motion. Thus formulated, the ω parameter is compatible with the experimental observation of the advancement of the perihelion in the Mercury orbit, as well as with the result of the calculation according to the Schwarzschild metric and the relative due approximations. Furthermore, the angle functions are linked by a modulated curve. Formulating the gravitational potential with the elliptic parameters, an expression analogous to retarded Lie ́nard-Wiechert potential is obtained.