Figure 2

Two-body problem (a) trajectory of the secondary body in relation to the primary body (left), (b) representation of aphelion, perihelion, foci, semi-minor axis and semi-major axis (center), (c) Euler angles diagram (right).

Two-body problem (a) trajectory of the secondary body in relation to the primary body (left), (b) representation of aphelion, perihelion, foci, semi-minor axis and semi-major axis (center), (c) Euler angles diagram (right).