apex_from_constants

kerrgeopy.constants.apex_from_constants(a, E, L, Q)

Computes the orbital parameters \((a,p,e,x)\) for a stable bound orbit with the given constants of motion

Parameters:

• a (double) – spin parameter

• E (double) – dimensionless energy

• L (double) – dimensionless angular momentum

• Q (double) – dimensionless Carter constant

Returns:

tuple of orbital parameters \((a,p,e,x)\)

Return type:

tuple(double,double,double,double)