is_stable

kerrgeopy.constants.is_stable(a, p, e, x)

Tests whether or not the given orbital parameters define a stable bound orbit

Parameters:

• a (double) – dimensionless spin of the black hole

• p (double) – orbital semi-latus rectum

• e (double) – orbital eccentricity

• x (double) – cosine of the orbital inclination

Return type:

boolean