Jacobi tidal radius
= Jacobi tidal radius
{c}
For a low-mass satellite of mass $M_s$ on a circular orbit of radius $r_o$ in a spherical host,
$$
r_t=r_o\left[
\frac{M_s}{(3-d\log M_h/d\log r_o)M_h(r_o)}
\right]^{1/3}.
$$
This local approximation requires $r_t\ll r_o$.