Standard gravitational parameter (source code)

= Standard gravitational parameter
{title2=$\mu$}
{wiki}

= Gravitational parameter
{synonym}

The product $\mu=GM$ of the <gravitational constant> and a central <mass>. In the exact relative <two-body problem>, the central parameter is $G(M_1+M_2)$. The appropriate conservative parameter can change when inverse-square <radiation pressure> is included in a dust <Kepler orbit>.