Standard Gravitational Parameter - Two bodies orbiting each other

Description

In celestial mechanics, the standard gravitational parameter μ of a celestial body is the product of the gravitational constant G and the mass M of the body.
In the case of two bodies orbiting each other the mass M is the sum of the masses of the two bodies.
For several objects in the solar system, the value of μ is known to greater accuracy than either G or M.

Related formulas

Variables

μstandard gravitational parameter (m3/s2)
GNewtonian constant of gravitation
m1mass of 1st body (kg)
m2mass of 2nd body (kg)