<P> The following table sets out some examples from the Solar System . Figures are given rounded to three significant figures . The term primary--secondary is used to distinguish between involved participants; with the larger called "the primary", and the smaller called "the secondary". </P> <Ul> <Li> m is the mass of the primary in Earth masses (M) </Li> <Li> m is the mass of the secondary in Earth masses (M) </Li> <Li> a (km) is the average orbital distance between the two bodies </Li> <Li> r (km) is the distance from the center of the primary to the barycenter </Li> <Li> R (km) is the radius the primary </Li> <Li> r / R a value less than one means the barycenter lies inside the primary </Li> </Ul> <Li> m is the mass of the primary in Earth masses (M) </Li> <Li> m is the mass of the secondary in Earth masses (M) </Li>

How far is the center of mass of the pluto-charon system from the center of pluto