Question

1. We know that most of the mass (>99%) of the solar system is in the Sun. Is this consistent with the masses you calculated in the first table, and the solar system rotation curve? Explain your answer.

Planet	Distance from Sun (AU)	Orbital Velocity (km/s)	Mass inside orbit = v2r/887 (solar masses)
Mercury	0.4	47.4	1.013195
Venus	0.7	35.0	0.966741
Earth	1.0	29.8	1.001172
Mars	1.5	24.1	0.982204
Jupiter	5.2	13.1	1.006056
Saturn	9.6	9.7	1.018335
Uranus	19.2	6.8	1.000910
Neptune	30.1	5.4	0.989533

Answer 1

Yes, within a limit of 2% the calculated mass (Mass inside orbit) is consistent .As the distance from solar center (Sun) increase the orbital speed should decrease.

Force equation => Gravitational pull balancing centrifugal force.

V ^2/R = G M/R^2 ,

Which gives Mass distribution M(R) = V^2*R/G ( which should be constant as Sun has a share of over 99.8%).

( Comparison to rotation curve of spiral galaxies this will be different as there is no evidence of "dark matter" in solar system)