Let me backpedal a little here as I seem to have plunged forward way
too much, and resulting in speculation
more than a thoughtful pacing forward progress.

Saturn Ring structure is spaced as Saturn then D ring then C ring then
B ring then A ring
where the B is the most dense and the A is second most dense.

Now here we can see a close comparison of the Sun with Mercury Venus
Earth and Mars.

Earth is the most dense and if we say that Saturn and its Rings of D,
C, B, A are to the
Sun as Mercury, Venus, Earth, and Mars.

So in other words, all the underlying mathematics of gravity of Sun,
Mercury Venus Earth and Mars
is the same underlying mathematics of orbital mechanics that Saturn is
with its D, C, B, and A rings.
Where we can say the mathematics of orbital mechanics of gravity for
the B ring of Saturn is the
same mathematics as Earth with the Sun.

The densest rings of Saturn are the rings further away from Saturn.
And the densest planet of the
inner planet is Earth which is almost the furthest away from the Sun
of the inner planets. So there is
alot of qualitative similarity here of Saturns third Ring of B and
Sun's third planet of Earth.

So now, the least dense Ring of Saturn is the F ring beyond the A ring
and the least dense formation
of the Inner Planets to the Sun is the Asteroid belt. So here we can
consider as an analogy that the F ring
of Saturn is to the inner solar system what the asteroid belt is.

Where I think this is going is that the force of gravity pulls
together matter in a region into a Ecliptic Plane.
The Sun and Inner Planets is a single system. Saturn and its Rings is
a single system where the Rings
form this plane. So when I can identify a "single astronomical system"
the force of gravity has a spherical
shaped region center and where the force of gravity places the
remainder of the mass of the system in a
Ecliptic Plane of that system.

Archimedes Plutonium
www.iw.net/~a_plutonium
whole entire Universe is just one big atom
where dots of the electron-dot-cloud are galaxies