Re: Sky People's solar system

        Thank you all for all your answers. I've realized that "delay" wasn't the
good word. That's what happens when you don't know an expression in a
foreign language and try to guess. The fact is that the French word "dur=E9e=
"
is extremely difficult to translate in English. What I meant with planet's
revolution delay (now I realize it was a bit awkward (sp?)) was the time of
a revolution around the sun for that planet, or the year for that planet. I
know there is a relation between the average radius of an orbit and the
time of revolution around the sun with this orbit, but I forgot it. I know
also that you can't place planets wherever you want (I think the average
radii of the orbits in our solar system follows a series of numbers that I
don't remember (but I remember having seen it!)) and I want to make my
solar system as "natural" as possible. So I need the average radii of the
planets' orbits, and the corresponding time of revolution. If anyone knows
the relation...

        I know I can find them in RPG's, but I have no way to look at them, so...
Is there a URL I can look at?

        As far as I've designed the solar system, it has:

- a sun (only ne) that is just a bit hotter than ours, so habitablme
planets must be a little farther than our Earth from the sun.

- 13 planets (in fact 14 as there is a double one) and 2 asteroid belts
which are placed, from the nearest to the farthest from the sun:

        - the smallest planet of the system, even smaller than our Mercury. It's
so near to the sun that it is totally invisible at eyes' sight;

        - a double planet, the bigger the size of Mars, the smaller just slightly
smaller. No atmosphere (to close to the sun), but visible.

        - a planet as big as Earth, with no moon. In the habitable zone but too
hotter to have life. The biggest volcanic activity of the solar system
(makes it inhabitable).

        - the planet of the Sky People, slightly bigger and denser than Earth
(just enough to have a gravity of 1.1 instead of 1). Exactly in the midddle
of the habitable zone, so farther to its sun than Earth to its (it will
make a year of 450 Earth days or so I think). 2 moons, one smaller than the
Moon, the other bigger. I want them to be placed to have the same apparent
radius as the sun (to have more possibilities of eclipses (sp?)) and I need
their time of revolution around the planet to make a "small month" and a
"big month" (for the Sky People's calendar). If anyone can help...

        - the first asteroid belt, with the biggest asteroids (some of the size of
the moons of the planet of the Sky People).

        - a Neptune-like (or Uranus-like) gas giant planet. A dozen of moons. A
very small ring.

        - a kind of hybrid, to big to be a rock planet, to small to be a gas
giant. A kind of very big rock planet with a very thick atmosphere. A
fourth as big as the Neptune-like planet. five moons.

        - a gas giant with very thick rings, a little bigger than Saturn.
Something like 30 moons.

        - the biggest planet of the system, a tenth bigger than Jupiter. 23 moons
and a strange system of _two_ perpendicular rings, an equatorial ring and a
polar one. As strange as it appears, the polar ring is stable. The last
visible planet of the system.

        - the second asteroid belt, with much smaller asteroids (due to both
planets surrounding the belt).

        - another gas Neptune-like gas giant, 10 moons.

        - a solitary little rock and icy planet, maybe an ex-moon of the next
planet (very possible as its orbit cuts the orbit of this planet). It has a
small volcanic activity, hence a light atmosphere. No moon.

        - another gas giant, bigger than Neptune, with small rings. 9 moons or so.

        - another rock and icy planet the size of Earth. No atmosphere. One moon
the size of the Moon.

        - the last planet of the system, a Neptune-like gas giant with only two
moons.

        As you can see, my solar system is already well defined. I need only to
find the average radii of the orbits and the time of revolution for each
planet (and the ones for the two moons of the Sky People's planet). That's
why I need your help. Does anyone know at least those parameters for our
own solar system (I'll extrapolate from it)?

        Thank you by advance.


                                                        Christophe Grandsire
                                                |Sela Jemufan Atlinan C.G.

"Reality is just another point of view."

homepage : http://www.bde.espci.fr/homepage/Christophe.Grandsire/index.html