Celestia Forums

good days mister consceptor
can you create the " astero?d circle " in plance at mars to jupiter?
and can create the " hoor's could " around the solar system?
thanks
ps: excuse me for wrong syntaxe, but am french and very bad en english

florian
http://multivers.cjb.net

There are already files for the asteroid belt, Jovian Trojans, the Centaurs and the Kuiper belt. They are listed on Mike's web site. http://mikecelestia.bravehost.com/index.htm
There used to be a big asteroid addon with thousands of them, and another version with only those 50 km or larger. But the site it's on is not available anymore, so maybe someone could send it to you.
I have not seen any Oort cloud addon. They have not directly observed it yet.

Brendan

When refering to Asteroids...
Could someone explaine what Centaurs and Trojans are

Centaur- an object like chiron, which has characteristics of both a large asteroid and a comet (releases gas & dust near perihelion). They have orbits with perihelion a bit outside jupiter's orbit, and aphelion near or outside neptune's orbit.

Trojan- object orbiting at the L4 or L5 point of a planet or moon. This means that it's either 60 degrees ahead, or 60 degrees behind an object in it's orbit. These lagrange points are gravitationally stable. (I'm not exactly sure why this is though) If you were to make a triange between the trojan, the planet & the sun, the triangle would be equilateral (if you have a perfectly circular orbit)

Jupiter has hundreds of trojans, mars has a few, and I think the earth might have one or two as well.

JackHiggins wrote:Jupiter has hundreds of trojans, mars has a few ...

And one for Neptune, too:
http://cfa-www.harvard.edu/iau/lists/Ne ... ojans.html

Grant

Jack, you are a vast array of knowledge
Thank you once again

Here's a web page with nice diagrams of the Lagrange points. http://map.gsfc.nasa.gov/m_mm/ob_techorbit1.html

Brendan