http://www.lns.cornell.edu/~seb/celestia/jt.zip
and
http://www.lns.cornell.edu/~seb/celestia/jt2.zip
The first has the orbital elements as recently measured. Since the standard version of Celestia doesn't implement gravity, they wander away from the Lagrange points over time.
In the second set, I've specified the orbital periods and SemiMajorAxes to be the same as for Jupiter. As a result, they stay synchronized with the planet, although they can be seen to circulate around the Lagrange points.
There are about 1500 Jovian Trojans listed, about 2/3 of them around the L4 point. With "asteroid labels" turned on, Celestia does amazingly well at tracking them all. 1.2.5pre3 manages a framerate of 10fps on my system (500MHz P3, Ti4200)
I used this viewpoint in favorites.cel:
"JupiterTrojans" {
isFolder false
parentFolder ""
base [ 0.00342874536205472 0.000127772298453734 0.0001125048822679046 ]
offset [ 1.4210854715202e-013 1.055253974480142e-015 2.807920996411584e-015 ]
axis [ 0.553147 -0.81826 -0.156456 ]
angle 1.10703
time 2486377.330968768
selection "#0"
coordsys "ecliptical"
}
