Celestia Forums

My mistake - error for R-K is of the order of h^(R-K level + 1).

I'm using the R-K technique as of yet. It can be reasonably computationally intensive, but like anything you get what you pay for - error is of the order of the R-K level IIRC. I don't know much about the Stoer-Burlisch method, but from what I've heard it's a trapezoid rule with extrapolation, with ...

I'm working on a project that would do generic simulation of unsteady systems - essentially it is works, but I need to package it.

If this is still something you need, I can dop back in later (a month or so) and post the details. I'm going to wait until after my finals to complete it...

At the moment I'm doing a Physics project, and part of it requires data on the positions (ideally in x, y, z co-ords) of planets/the sun at given points in time.

Does anyone know where I could find such data? I've trawled the NASA site, but so far to no avail.

Hi everybody, newbie here. I'm developing a simulator (it started as one of those "wouldn't it be intersting if..." projects :P ) which is in some ways similar to Celestia, although looking at the area from a different aspect (oorbital mechanics, rather than rendering and display). Not a good openin...