The orbital elements provided by universe sandbox seem good for short term things but according to other articles and things i've seen out there I would need more stuff, like the perturbations of different planets, and the precession of the orbits themselves.
i'm sure the information is in universe sandbox, even if it's in a different form, I could probably calculate the necessary numbers from other values like angular velocity and position and stuff, but I am super new to the concept of celestial mechanics and I'm feeling a little lost. I've been working like a dog for the past few days to calculate all kinds of stuff, and I've been doing okay so far! but i didn't expect that long-term predictions with the basic orbital elements would turn out to be increasingly inaccurate. Now it turns out I need all-new numbers, and I'm starting to feel really worn down.
I'm still willing to do all the math, myself, but could someone familiar with the subject please tell me what equations I should be looking for or whatever way there is to extract the information I need from the data universe sandbox provides? I'm really losing it, here!