This is nothing so involved as the actual mechanics of orbit. I'm just curious, is there a preferred plane that satellites orbit in? I ask because on my frequent stargazings, after my eyes are VERY well adjusted to the dark, I can see what I assume to be satellites moving pretty quickly across the sky. Some of them are very faint, and I can only track them by keeping them in that "sweet spot" in my vision slightly off of directly looking at them. The paths they take are mostly north-west. My question stems from the fact that some of them have paths that are at angles to this, such as north-east at about 30 degrees between the two.