Typically there are several worlds at a similarish distance, which can make it hard even for me to predict. I know the exact algorithm, and on most maps I guess right only around 30% of the time. Even then, the tough part is actually getting over there.
But, there are some changes planned for the homeworld placement logic, eRa brought up some suggestions about it a while back (that the two should never be together), and then this from liq3, are making it so that I'm planning on some changes.