Is there a definition for Orbit(al) Factor?
This is shown in the World Builder's Handbook ( pg. 64; 3b ), but there is no explanation on what the numbers represent. I have looked in various spots but so far can nothing really that delves into the subject too much. It looks so much like the results of a formula that it has piqued my curiosity.
Is there a unofficial or official definition for Orbit(al) Factor?