#### Fascinating. What a remarkable star-system.

Two binaries - I'll bet the maths of that system is interesting. How do they model it in the mathematical sense? Do the first consider the relationships "within" each pair as if they were two independent binaries and then consider each pair as one object which is then in a binary relationship with the other pair? Or can they model/calculate all the relationships between each of the four simultaneously? Anyone in a position to contribute to my education?