Friendly greek boys

This morning radio four had a program on "friendship" in ancient greece. Its the kind of friendship Gary Glitter is into.

Word of advice for anyone trying to identify small galaxies in SPH simulations: ITS HARD. Every method has its short comings, FOF, subfind, Mesh based methods, Dark Matter substructure. You name its got problems.

Is a system considered a Milky way if its largest satellite is only one magnitude fainter then the central galaxy?