The ICS delta s commutating intervals are derived by an eliptical SOL Galactic Orbit if the arms and central bar are causal to Periods and PER The PTr PER point is at aphelion and the Oligocene and OS is at perihelion Gilman Erlener 704 M period then is close to 714 M but no cigar 2 5 error I wrote to these guys yet to hear from them tho