  ok , thats fine , I can calculate the positions with this , however calculating the initial velocities gives some more problems while two big masses are involved and thus the sun is not fixed ...Any chance to get the excel-table with the initial velocities ?  ok , thats fine , I can calculate the positions with this , however calculating the initial velocities gives some more problems while two big masses are involved and thus the sun is not fixed ...Any chance to get the excel-table with the initial velocities ?  