Period ratios P_short/P_long of each object. Here P_short is defined as the shortest period of A and B, and P_long as the longest period of A and B. The vertical lines indicate where potential harmonics would fall. We note that integer multiple harmonics were removed in the object search. However, noninteger harmonics were not removed. Here we see that most objects do not fall on any of the harmonics lines indicating that there does not seem to be any particular correlation between the periods.