5 σ contrast obtained from the NACO L’ data taken in 2013. The separation and predicted contrast from the orbit fitting is marked with a blue cross. At this separation, the corresponding limit is 10.3 mag. Despite the close correspondence between the predicted contrast and the 5 σ limits, we do not unambiguously detect the companion. The final reduced image is also shown, after removing 150 PCA modes. Thepredicted position for the 2013 epoch is shown with a yellow circle. While the contrast curve has been corrected for companion self-subtraction introduced by the PCA procedure, the image has not. Through injection of fake companions, we estimate a 35% flux loss for objects at the predicted separation of HD 4113 C.