New observations for the times of minimum lights of a well-known apsidal motion star CW Cephei were made using a 0.6 m wide field telescope at Jincheon station of Chungbuk National University Observatory, Korea during the 2015 observational season. We determined new times of minimum lights from these observations and analyzed O-C diagrams together with collected times of minima to study both the apsidal motion and the Light Time Effect (LTE) suggested in the system. The new periods of the apsidal motion and the LTE were calculated as 46.6 and 39.3 years, respectively, which were similar but improved accuracy than earlier ones investigated by Han et al. (2002), Erdem et al. (2004) and Wolf et al. (2006).

1. INTRODUCTION
 2. NEW OBSERVATIONS
 3. MINIMUM LIGHTS AND O-C DIAGRAM
 4. DISCUSSION OF APSIDAL MOTION PERIOD
 ACKNOWLEDGMENTS
 REFERENCES

• Wonyong Han(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea, Department of Astronomy and Space Science, University of Science and Technology, Daejeon 34055, Korea) Corresponding Author
• Min-Ji Jeong(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea, Department of Astronomy and Space Science, Chungbuk National University, Cheongju 28644, Korea)
• Joh-Na Yoon(Department of Astronomy and Space Science, Chungbuk National University, Cheongju 28644, Korea, Chungbuk National University Observatory, Jincheon 27867, Korea)
• Hyoun-Woo Kim(Department of Astronomy and Space Science, Chungbuk National University, Cheongju 28644, Korea)
• Yonggii Kim(Department of Astronomy and Space Science, Chungbuk National University, Cheongju 28644, Korea, Chungbuk National University Observatory, Jincheon 27867, Korea)
• Chun-Hwey Kim(Department of Astronomy and Space Science, Chungbuk National University, Cheongju 28644, Korea, Chungbuk National University Observatory, Jincheon 27867, Korea)