The Observed-minus-Calculated diagram shows a stability of a period being analyzed. In case of binary system, any nonlinear O − C variation indicates an orbital period variation that can be caused by e.g., mass loss or mass transfer between components (physical change), additional component(s) to the system (apparent change only). Baran et al. reported a sinusoidal variation of the O − C of 2M 1938+4603 and interpreted it as a circumbinary planet. We analyzed the newest and most reliable release of the Kepler data of 2M 1938+4603 and by using our newest approach we removed two main sources that could cause the variation not to be intrinsic to 2M 1938+4603. We removed significant signal not associated with binarity and folded eclipses to increase their cadences. Consequently, we lowered rms of the O − C diagram by a factor of six confirming the sinusoidal variation reported by Baran et al. and making it even more convincing now.

观察到的负计算图显示了正在分析的周期的稳定性。在二元系统的情况下，任何非线性的O  -  C变化都表示轨道周期变化，这可能是由例如质量损失或组件之间的质量转移（物理变化），系统的其他组件（仅表观变化）引起的。Baran等。报告了O  -  C的正弦变化2M 1938 + 4603的结果，并将其解释为外行星。我们分析了2M 1938 + 4603的开普勒数据的最新，最可靠的发布，并且通过使用我们的最新方法，我们删除了可能导致该变化不是2M 1938 + 4603固有的两个主要来源。我们删除了与二元性无关的重要信号，并折叠了日食以增加其节奏。因此，我们降低的均方根ø  -  Ç由六个的确认正弦变化的因子图报道巴兰等。并使其更具说服力。