V965 Cephei revisited: evidence for a binary system
Maksym Pyatnytskyy

TL;DR
This study revises the understanding of V965 Cephei's period behavior, suggesting it may be part of a binary system with a possible second body influencing its orbital period.
Contribution
The paper provides an updated $O-C$ diagram for V965 Cephei, indicating a potential binary system through periodic variations in the orbital period.
Findings
The $O-C$ diagram shows non-uniform period changes.
The near-parabolic $O-C$ feature may be part of a periodic curve.
Estimated $B-V$ index at maximum and minimum brightness.
Abstract
We extended the diagram for V965 Cep with all currently available observations in the Johnson V filter and added unfiltered ones. The new, up-to-date diagram shows that the seeming period change previously revealed by the author does not occur uniformly. Instead, the near-parabolic part of the diagram can be a part of a periodic curve. This could be a sign of the second body in the system. Based on our observations, we also estimated the index of the star to be at maximum brightness and at minimum brightness.
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