Revisiting the proposed circumbinary multiplanet system NSVS 14256825

In this work, we carry out an analysis of the observed times of primary and secondary eclipses of the post-common envelope binary NSVS 14256825. Recently, Almeida, Jablonski and Rodrigues proposed that two circumbinary companions orbit this short-period eclipsing binary, in order to explain observed variations in the timing of mutual eclipses between the two binary components. Using a standard weighted least-squares minimization technique, we have extensively explored the topology of χ² parameter space of a single planet model. We find the data set to be insufficient to reliably constrain a one-companion model. Various models, each with similar statistical significance, result in substantially different orbital architectures for the additional companion. No evidence is seen for a second companion of planetary nature. We suspect insufficient coverage (baseline) of timing data causing the best-fitting parameters to be unconstrained.