Initial orbital solution for Ter5ap depicted. The left plot shows the line of sight acceleration as a function of orbital phase (which is in turn a function of the mean anomaly). The red line indicates the orbital solution model and the blue dots are data points. Note that the error bars on the data points are smaller than the marking symbol size. All points have a negative acceleration given that the pulsar spends very little time near periastron (roughly a day out of a 21.3 day orbital period). There are no positive acceleration data points which would better constrain the orbital solution. This is further demonstrated by showing the plot on the right depicting acceleration v/s the observed spin period. One data point clearly does not obey this initial solution.