Decrease in orbital period for a pulsar in a 1-d orbit with a 0.3   M_⊙ companion and a transverse velocity of 100 km  s^-1. The green curve shows the contribution from gravitational wave damping, while the blue curve is drawn for different time spans of observations, namely 5, 10, and 15 yr, respectively. We assume weekly observations, and a 10 ns TOA uncertainty that increases quadratically with distance to account for the decreasing flux density.