Estimating the thermally induced acceleration of the New Horizons spacecraft

Residual accelerations due to thermal effects are estimated through a model of the New Horizons spacecraft and a Monte Carlo simulation. We also discuss and estimate the thermal effects on the attitude of the spacecraft. The work is based on a method previously used for the Pioneer and Cassini probes, which solve the Pioneer anomaly problem. The results indicate that after the encounter with Pluto there is a residual acceleration of the order of 10^-9 m^{/s 2} , and that rotational effects should be difficult, although not impossible, to detect.