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We calculate a spin frequency and spin frequency derivative of $1.8734(8) \\times 10^{-3}$ Hz and $6.42(6) \\times 10^{-12}$ Hz/s respectively from the quadratic fit of pulse arrival times. The quadratic fit residuals fit well to a circular orbital model with a period of $15.3(2)$ days and a mass function of about $1.3M_{\\odot}$, but they can also be explained by a torque noise strength of $6.8 \\times 10^{-18}$ Hz sec$^{-2}$. 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