Table 1: Formal function decribing the pulse period during the outburst. The reference for the third order polinomial fit is MJD 53 618. From MJD 53 629 the period is essentially constant.
  MJD MJD
  53 608.70-53 613.02 53 613.11-53 629
$P({\rm s}\xspace)$ 103.3960(5) 103.3883(5)
$\dot{P}({\rm s~s^{-1}}\xspace)$ - $(-1.69~\pm{0.04})~\times10^{-8}$
$\ddot{P}({\rm s~s^{-2}})$ - $(9~\pm{3})~\times10^{-15}$
${\rm d}^{3}P/{\rm d}t^{3}({\rm s~s^{-3}})$ - $(2.5\pm{0.9})\times10^{-20}$


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