\begin{table}%t1 %\centering \par \caption{\label{table1}{\it XMM}-Newton X-ray eclipse of HT-Cas: result of the piecewise fit (see text for details).} \begin{tabular}{lc} \hline\hline Quantity & Value \\ \hline First X-ray eclipse (day) & MJD (JD $-2~400~000.5$)\\ & $52~506.479~21~\pm~ 0.000~03$ \\ \hline Ingress phase $\phi_1$ (cycles) & $-0.0266\pm 0.0005$ \\ Ingress phase $\phi_2$ (cycles) & $-0.0189\pm 0.0012$ \\ Egress phase $\phi_3$ (cycles) & $ 0.0207\pm 0.0005$ \\ Egress phase $\phi_4$ (cycles) & $0.0284\pm 0.0012$ \\ & \\ Ingress $\Delta \phi_{1,2}$ (cycles) & $0.0077\pm 0.0017$ \\ Egress $\Delta \phi_{3,4}$ (cycles) & $0.0077\pm 0.0017$ \\ & \\ Ingress $\Delta t_{1,2}$ (s) & $49.2\pm 9.9$ \\ Egress $\Delta t_{3,4}$ (s) & $49.2\pm 9.9$ \\ \hline Mid ingress $\phi_i$ (cycles) & $-0.0226\pm 0.0007$ \\ Mid egress $\phi_{\rm e}$ (cycles) & $0.0244\pm 0.0007$ \\ & \\ Eclipse $\Delta \phi_X$ (cycles) & $0.0469\pm 0.0014$ \\ & \\ Eclipse $\Delta t_X$ (s) & $298.9\pm 8.9$ \\ \hline Mid-eclipse rate (counts s$^{-1}$) & $0.01 \pm 0.02$ \\ Out-of-eclipse rate (counts s$^{-1}$) & $0.56 \pm 0.05$ \\ \hline \end{tabular} \end{table}