\begin{table}%t4 \caption{\label{tab:properties}Synoptic table reporting the main known parameters for IGR~J16358-4724 and IGR~J16393-4643. } \par %\centerline { \begin{tabular}{l cc} \hline \hline \noalign{\smallskip} Parameter & IGR~J16358-4724 & IGR~J16393-4643\\ \hline Spectral type & & \\ of the secondary & K-M III [1]& K-M III [1] \\ $V$-band magnitude & $>$$23.67$ [2] & 21.53 [2]\\ $A_{V}$ (mag) & 12--13 [1] & 4--6 [1] \\ Distance (kpc) & 5--6; 12--13 [3] & $\sim$10 [4] \\ X-ray spectrum & [5] & [4] \\ $L_{\rm X}$ (erg s$^{-1}$) & $3 \times 10^{32}$--$2 \times 20^{36}$ [5] & ${2\times 10^{34}}$ [4,1]\\ $L_{\rm X} / L_{\rm secondary}$ & -- & -- \\ $\dot{M}$ (g s$^{-1}$) & $1.6 \times 10^{12}$--$1.1 \times 10^{16}$ [1] & ${1.1\times10^{14}}$ [1]\\ $P_{\rm spin}$ (s) & 5850 [6] & $\sim$912 [4,7]\\ $\dot{P}_{\rm spin} / P_{\rm spin} $ (s$^{-1}$) & 3.1 $\times 10^{-8}$ [5] & 1.0 $\times 10^{-11}$ ? [7,1]\\ $P_{{\rm orb}}$ (d) & -- & 50.2 ? [7,1]\\ \hline \end{tabular}} \tablefoot{The X-ray luminosity is given in the 2--10 keV band. The mass accretion rate $\dot{M}$ was estimated assuming typical parameters for a neutron star, i.e. $R_{\rm X} = 10$ km and $M_{\rm X} = 1.4$~$M_{\odot}$.}\vspace{-2mm} \tablebib{ [1] this work; [2] Chaty et al. (2008); [3] Lutovinov et al. (2005); [4] Bodaghee at al. (2006); [5] Patel at al. (2007); [6] Patel et al. (2004); [7] Thompson et al. (2006).}\vspace{-3mm} \end{table}