  This paper presents an investigation of an old age open cluster King 11 using
Gaia's Early Data Release 3 (EDR3) data. Considering the stars with membership
probability ($P_{\mu}$) $> 90\%$, we identified 676 most probable cluster
members within the cluster's limiting radius. The mean proper motion (PM) for
King 11 is determined as: $\mu_{x}=-3.391\pm0.006$ and $\mu_{y}=-0.660\pm0.004$
mas yr$^{-1}$. The blue straggler stars (BSS) of King 11 show a centrally
concentrated radial distribution. The values of limiting radius, age, and
distance are determined as 18.51 arcmin, 3.63$\pm$0.42 Gyr and $3.33\pm0.15$
kpc, respectively. The cluster's apex coordinates ($A=267.84^{\circ} \pm
1.01^{\circ}$, $D=-27.48^{\circ} \pm 1.03^{\circ}$) are determined using the
apex diagram (AD) method and verified using the ($\mu_U$,$\mu_T$) diagram. We
also obtained the orbit that the cluster follows in the Galaxy and estimated
its tentative birthplace in the disk. The resulting spatial velocity of King 11
is 60.2 $\pm$ 2.16 km s$^{-1}$. A significant oscillation along the
$Z$-coordinate up to 0.556$\pm$0.022~kpc is determined.
