\begin{tikzpicture}
            \tkzDefPoint(0,0){0}
            \tkzDefPoint(2,0){A}
            \tkzDefPoint(-2,0){B}
            \tkzDefPoint(230:.5){p}
            \tkzDefPoint(30:.6){q}
            \tkzDefPoint(145:2){ca}
            \tkzDefPoint(325:2){c}
            \tkzDefPoint(60:2){da}
            \tkzDefPoint(240:2){d}
            \tkzDrawCircle[solid,color=brown](0,A)
            \tkzLabelPoints(p,q,c)
            \tkzLabelPoints[below](d)
            \draw[dashed,thick,->-=.6] (p) parabola (c);
            \draw[dashed,thick,->-=.3] (ca) parabola (d);
            \draw[dashed,thick,->-=.3] (da) parabola (q);
            \draw (ca) node[above]{$c_a$};
            \draw (da) node[above]{$d_a$};
            \draw[thick,->](89:2)--(90:2);
            \draw[thick,->](269:2)--(270:2);
            \tkzDrawPoints[size=8,fill=red](p,q)
            \tkzDrawPoints[size=6](A,B)
\end{tikzpicture}