\begin{figure}[htb]
	\centering

\begin{tikzpicture}
	

\draw[-latex] (-4,-2) -- (3,-2) node[below] {$x$};
\draw[-latex] (-4 ,-2) -- (-4,2) node[left] {$y$};
\draw (0,0) ellipse (2.42cm and 1cm);

\coordinate[] (A) at (0,0) ;
\coordinate[] (B) at (1.49,0.79) ;

\draw[fill=black] (A) circle (0.05) node[below] {};
\draw[fill=black] (B) circle (0.05) node[below] {};

\coordinate[] (Y1) at (-4.1, 0.79);
\coordinate[] (Y2) at (-4.1, 0);

\coordinate[] (X1) at (0, -2.1);
\coordinate[] (X2) at (1.49, -2.1);


\draw[thin, dashed] (Y1) node[left] {$y$} -- (B) ;
\draw[thin, dashed] (Y2) node[left] {$y_m$} -- (A) node[left] {};

\draw[-latex](A) -- (B);

\draw[thin, dashed](X1) node[yshift=-4] {$x_m$} -- (A);
\draw[thin, dashed](X2) node[yshift=-4] {$x$} -- (B);

\coordinate[] (ETA1) at (0,-0.5);
\coordinate[] (ETA2) at (1.49,-0.5);

\draw[-latex, thick] (0,0) -- (3,0) node[below] {$\eta$};

\draw[latex-latex] (ETA1) -- (ETA2) node[midway,below] {$\eta$};

\draw[-latex, thick] (0,0) -- (0,1.5) node[above] {$\xi$};

\coordinate[] (XI1) at (-1,0);
\coordinate[] (XI2) at (-1,0.79);

\draw[latex-latex] (XI1) -- (XI2) node[left,midway] {$\xi$};


	
\end{tikzpicture}
\caption{Ellipse mit Mittelpunkt $M\left(x_{m}, y_{m}\right)$}
\end{figure}