I want to write these equations using the \begin{equation} , however can't align them to the left side and want to put only one reference number for them
\begin{equation}
\begin{split}
S=-\frac{1}{2}\rho v \delta \left(\frac{\ mu}{pF}\right)^{1/2} e \sin{\theta} \\
T = -\frac{1}{2}\rho v \delta \left(\frac{\mu}{pF}\right)^{1/2} \left( 1+e \cos{\theta}- r\alpha \left(\frac{p}{\mu}\right)^{1/2} \cos{i} \right)
\end{split}
\end{equation}
but i want to align my equations like in the following picture
help me thanks :)