Congruent number elliptic curve ($E_D:D{y}^2=x^3-x$)

For a positive square-free integer $D$, rational points on $E_D:D{y}^2=x^3-x$ with $2P\ne O$ correspond to rational right triangles of area $D$. The point $(x,y)$ gives side lengths

For $E_5:5y^2=x^3-x$,The torsion points are $O,(0,0),(1,0),(-1,0)$, and one generator of the free part is $(-4/5,6/25)$.