Hubble Telescope Ignited

The altitude of Hubble Telescope is 569 km. We want to send our telescope to the infinity. We've ignited the telescope already and we don't wanna use extra fuel. At what velocity ( in m/s ) we need to shoot the Hubble Telescope?

Radius of earth =6370km

G= $6.673*10^{-11} Nm^2/kg^2$

Mass of earth = $6*10^{24}kg$