4. The period of Jupiters moon lo is 1.5 x 10's and has a radius of orbit of 4.2 x 108 m calculate the mass of Jupiter using this information (1.9 x 1027 kg) 5. A lunar lander is to be placed in orbit around the Moon at an altitude of 100km What will its period of orbit be? (7.09 103 s) 6. A spy satellite must stay in orbit over a specific part of Earth therefore there period of orbit must match the Earth's period of rotation. This type of satellite is known as a geo-synchronous satellite. a) What altitude would this satellite be placed at? (3.6 x 107 m) b) How fast would the satellite move? (3070 m/s) Determine the the orbital speed for the Hubble telescope if it orbits Earth at an altitude of 600 km. How fast would it travel if it was just above Earth's surface? a) 7559 mis b) 7906 m/s