China's lunar probe Change-2 launch successful

• China's lunar probe Chang'e-2 was successfully launched.
• Chang'e-2 arrived at an Earth-Moon transfer orbit after it separated from the carrier rocket, which has a perigee of 200 km and an apogee of about 380,000 km from the earth
• The lunar satellite is expected to take about 112 hours, or almost five days, to arrive at its lunar orbit.
• Unlike Chang'e I, Chang'e II would be directly carried to the lunar orbit by rocket, so a large amount of fuel would be left after its mission, enabling it to do more work.

Tasks assigned

The first was staying in the lunar orbit, continuing to transfer data back to the Earth for further research before eventually landing on the Moon as an experiment for future lunar probes. In the second scenario, it would leave the Earth-Moon system, flying into outer space to test China's capability to probe further into space.

The third would be a "homecoming," altering its orbit to become an earth orbiter.

The lunar probe will test key technologies and collect data for future landings of Chang'e III and Chang'e IV, and provide high-resolution photographs of the landing area.

Chang'e II was built as an alternative to Chang'e I, which was launched in October 2007 and maintained a 16-month lunar orbit. The series of Chang'e probes is named after a legendary Chinese Moon goddess.