How long is Chang e 2 flying? What is the mission? 5

Launch time. October 1, 2010 18:59:57 (most accurate).

Running time. Sun Huixian, deputy chief designer of the lunar exploration project, revealed to **: "In fact, Chang'e-2 is a backup star for Chang'e-1.

Sun Hui first revealed that when Chang'e-1 was launched, two satellites were prepared to ensure the success of the flight around the moon. "If Chang'e-1 does not achieve the original goal, it may launch this backup satellite, Chang'e-1 mission has been successfully completed, and this satellite will become the pilot star of the second phase of China's lunar exploration project. Sun Hui first revealed that as the pilot star of Chang'e-3, the mission of Chang'e-2 will last for half a year.

The main task. The main mission of Chang'e-2 is to obtain clearer and more detailed image data of the lunar surface and the surface data of the lunar polar region, so the CCD camera on board the Chang'e-2 satellite will have a higher resolution, and other detection equipment will also be improved. Some key technical tests were carried out for Chang'e-3 to achieve a soft landing on the moon, and high-precision imaging of the Chang'e-3 landing area was carried out.

Launch the target. Further exploration of the distribution of elements on the lunar surface, the thickness of lunar soil, and the space environment of the Earth and the Moon.

Ten missions. Experimental Mission).

1. Cooperate with the launch vehicle to verify the direct launch technology of the Earth-Moon transfer orbit;

2. Verify the lunar orbit acquisition technology for near-moon braking at a distance of 100 kilometers from the lunar surface;

3. Verification of 100 km and 15 km orbit maneuvering and flight technology;

4. Carry out high-resolution imaging tests on the alternative landing areas of the second phase of the project;

5. Equipped with a light and miniaturized X-band deep space transponder, and cooperate with China's new X-band ground TT&C station to test X-band TT&C technology;

6. Test the low-density parity check code (LDPC) coding technology of telemetry channel, the high-speed data transmission technology of the moon and the ground and the landing camera technology;

7. Obtain high-precision three-dimensional images of the lunar surface, and the resolution of the Chang'e-1 satellite will be improved from 120 meters to better than 10 meters;

8. Exploration of the composition of lunar materials;

9. Detection of lunar soil characteristics;

10. Exploration of the Earth-Moon and near-Moon space environments.

Chang'e-5 returned to Earth on December 17, 2020.

The Chang'e-5 mission is to collect dust and debris in unexplored areas of the moon's front and return them to Earth to facilitate the analysis of the moon's evolutionary history.

The Chang'e-5 sample could fill an important gap in scientists' understanding of the moon's volcanic activity. The material from the Moon could also help researchers more accurately date the surfaces of planets such as Earth, Mars and Mercury. According to the method of calculating craters, the Moon is also an important reference for dating other planets.

November 24th.

Departure" - the Chang'e-5 probe was launched from the Wenchang Cosmodrome in China and entered the Earth-Moon transfer orbit.

December 1.

Arriving at the destination" - Chang'e-5 landed and carried out sampling work in a pre-selected area on the front side of the moon.

December 2nd.

Picked up" - Chang'e-5 successfully completed automatic sampling on the lunar surface and saved the samples in the storage device carried by the ascender.

December 3rd.

The ascender ignites and takes off, and enters the orbit accurately.

December 6th.

Loaded" - Chang'e-5 completed the rendezvous and docking with the orbiter and returner assembly and the transfer of samples.

December 17th.

Delivered" - Chang'e-5 returns to Earth.

On October 1, 2010, Chang'e-2 was launched from the Xichang Satellite Launch Center.

Chang'e-2 is the second artificial satellite around the moon in China's lunar exploration program, and is also the technical pilot star of the second phase of China's lunar exploration program.

On October 1, 2010, Chang'e-2 was launched from the Xichang Satellite Launch Center. On October 6, 2010, Chang'e-2 was captured by the Moon and entered orbit around the Moon. On December 15, 2012, the Chang'e-2 project was announced.

Mission Objectives:

1. Obtain three-dimensional images of the lunar surface, with a resolution of better than 10 meters, which provides a basis for the optimization of subsequent landing areas, and at the same time provides raw data for dividing the fine structure, faults and annular structures of geomorphological units on the lunar surface.

2. Detect the material composition of the moon, detect the content and distribution characteristics of silicon, magnesium, aluminum, calcium, titanium, potassium, thorium, uranium and other elements on the lunar surface, and obtain the element distribution map with higher spatial resolution and detection accuracy.

Chang'e-2 was successfully launched at 18:59:57 on October 1, 2010 at the Xichang Satellite Launch Center.

October 1, 2010 18:59:57.345 milliseconds.

It was launched at 18:59:57 and 345 milliseconds on October 1. Launched at Xichang Satellite Launch Center.

On December 13, 195 days after the Chang'e-2 satellite left the Sun-Earth Lagrange L2:195, it successfully flew into deep space about 7 million kilometers away from the earth, and at a relative speed of kilometers and seconds, it passed by the international number 4179 Asteroid Toutatis from far and near, realizing China's first flyby exploration of an asteroid. At the rendezvous, the Chang'e-2 spaceborne surveillance camera carried out optical imaging of the asteroid, which was the first time in the world to achieve a close detection of the asteroid.

will fly farther into deep space.

Expected to fly as far as Jupiter's orbit, Chang'e-2 is likely to have a long lifespan, and the onboard equipment may still be effective after reaching its farthest point, after which it will fly inwards into the solar system under the Sun's gravitational pull and orbit the Sun in an elliptical orbit.

It was launched at 18:59:57 on October 1, 2010 at Xichang Satellite Launch Center.

October 1, 2010 18:59:57

seconds 345 milliseconds in Xichang.