How many satellites are there in the sky in China?

From April 24th, 1970, when China successfully launched its first satellite, to June 24th, 2005, China launched 59 satellites.

The eight planets * * * have 59 satellites. Except Mercury and Venus, all the other planets are surrounded by satellites. According to the number of satellites, the ranking order is Saturn/KOOC-0/8, Uranus/KOOC-0/7, Jupiter/KOOC-0/6, Neptune 8, Mars 2 and Earth/KOOC-0/. The size and quality of different satellites vary greatly. There are seven satellites with a radius greater than 1000km, and the moon is one of them.

Sputnik is a prosperous family. According to the purpose, it can be divided into three categories: scientific satellites, technical experimental satellites and applied satellites.

Scientific satellites are satellites used for scientific exploration and research, mainly including space physics exploration satellites and astronomical satellites. They are used to study the atmosphere, radiation belt, magnetosphere, cosmic rays and solar radiation of a planet and to observe other stars. At present, most of the artificial satellites in the world are artificial earth satellites, and there are also artificial satellites such as Mars satellites.

19571On October 4th, the former Soviet Union successfully launched the world's first artificial earth satellite.

Subsequently, the United States, France and Japan successively launched artificial earth satellites.

1On April 24th, 970, the first artificial earth satellite "Dongfanghong-1" designed and manufactured by China was successfully launched by the Long March-1 carrier rocket.

The orbit of the satellite is 439 kilometers from the nearest point of the earth and 2384 kilometers from the farthest point. The angle between the orbital plane and the equatorial plane of the earth is 68.5 degrees, and it takes 1 14 minutes to circle the earth. The satellite weighs 173 kg and plays the music of Dongfanghong at a frequency of 20009 megacycles.

Extended data:

Beidou navigation satellite

"Beidou Navigation Test Satellite" was developed by China Association for Science and Technology, and the first generation satellite navigation and positioning system-"Beidou Navigation System" will be established by itself.

Beidou Navigation System is a regional navigation system that provides all-weather and all-weather satellite navigation information. After the system is completed, it will mainly provide navigation services for highway transportation, railway transportation, offshore operations and other fields, and will play a positive role in promoting China's national economic construction. The first successful launch of Beidou Navigation Test Satellite laid the foundation for the construction of Beidou Navigation System.

The launch of Beidou Navigation Test Satellite uses the Long March 3A carrier rocket. This launch is the 63rd flight of China Long March series launch vehicles.

Zhongxing 22

"Zhongxing-22" is a practical geosynchronous communication satellite and the follow-up star of "Dongfanghong-3". The satellite, with a mass of 2.3 tons and a designed service life of 8 years, is mainly used for ground communication services and operated by China Communication Broadcasting Satellite Company.

It is understood that after the satellite enters the transfer orbit, it will be fixed above the equator at 98 degrees east longitude under the tracking control of the An Satellite Measurement and Control Center and the space ocean survey ship.

Baidu encyclopedia-satellite