China's Earth Resources Satellite, known as ZY-1, which was put into orbit on October 14 last year has completed all its tests and is working normally, according to the launcher, the China Space Technology Institute.

The satellite, weighing 1,540 kilograms, was sent into orbit with a Chinese Long March 4-B rocket at the Taiyuan Launch Center in north China's Shanxi Province.

According to head designer Chen Yiyuan, the satellite, a joint production of China and Brazil, was made to gather information on the environment, agriculture and urban planning through remote sensing images and data transmitted to China, Brazil and other countries.

It will be in space for two years.

The satellite revolves around the Earth 14 times a day and covers the entire surface of the earth in 26 days. So far, it has circled the earth more than 1,600 times.