Korean satellite and space junk "pass by" no collision danger

December 21, 2019

Yonhap News Agency reported that South Korea's Future Creation Science Department and Korea Science and Technology Institute (KAIST) said on the 4th that the space garbage track predicted to collide with South Korea's "Science and Technology Satellite No. 3" has changed, and there is no danger of collision. The closest distance between the two will be about 10 kilometers.

According to reports, KAIST said that the United States Joint Space Operations Center (JSPoC) reported on the evening of the 3rd that "Science and Technology Satellite No. 3" has been separated from the danger of colliding with space debris. This means that the distance between satellite and space junk is longer than 1 km.

According to the analysis conducted by the Korea Aerospace Research Institute, "Science and Technology Satellite No. 3" and space junk may pass through the site predicted to be a collision at 9:31 pm local time on the 4th. The time difference is more than 1 second. Calculated according to space debris at a speed of 8 kilometers per second, its closest distance to "Science and Technology Satellite 3" is more than 10 kilometers.

According to the report, the space junk that was predicted to collide with "Science and Technology Satellite No. 3" was when the US "Iridium 33" satellite and the Russian "Cosmos 2251" satellite collided over 790 km in February 2009. The resulting satellite debris. These wrecks are widely dispersed in space and pose a threat to the normal operation of satellites.

It is reported that South Korea’s first satellite equipped with an infrared camera for space observation, Science and Technology Satellite No. 3 (STSAT-3), was launched at 1:10 pm (local time) on November 21, 2013. The satellite orbits the Earth every 97 minutes at an altitude of 600 kilometers, and returns information about the Milky Way and the early days of the universe. The satellite will also report infrared imagery in various areas of the peninsula, including seawater temperatures near the nuclear power plant, mountain fires, land pollution, crop distribution, and peninsula disaster conditions. The satellite will end its mission in November this year.

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