Issue 40

Close Encounter: ASAT Debris & Chinese Satellite

18 Jan 2022: According to China's National Space Debris Monitor Center, space debris No.49863 from Russian Cosmos 1408 LEO ASAT weapons test had a close encounter (perhaps as near as 14.5m) with China's Tsinghua Science Satellite (No.46026). - The small, spherical Tsinghua Science satellite was launched in Aug 2020 on…

18 Jan 2022: According to China’s National Space Debris Monitor Center, space debris No.49863 from Russian Cosmos 1408 LEO ASAT weapons test had a close encounter (perhaps as near as 14.5m) with China’s Tsinghua Science Satellite (No.46026).

– The small, spherical Tsinghua Science satellite was launched in Aug 2020 on a Long March 2D rocket to make atmospheric density and gravitational field measurements. It is in a 478 by 499-km orbit inclined by 97.4 degrees.

– Russia destroyed the roughly 2,000-kg Russian Cosmos-1408 satellite on 15 Nov with a direct-ascent ASAT missile.

– “The test so far has generated more than 1,500 pieces of trackable orbital debris and will likely generate hundreds of thousands of pieces of smaller orbital debris,” the U.S. Space Command Public Affairs Office stated shortly after the ASAT test.

– China’s Foreign Ministry has declined to comment on Russia’s ASAT test…any response would be complicated by China’s 2007 destructive, debris-creating ASAT test. That test created debris that continues to be a hazard for satellites, the ISS, and China’s crewed station.

Close encounter geometry between Cosmos-1408 ASAT debris and the Tsinghua Science Satellite.

Tsinghua Science Satellite.