Technology & Science

SpaceX Slashes Orbits of 4,400 Starlink Sats After 200-m China Near-Miss

In January 2026 SpaceX said it will lower about 40 % of its Starlink fleet from 550 km to 480 km during 2026, a move triggered by a 10 Dec 2025 200-metre brush with a newly launched Chinese Earth-imaging satellite and mounting evidence that LEO collision margins have evaporated.

By Priya Castellano

Focusing Facts

  1. 1 Jan 2026: SpaceX VP Michael Nicolls confirmed a year-long maneuver plan to drop 4,400 Starlink satellites—roughly 40 % of the 9,500-unit constellation—down 70 km to 480 km.
  2. 10 Dec 2025: Starlink-6079 (56120) and Chinese satellite 2025-292A passed within 200 m, with first public ephemeris released only 14 minutes before conjunction.
  3. A 2025 arXiv study pegs the CRASH Clock at 2.8 days—down from 121 days in 2018—if avoidance commands are lost, giving a 30 % chance of debris-creating collision in just 24 h.

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