Unverified60% confidenceEventExact time
The accidental collision between Iridium 33 and the defunct Russian satellite Cosmos-2251 in 2009 produced more than 2,000 trackable debris fragments in a single event.
2
Sources
60%
Confidence
Long-term
Relevance
7/6/2026
First Seen
Sources
The 100,000-Satellite Limit: Why Astronomers Are Drawing a Line in Earth's Orbit
hackernewshackernews7/4/2026
Related Claims
Unverified2009年2月商业铱星Iridium 33与俄罗斯废弃军事卫星Kosmos 2251在西伯利亚上空约790km处以约11.7km/s相对速度相撞，产生超过2000块可追踪碎片79% similarUnverifiedChina's 2007 anti-satellite weapon test destroyed the Fengyun-1C weather satellite, producing more than 3,000 trackable debris fragments in a single event, which remains the largest single source of orbital debris increase to this day.65% similar
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