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Analysis of the Iridium 33-Cosmos 2251 Collision

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Presentation on theme: "Analysis of the Iridium 33-Cosmos 2251 Collision"— Presentation transcript:

1 Analysis of the Iridium 33-Cosmos 2251 Collision
T.S. Kelso

2 Overview Introduction Anatomy of a Collision Tracking a Collision
Impact on the Space Environment Conclusions

3 Introduction What: Collision of Iridium 33 & Cosmos 2251
When: 2009 Feb 1656 UTC Where: N, E, km altitude Northern Siberia Results (as of 2009 Aug 5): 386 pieces of Iridium 33 debris (16 decayed) 927 pieces of Cosmos 2251 debris (30 decayed)

4 Anatomy of a Collision

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14 Relative Velocities

15 Kevin Fetter Video: Iridium 33 & 28

16 Gabbard Plot: Iridium 33

17 Gabbard Plot: Cosmos 2251

18 Tracking a Collision

19 SOCRATES Min Range

20 SOCRATES Rank (All)

21 SOCRATES Rank (Top 200)

22 Impact on the Space Environment

23 Debris Characteristics
Satellite Number of Pieces Total Volume (m3) Dry Mass (kg) Inclination (deg) Iridium 33 386 3.388 556 86 Cosmos 2251 927 7.841 900 74

24 Lifetime Analysis: Iridium 33

25 Lifetime Analysis: Cosmos 2251

26 Lifetime Analysis: Iridium 33

27 Lifetime Analysis: Cosmos 2251

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29 Conclusions Collision has significant long-term adverse effects
International community must continue to work to mitigate debris generation Can mitigate risk by collaboratively sharing SSA SOCRATES-GEO: 11 operators, 150 satellites SOCRATES-LEO: 6 operators, 106 satellites Need best available SSA from SSN Need full examination of this event to help chart the way ahead

30 Questions?


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