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Analysis of the Iridium 33-Cosmos 2251 Collision

Analysis of the Iridium 33-Cosmos 2251 Collision. T.S. Kelso. Overview. Introduction Anatomy of a Collision Tracking a Collision Impact on the Space Environment Conclusions. Introduction. What: Collision of Iridium 33 & Cosmos 2251 When: 2009 Feb 10 @ 1656 UTC

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Analysis of the Iridium 33-Cosmos 2251 Collision

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  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 10 @ 1656 UTC • Where: 72.505 N, 97.873 E, 788.6 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

  5. Relative Velocities

  6. Kevin Fetter Video: Iridium 33 & 28

  7. Gabbard Plot: Iridium 33

  8. Gabbard Plot: Cosmos 2251

  9. Tracking a Collision

  10. SOCRATES Min Range

  11. SOCRATES Rank (All)

  12. SOCRATES Rank (Top 200)

  13. Impact on the Space Environment

  14. Debris Characteristics

  15. Lifetime Analysis: Iridium 33

  16. Lifetime Analysis: Cosmos 2251

  17. Lifetime Analysis: Iridium 33

  18. Lifetime Analysis: Cosmos 2251

  19. 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

  20. Questions?

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