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2009 satellite collision

2009 satellite collision

Feb 13, 2009, 5:58 PM 12

2009 satellite collision

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A replica of an Iridium satellite

The 2009 satellite collision was the first major unintentional collision between two artificial satellites in Earth orbit. The collision occurred at 16:56 UT[1] on February 10, 2009,[2] at 776 kilometres (482 mi) above the Taymyr Peninsula[1] in Siberia.[2][3] The collision speed has been estimated at around 11.6 km/s (26,000 mph).



[edit] Collision

The collision destroyed both the Iridium 33 and Kosmos-2251 satellites, owned by Iridium Satellite LLC and the Russian Space Forces respectively. While the Iridium satellite had been operational up until the collision, the Russian satellite had been out of service for several years.[4] Kosmos-2251 was launched in 1993 and ceased to function two years later. Russia has not commented on claims the satellite was out of control.[5]

U.S. space agency NASA reported that a large amount of debris was produced by the collision. Currently the U.S. Space Surveillance Network tracks more than 500 pieces of debris, but it will take more time to estimate the full extent of the collision debris.[2] NASA says the risk to the International Space Station, which orbits about 430 kilometres (270 mi) below the collision course, is low,[6][7] as is any threat to a shuttle launch planned for later February 2009.[7] However, Chinese scientists have said that the debris does pose a threat to Chinese satellites in Sun-synchronous orbits.[8]

Several smaller collisions had occurred previously, often during rendezvous attempts or the intentional destruction of a satellite, including the DART satellite colliding with MUBLCOM,[9] and three collisions involving the manned Mir space station, during docking attempts by Progress M-24, Progress M-34, and Soyuz TM-17.[10] In 1996, the Cerise satellite collided with space debris.[11]

[edit] Spacecraft

Main articles: Iridium 33 and Kosmos-2251

Kosmos-2251 was a 950-kilogram (2,094 lb)[12]Strela communications satellite. It was launched on a Kosmos-3M carrier rocket on June 16, 1993.[2] It had been deactivated prior to the collision, and remained in orbit as space debris. Iridium 33, a 560-kilogram (1,235 lb) satellite that was part of the Iridium constellation of 66 communications satellites,[2] was launched on September 14, 1997, on a Proton rocket.

[edit] See also

[edit] References

  1. ^ a b Jonathan McDowell. "Orbital Stop Press". http://planet4589.org/space/jsr/latest.html. Retrieved on 2009-02-12.en.wikipedia.org:2009_satellite_collision"> 
  2. ^ a b c d e "U.S. Satellite Destroyed in Space Collision". Space.com. http://www.space.com/news/090211-satellite-collision.html.2Fwww.space.com%2Fnews%2F090211-satellite-collision.html&rfr_id=info:sid/en.wikipedia.org:2009_satellite_collision"> 
  3. ^ "Satellites Collide, Put Space Station at Risk". The Washington Post. February 11, 2009. http://www.washingtonpost.com/wp-dyn/content/article/2009/02/11/AR2009021103387.html.2Fwww.washingtonpost.com%2Fwp-dyn%2Fcontent%2Farticle%2F2009%2F02%2F11%2FAR2009021103387.html&rfr_id=info:sid/en.wikipedia.org:2009_satellite_collision"> 
  4. ^ Wolf, Jim (February 11, 2009). "U.S., Russian satellites collide in space". Reuters. http://www.reuters.com/article/newsMaps/idUSTRE51A8IA20090211.2Fwww.reuters.com%2Farticle%2FnewsMaps%2FidUSTRE51A8IA20090211&rfr_id=info:sid/en.wikipedia.org:2009_satellite_collision"> 
  5. ^ "Russian and US satellites collide". BBC News. 2009-02-12. http://news.bbc.co.uk/2/hi/science/nature/7885051.stm. Retrieved on 2009-02-12. "Russia has not commented on claims the satellite was out of control"en.wikipedia.org:2009_satellite_collision"> 
  6. ^ Dunn, Marcia (February 12, 2009). "Big satellites collide 500 miles over Siberia". The Associated Press. http://www.google.com/hostednews/ap/article/ALeqM5grGfFhzFgjxK46MQHTwD1RgRUwCAD969P1500.2Fwww.google.com%2Fhostednews%2Fap%2Farticle%2FALeqM5grGfFhzFgjxK46MQHTwD1RgRUwCAD969P1500&rfr_id=info:sid/en.wikipedia.org:2009_satellite_collision"> 
  7. ^ a b "Russian and US satellites collide". BBC. 2009-02-12. http://news.bbc.co.uk/2/hi/science/nature/7885051.stm. Retrieved on 2009-02-12.en.wikipedia.org:2009_satellite_collision"> 
  8. ^ "China alert on U.S.-Russian satellite collision". Xinhua. 2009. http://news.xinhuanet.com/english/2009-02/12/content_10809710.htm.2Fnews.xinhuanet.com%2Fenglish%2F2009-02%2F12%2Fcontent_10809710.htm&rfr_id=info:sid/en.wikipedia.org:2009_satellite_collision"> 
  9. ^ DART Mishap Investigation Board Final Report January 4, 2007
  10. ^ Wade, Mark. "Soyuz". Encyclopedia Astronautica. http://www.astronautix.com/lvs/soyuz.htm. Retrieved on 2009-02-12.2Fwww.astronautix.com%2Flvs%2Fsoyuz.htm&rfr_id=info:sid/en.wikipedia.org:2009_satellite_collision"> 
  11. ^ Stern, David (2004). "Is it possible for two orbiting satellites to collide?". NASA. http://www.gsfc.nasa.gov/scienceques2003/20040116.htm.2Fwww.gsfc.nasa.gov%2Fscienceques2003%2F20040116.htm&rfr_id=info:sid/en.wikipedia.org:2009_satellite_collision"> 
  12. ^ "Russian and US satellites collide". BBC. http://news.bbc.co.uk/1/hi/sci/tech/7885051.stm?lss.en.wikipedia.org:2009_satellite_collision"> 

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