View Single Post
Antigo 17-01-08, 15:57   #2 (permalink)
Luis França Luis França está online
Cumulonimbus
Luis França is an unknown quantity at this point
 
Avatar de Luis França
 
Mensagens: 1,505
Registo: May 2006
Local: Lisboa
Default Re: Asteróides, cometas e afins - 2008

Deadly asteroid may hit Mars soon



The asteroid, known simply as 2007 WD5, was discovered in the constellation Taurus on November 20, 19 days after passing near the Earth at an apparent magnitude of +20. That is about 400,000 times fainter than most people can see with the naked eye on a dark night.

Early observations of the asteroid caused excitement amongst the scientific community when it was estimated as having as high as a 1 in 75 chance of colliding with Mars on January 30, 2008. Wikipedia estimated such chances as 1 in 25.

However, by January 9, additional observations allowed NASA's Near Earth Object Program (NEOP) to narrow the field of uncertainty, resulting in only a 1-in-10,000 chance of impact.




Atenção que este asteróide (2007 WD5) não é aquele que a partir de 18 a 30 de Janeiro passa a uma distância Terra-Lua da Terra (2007 TU24).
  Responder com citação