2013 ET

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2013 ET是一颗於2013年3月3日发现的近地小行星[1],宽约100米。[2] [3][4][5][6]

2013 ET在世界時2013年3月9日12時09分离地球最近,距離为0.006520天文單位(975,400公里,606,100英里)[7][8]。它亦曾接近火星金星[8]

参考资料[编辑]

  1. ^ MPEC 2013-E14 : 2013 ET. IAU 小行星中心. 2012-03-04 [2012-03-09].  (K13E00T)
  2. ^ Big Asteroid to Zoom By Earth This Weekend, space.com, March 5, 2013
  3. ^ Dr. Lance A. M. Benner. 2013 ET Goldstone Radar Observations Planning. NASA/JPL Asteroid Radar Research. 2013-03-07 [2013-03-09]. 
  4. ^ International Business Times: Another Asteroid '2013 ET' To Pass Earth Saturday
  5. ^ Before It's News: Asteroid 2013 ET to make Earth close approach on March 9, 2013
  6. ^ International Science Time: Asteroid Flyby; Watch Asteroid 2013 ET Buzz By Earth Live Online
  7. ^ Gray, Melissa. Asteroid to fly past Earth this weekend. Light Years. CNN. March 7, 2013. 
  8. ^ 8.0 8.1 JPL Close-Approach Data: (2013 ET). 2013-03-07 last obs (arc=4 days (Radar=5 obs); 不確定性=2) [2013-03-09].