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Peanut-shaped near-Earth asteroid imaged by radar

  1. Aug 3, 2015 #1
    Why is the brightest part of the asteroid radar image below the upper edges?




    Is it a software effect? I would naively think that the greatest radar intensity would be reflected from the parts of the asteroid nearly perpendicular to our view. A Google image search shows a similar trend.

  2. jcsd
  3. Aug 3, 2015 #2


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    Well, for starters, the radar emitter and receiver are in different locations.
  4. Aug 3, 2015 #3
    Right, but at the distance to the asteroid, the angle formed by the emitter, reflector, and absorber is nearly zero?
  5. Aug 3, 2015 #4


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    Yeah. It was a reach. :biggrin:

    I'll bet that we are seeing solar EM radiation in the radar range.
  6. Aug 4, 2015 #5


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    Looks more like a dumbbell then a peanut :biggrin: and well could it be due to something like a Doppler shift?

    Edit: Nevermind I don't think it would make much sense since the radar emitter is the one emitting the rays, not the asteroid... right? Unless the asteroid is emitting radiation as well.
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