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Temperature of an astroid between planets

  1. Nov 11, 2013 #1
    1. The problem statement, all variables and given/known data
    What would be the temperature of a spherical asteroid located between mars and jupiter, twice as far from the Sun as Earth? The asteroid has no atmosphere, and its albedo is 0.15




    2. Relevant equations

    the solar constant at venus is a factor of (150/108)^2 larger than at earth

    3. The attempt at a solution
    T = [ Lsun (1-a) / 16 σ π ]^1/4 * 1 / √d

    T = 279 * (1 - 0.15)^1/4 * 1 / √2
    im not sure if i am on the right track
     
  2. jcsd
  3. Nov 11, 2013 #2

    mfb

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    2016 Award

    Staff: Mentor

    I don't see the relevance of the solar constant at venus.

    What is the solar constant at the distance of the asteroid?

    Where does the 279 come from in your last equation?
     
  4. Nov 11, 2013 #3
    the solar constant at venus was given as a hint to the question. the solar constant at the distance of the asteroid is what I am trying to figure out first
     
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