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A NASA's Ephemerides

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  1. Jun 1, 2018 #1
    I was wondering, how does NASA actually calculate their super exact Ephemerides?
     
  2. jcsd
  3. Jun 1, 2018 #2

    phyzguy

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    Science Advisor

    The Horizons site you linked has detailed documentation online. Have you looked at it? What part of it is unclear?
     
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