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Thread: Eccentricity to Flattening (oblateness)

  1. #1
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    Eccentricity to Flattening (oblateness)

    I've got a notional figure for the eccentricity of the shape of the oblate planet Beta Pictoris b; (0.369) how do I convert this into flattening (oblateness) for use in Celestia?
    Last edited by eburacum45; 2019-Nov-25 at 10:08 PM. Reason: oblateness not obliquity

  2. #2
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    Jan 2008
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    Put you thread title into google, press enter and select the top result (should be this https://en.wikipedia.org/wiki/Flattening)

  3. #3
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    Quote Originally Posted by eburacum45 View Post
    I've got a notional figure for the eccentricity of the shape of the oblate planet Beta Pictoris b; (0.369) how do I convert this into flattening (obliquity) for use in Celestia?
    Oblateness rather than obliquity, I think.

    f = 1-sqrt(1-e)

    Grant Hutchison

  4. #4
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    Flattening=oblateness. Sorry- I goofed.
    I make that
    0.07057
    Thanks!

  5. #5
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    Here's the planet Beta Pictoris b that I've made, using that calculated oblateness.
    https://orionsarm.com/im_store/betapictorisb1.png

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