Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

B Earth-Sun Lagrange Points Distance Query

  1. Jun 17, 2017 #1

    Does anyone know what the straight line distances of L4 and L5 are from Earth?

    Many thanks.
  2. jcsd
  3. Jun 17, 2017 #2


    User Avatar
    Science Advisor
    Gold Member

  4. Jun 17, 2017 #3


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    To which L4 and L5 points are you referring to? The Earth-Moon pair or the Sun-Earth pair?
    In each case, the chosen Lagrange point and the two celestial bodies form an equilateral triangle.
    So in the Earth-Moon case, the Earth-Lagrange point distance is equal to the Moon-Earth distance, and the the Sun-Earth case, it is equal to the Sun-Earth distance.
  5. Jun 19, 2017 #4
    Yes, a quick twirl with a compass and a drawn circle soon showed the error of my ways. This is probably the silliest question I've raised on the forum thus far. I promise to do better next time.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted