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    Arctic circle
    From: R.H. van Gent
    Date: 2006 Jul 5, 02:29 -0500

    Hi,

    On a truely spherical earth the distance between the North Pole and the
    Arctic Circle is equal to that between the Tropic of Cancer and the equator.

    In reality both distances should be slightly different due to the flattening
    of the Earth.

    Does anyone know the exact numbers, based on current estimates for the
    earth's diameter and flattening?

    Thanks in advance,

    * Robert H. van Gent
    * E-mail: r.h.vangent@astro.uu.nl
    * Homepage: http://www.phys.uu.nl/~vgent/

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