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    Re: Equal Azimuth Lines
    From: David Iwancio
    Date: 2020 May 13, 18:52 -0700

    Correcting what I wrote earlier (because I only think of these things an hour or so after I hit "send"):

    The center of the circle of equal azimuth is 5400 nmi (90°) from the observer, where the initial great-circle bearing is 090° or 270°, whichever is closer to the body observed.

    The radius of the circle (analogous to zenith distance, i.e. the complement of altitude) is the body's ampllitude.

       
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