# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Astro*Dictionary by Michael Erlewine





1 article for "Rational Horizon"

Rational Horizon [Astro*Index]


The great circle formed by the intersection of the Celestial Sphere with a plane through the center of the Earth which is perpendicular to the local vertical. Identical to the Astronomical Horizon.


See also:
♦ Great Circle ♦ Celestial Sphere


Astro*Index Copyright © 1997 Michael Erlewine