Astro*Dictionary by Michael Erlewine
1 article for "Rational Horizon"
Rational Horizon [Astro*Index](Horizon)
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