Difference between revisions of "Celestial horizon"
Jump to navigation
Jump to search
| (One intermediate revision by one other user not shown) | |||
| Line 12: | Line 12: | ||
[[Category:Alphabetical Index]] | [[Category:Alphabetical Index]] | ||
[[Category:IALA Dictionary 1970-89 Edition]] | [[Category:IALA Dictionary 1970-89 Edition]] | ||
[[Category:IALA Dictionary 2023 Revision]] | |||
Latest revision as of 19:56, 2 February 2024
1-2-105
Alternative term: Rational horizon
The great circle on the celestial sphere, every point of which is 90 degrees from the observer's zenith. This circle encloses the horizontal plane through the observer and divides the celestial sphere into two hemispheres.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
