zenith concept from the Astronomy knowledge base

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zenith

subject fact

zenith has antonym nadir 2001-09-27 09:32:40.0
has elevation 90
has azimuth 0
is opposite of nadir
has definition The point in the sky directly overhead. has source: McLean, I.S. 1997 Electronic Imaging in Astronomy, Wiley, 2001-09-27 09:32:40.0
has definition The point on the celestial sphere directly above the observer's head - i.e., opposite to the direction of gravity (nadir). has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:40.0
is an instance of local coordinate

local coordinate has component local coordinate component
has coordinate origin observer location on the surface of the Earth

point has dimensions 0 2001-09-27 09:32:38.0

zenith	has antonym nadir
	has elevation 90
	has azimuth 0
	is opposite of nadir
	has definition The point in the sky directly overhead.
	has definition The point on the celestial sphere directly above the observer's head - i.e., opposite to the direction of gravity (nadir).
	is an instance of local coordinate
local coordinate	has component local coordinate component
local coordinate	has coordinate origin observer location on the surface of the Earth
point	has dimensions 0