zenith distance concept from the Astronomy knowledge base

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zenith distance

subject fact

zenith distance has definition Angular distance on the celestial sphere measured along the great circle from the zenith to the celestial object. Zenith distance is 90° minus altitude. has source: Seidelman, P. 1992 Explanatory Supplement to the Astronomical Almanac, University Science Books, Mill Valley, CA, 2001-09-27 09:33:32.0
is an instance of local coordinate component
is an instance of angle

local coordinate component is a component of local coordinate

angle has unit angle unit 2001-09-27 09:33:30.0

number has value 2001-09-27 09:32:57.0

zenith distance	has definition Angular distance on the celestial sphere measured along the great circle from the zenith to the celestial object. Zenith distance is 90° minus altitude.
	is an instance of local coordinate component
	is an instance of angle
local coordinate component	is a component of local coordinate
angle	has unit angle unit
number	has value