quadrature concept from the Astronomy knowledge base

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quadrature

subject fact

quadrature has elongation 90° has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:00.0
has definition Elongation of a planet when it makes a 90° angle with the Sun as seen from Earth. (b) A configuration in which two celestial bodies have apparent longitudes (see longitude, celestial) that differ by 90° as viewed from a third body. Quadratures are usually tabulated with respect to the Sun as viewed from the center of the Earth. has source: Seidelman, P. 1992 Explanatory Supplement to the Astronomical Almanac, University Science Books, Mill Valley, CA, 2001-09-27 09:30:00.0
is a kind of planetary elongation event

event has duration 2001-09-27 09:29:57.0
has synonym world point
has time of occurrence

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

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

quadrature	has elongation 90°
	has definition Elongation of a planet when it makes a 90° angle with the Sun as seen from Earth. (b) A configuration in which two celestial bodies have apparent longitudes (see longitude, celestial) that differ by 90° as viewed from a third body. Quadratures are usually tabulated with respect to the Sun as viewed from the center of the Earth.
	is a kind of planetary elongation event
event	has duration
	has synonym world point
	has time of occurrence
angle	has unit angle unit
number	has value