View source for Argument of Perigee

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'''Argument of Perigee'''
 
<BR/>In celestial mechanics, the angle or arc, as seen from a focus
of an elliptical 
[[Orbit|orbit]], from the 
[[Ascending Node|ascending node]]
to the closest approach of the orbiting body to the focus. The
angle is measured in the orbital plane in the direction of motion
of the orbiting body.

==References==
''This article is based on NASA's [[NASA SP-7|Dictionary of Technical Terms for Aerospace Use]]''
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