Nadir
contributor: AAS Frey.Katie
broader: Horizontal coordinate system
definition: The point on the celestial sphere blocked from view by Earth and diametrically opposite to the zenith.
modified: 2020-11-10T19:38:21.956Z
modified: 2020-11-10T19:38:08.834Z
type: Concept

Horizontal coordinate system
type: Concept
narrower: Nadir