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angular size
subjectfact 
angular sizehas definition The angle subtended by an object on the sky. For example, the angular size of the moon is 30 arcminutes.has source: Hawley, J.F., Halcomb, K.H. 1998 Foundations of Modern Cosmology, Oxford University Press, 2001-09-27 09:33:30.0
is a kind of angle2001-09-27 09:33:30.0
anglehas unit angle unit2001-09-27 09:33:30.0
numberhas value2001-09-27 09:32:57.0