annual parallax
Britishnoun
"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012Example Sentences
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The annual parallax of a heavenly body is the angle subtended at that body by the radius of the Earth’s orbit.
From Project Gutenberg
With their annual parallax, however, the case was very different.
From Project Gutenberg
Half of this major axis, or, what comes to the same thing, the angle which the radius of the earth's orbit subtends as seen from the star, is called the star's "annual parallax."
From Project Gutenberg
The annual parallax of a star is the angle under which one would see the radius, or half-diameter, of the terrestrial orbit from it.
From Project Gutenberg
Here we have only to do with near stars for which the annual parallax is well determined.
From Project Gutenberg
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