annual parallax
Britishnoun
Example 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
We have in a previous chapter discussed the important question of the annual parallax of stars, and we have shown how, in virtue of annual parallax, each star describes an ellipse.
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
In order to obtain available annual parallaxes of a star it is usually necessary for the star to be nearer to us than 5 siriometers, corresponding to a parallax greater than 0″.04.
From Project Gutenberg
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