Origin of parallax
Examples from the Web for parallax
Hooke believed he had found a parallax for the bright star in the Head of the Dragon; but was deceived.
Bessel had anticipated him with the parallax of 61 Cygni by just two months.
It is only the difference between the parallax of the star and that of the comparison star.
In such a case, no matter how near the stars were to the earth, no parallax could be detected.
The parallax of Canopus is very small, so its distance from the earth is very great, and it must be a sun of gigantic size.Astronomical Curiosities|J. Ellard Gore