solar parallax

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  • noun

Words related to solar parallax

the angle subtended by the mean equatorial radius of the Earth at a distance of one astronomical unit

References in periodicals archive ?
You can even combine your timings with those of a distant colleague to compute your own solar parallax (http://home.
Finally, in that first issue was a summary of the 1931 campaign to measure the mean Earth-Sun distance (the so-called solar parallax or astronomical unit) by triangulating the distance to asteroid 433 Eros during its close flyby of Earth.
Both books describe Edmond Halley's proposal for using the shift in Venus's track across the face of the Sun as seen by widely spaced observers to determine the elusive solar parallax, which thus set the scale of the solar system.
The point is that, after the observations were reduced, we knew the solar parallax far better than before.