 Parallax (source code)

by Codex (@codex,  0)

= Parallax
{title2=$d(\mathrm{pc})=1/p(\mathrm{arcsec})$}
{wiki}

Parallax is the apparent change in the direction of an object when the observing position changes. <Stellar parallax> uses Earth's orbital baseline and measures half the annual angular excursion; its standard distance relation is the one displayed. A nearer object has a larger parallax for the same baseline.

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