Stellar Parallax Distance Calculator
Distance from Parallax Angle
d(pc) = 1 / p(arcsec)
Formula
distance (parsecs) = 1 / parallax (arcseconds)
Frequently Asked Questions
What is stellar parallax?
Stellar parallax is the apparent shift in a star position as Earth orbits the Sun. Closer stars show more parallax.
How accurate is parallax measurement?
Ground telescopes measure down to ~0.01 arcsec. The Gaia satellite reaches micro-arcsecond precision.
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