Online Astronomy Star Distance Calculator
Calculate stellar distance using the parallax method.
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Understanding Stellar Parallax
Stellar parallax is the apparent shift in the position of a nearby star against the background of distant objects. Astronomers view a star from two different locations in Earth's orbit (e.g., six months apart) and measure the small angle of this shift.
The distance (d) to the star in parsecs is the reciprocal of the parallax angle (p) in arcseconds.
d = 1 / p
p