Parsec

Parsec is length unit, symbol: [pc]. Definition of 1 parsec ≈ 3.085677581x1016. Distance of star with parallax shift of one arc second from a base of one astronomical unit . Compared to metre, parsec is bigger unit.

• 1 [pc] = `3.085677581*10^16` [m]

• 1 [m] = `1/(3.085677581*10^16)` [pc] = 3.2407792899604 × 10-17 [pc]


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Source or more info

P. Kenneth Seidelmann, Ed. (1992). Explanatory Supplement to the Astronomical Almanac. Sausalito, CA: University Science Books. p. 716 and s.v. parsec in Glossary.

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