Astronomy & Space
Intermediate

Parsec

Distance at which 1 AU subtends one arcsecond.

Formula

1 pc≈3.26 ly1\,pc \approx 3.26\,ly

Variables

pcParsec

Example

≈ 3.086×10¹³ km

Did You Know?

The parsec, about 3.26 light-years, is defined by parallax and is astronomers' preferred distance unit.

distance

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