Convert chain (US survey) to parsec
Please provide values below to convert chain (US survey) [ch (US)] to parsec [pc], or Convert parsec to chain (US survey).
How to Convert Chain (Us Survey) to Parsec
1 ch (US) = 6.51942392029019e-16 pc
Example: convert 15 ch (US) to pc:
15 ch (US) = 15 × 6.51942392029019e-16 pc = 9.77913588043528e-15 pc
Chain (Us Survey) to Parsec Conversion Table
| chain (US survey) | parsec |
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Chain (Us Survey)
A U.S. survey chain is a unit of length equal to 66 U.S. survey feet.
History/Origin
The U.S. survey chain is based on the U.S. survey foot, which was slightly different from the international foot. The use of survey units was officially phased out in 2022.
Current Use
The U.S. survey chain was used for land surveying in the United States.
Parsec
A parsec is a unit of length used to measure the large distances to astronomical objects outside the Solar System, approximately equal to 3.26 light-years. It is the distance at which one astronomical unit subtends an angle of one arcsecond.
History/Origin
The term "parsec" is a portmanteau of "parallax" and "second," coined by British astronomer Herbert Hall Turner in 1913.
Current Use
The parsec is the preferred unit of distance in astronomy and astrophysics for expressing the distances to stars and galaxies.