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parsec
(redirected from Kiloparsec)

    Also found in: Acronyms, Encyclopedia, Wikipedia 0.03 sec.

parsec

Unit used for distances to stars and galaxies. One parsec is equal to 3.2616 light years, 2.063 × 105 astronomical units, and 3.857 × 1013 km.

A parsec is the distance at which a star would have a parallax (apparent shift in position) of one second of arc when viewed from two points the same distance apart as the Earth's distance from the Sun; or the distance at which one astronomical unit subtends an angle of one second of arc.



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? Mentioned in ? References in periodicals archive
 
Pennypacker says that on the basis of observations made so far, they have calculated a "preliminary' value of the Hubble constant to be 100 kilometers per second per kiloparsec.
Seeking supernovas systematically: automated patrols will alert ... by Thomsen, Dietrick E. / Science News
quoted the distance to 1987A as 50 kiloparsecs or 1.
Scientists, 'boxed in,' scramble after supernova, find neutrinos by Thomsen, Dietrick E. / Science News
It would be capable of measuring parallaxes of objects at kiloparsec distances with 10 percent accuracy.
Star tracks by Thomsen, Dietrick E. / Science News
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