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# What is a Parsec? - Universe Today.

parsec or kilometer The SI base unit for length is the metre. 1 metre is equal to 3.2407792700054E-17 parsec, or 0.001 kilometer. Note that rounding errors may occur, so always check the results. Nov 14, 2013 · One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond. A parsec is equivalent to 3.26 light years, and since a light year is the distance light travels in 1 year 9.4 trillion km, 1 parsec equals 30.8 trillion km. The term parsec is a combination of 2 words. One parsec equals 3.26 light-years, which is equivalent to 3.09 × 10 13 km 1.92 × 10 13 miles. In the Milky Way Galaxy, wherein Earth is located, distances to remote stars are measured in terms of kiloparsecs 1 kiloparsec = 1,000 parsecs. Jan 24, 2020 · A parsec is an astronomical unit of measurement that is equivalent to 3.26 light years distance, or the distance photons will travel in vacuum over the period of 3.26 years. Light travels at an approximate speed of 186,000 miles per second 300,000 kilometers per second, so this distance is just over 19 trillion miles about 31 trillion kilometers.

Its metric equivalent is about 30.8 trillion km 19.1 trillion mi. It is used in measuring distances in interstellar and intergalactic space. The closest star to Earth, Alpha Centauri, is about 1.3 parsecs away. One parsec equals 30.857 × 10 12 km, 206 265 astronomical units, and 3.2616 light-years. Parsec a unit of distance in astronomy equal to 206,265 astronomical units, or 30,857 X 10 12 km; its international abbreviation is pc. Definition: Astronomers used trigonometry to calculate the distance to stars long before the term parsec was coined, but the new unit made it easier to conceptualise unfathomable distances. A parsec is the distance from the sun to an astronomical object which has a parallax angle of one arcsecond 1. Sep 29, 2016 · One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond. A parsec is equal to about 3.26 light-years 31 trillion kilometres or 19 trillion miles in length. How many kilometer in 1 parsec? The answer is 30856776000000. We assume you are converting between kilometre and parsec. You can view more details on each measurement unit: kilometer or parsec The SI base unit for length is the metre. 1 metre is equal.

## What is a Parsec? with pictures.

The definition of a parsec is as follows: The parsec symbol pc is a unit of length used in astronomy. It stands for "parallax of one arc second", and is approximately 19,131,554,073,600 19 trillion miles. A palavra parsec surgiu da contração das palavras "paralax" e "second". A palavra surgiu pela primeira vez em um artigo astronômico em 1913, numa nota de rodapé, na qual Frank Dyson expressa preocupação em adotar um nome para representar a distância das estrelas a partir de suas paralaxes. Parsecs synonyms, Parsecs pronunciation, Parsecs translation, English dictionary definition of Parsecs. n. A unit of astronomical length based on the distance from Earth at which stellar parallax is one second of arc and equal to 3.258 light-years, 3.086 ×. 1 parsec is equal 30856776029497 kilometers km use this converter kilometers to parsecs km to pc converter. Definition. Astronomical unit - a unit of length that is roughly equal to 150 million kilometers, the average distance from the Earth to the Sun. Other units of length used in astronomy are based on the speed of light and the time.