It is exactly 648,000/ astronomical units, or approximately 30.9 trillion kilometers. The megaparsec (Mpc) is commonly used to describe distances of one million parsecs. 1 Parsec 1.9173512 x 10 13 Miles (rounded to 8 digits) Display result as A parsec is a unit of distance used in astronomy. The centre of the Milky Way is over 8kpc from the earth.Īstronomy – despite the enormous distance it describes, the parsec is a relatively small unit in astronomical terms.Proxima Centauri – the nearest star to the Earth other than the Sun, is 1.29 parsecs away.
#Parsec unit to miles Pc
Turner’s was accepted – parsec being derived from the definition of the unit as the distance from the sun to an astronomical object which has a parallax angle of one arcsecond. Miles 1 mi 5.2155287050981E-14 pc Yards 1 yd 2.9633685824421E-17 pc Feet 1 ft 9.877895274807E-18 pc Inches 1 in 8. The formula used in miles to parsecs conversion is 1 Mile 5.21552867350756E-14 Parsec. A unit of distance useful in astronomy had been defined but was without a name, and the Astronomer Royal appealed for suggestions. mi stands for miles and pc stands for parsecs. The term parsec was coined by British astronomer Herbert Hall Turner in 1913. The concept of parallax and distances in parsecs. With the parsec defined, deriving and describing huge distances became easy, since a distance i About 4.85 x 10-6 pc is the equivalent of one astronomical unit and one parsec is equal to 3.262 light-years. The distance from the Sun of a body with a parallax angle of 1 arcsecond was thus defined as a unit and, thanks to Turner, named the parsec. Once the parallax angle is established you can calculate the distance to a star using trigonometry, because we know Earth’s distance from the Sun. The unit was likely named by a British astronomer, Herbert Hall Turner, who suggested the unit of astronomical measurement in 1913. The parallax angle is obtained by halving the angular difference in measurements. To be exact, a parsec is a unit of distance that’s equal to 19 trillion miles: 1 parsec 3.26 light-years 19 trillion miles The term parsec is a portmanteau a combination of two words: Parallax and Arcsecond. The parallax angle is found by measuring the parallax motion (or apparent movement of a star relative to stable, more distant stars) when the star is observed from opposite sides of the Sun (an interval of six months on Earth). You are currently converting length units from international mile to parsec international mile Open international mile information in new window parsec Open. The parsec is a unit of length equivalent to around 20 trillion (20,000,000,000,000) miles, 31 trillion kilometres, or 206,264 times the distance from the earth to the sun.Ī parsec is also equivalent to approximately 3.26 light years (the journey distance if you travelled at the speed of light for three years and three months).Īstronomers 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.Ī parsec is the distance from the sun to an astronomical object which has a parallax angle of one arcsecond (1/3600 of a degree).
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