Parsecs to US Leagues


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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 (1/3600 of a degree). 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). The parallax angle is obtained by halving the angular difference in measurements.

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 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.

With the parsec defined, deriving and describing huge distances became easy, since a distance in parsecs can be calculated as the reciprocal of the parallax angle in arcseconds (if the parallax angle is 1 arcsecond, the object is 1 pc from the sun. 0.5 arcseconds means the object is 2 pc distant).

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US lea =
pc * 6391200000000

US Leagues

A unit of distance equal to 3.0 statute miles (4.8 kilometers). Note that there also Nautical Leagues, UK Leagues and UK Nautical Leagues which all differ.

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Pársecs a Leguas estadounidenses :: Parsecs en Lieues américaines :: Parsec in Amerikanische Leugen :: Parsecs em Léguas americanas :: Parsecs a Leghe americane :: Parsecs naar Leugas :: Парсеки в Лиги (США) :: 秒差距 到 美式裏格 :: 秒差距 到 美式里格 :: パーセク から リーグ(アメリカ) :: 파섹에서 미국 리그으로 :: Parsec till USA League :: Parsecs til Amerikanske leagues :: Parsec til Amerikansk league :: Parsec do Legua (pěší hodina) USA :: Parsec a Llegües nord-americanes :: Παρσέκ για Αμερικανικές Λεύγες :: Parseki do Ligi lądowe (US) :: Parsek v Stara milja :: Parsec do Legua (pešia hodina) USA :: Parszek to Amerikai leuga :: Парсеки в Лиги (САЩ) :: Parsecs em Léguas :: Parallaksisekuntit = Yhdysvaltain leguat :: Парсеци у Америчке лиге :: Parsekai įJAV Lygos :: पारसेक्स से अमेरिकी लीग को :: Parseci u Američke lige :: парсэкi ў Лігі (ЗША) :: Parsek në Lega amerikane :: Парсеки в Ліги (США) :: Parseci în Leghe americane