›› Measurement unit: arcseconds

Full name: arcsecond

Plural form: arcseconds

Symbol: sec

Category type: angle

Scale factor: 4.8481368111E-6


›› SI unit: radian

The SI derived unit for angle is the radian.
1 radian is equal to 206264.806247 arcseconds.


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›› Definition: Second

A second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 (approximately 7.710-7) of a circle. It is the angular diameter of an object of 1 unit diameter at a distance of 3606060/(2pi) (approximately 206,265 units), such as (approximately) 1 cm at 2.1 km, or, directly from the definition, 1 astronomical unit at 1 parsec.


›› Sample conversions: arcseconds

arcseconds to revolution
arcseconds to grad
arcseconds to 1/16 circle
arcseconds to 1/2 circle
arcseconds to 1/4 circle
arcseconds to mil
arcseconds to degree
arcseconds to radian
arcseconds to 1/10 circle
arcseconds to arcsecond