A unit of angular measure equal to 1/60 of an arc minute, or 1/3600 of a degree. The arc second is denoted
(not to be confused with the symbol
for inches).
Arc Second
See also
Arc Minute, DegreeExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Arc Second." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ArcSecond.html
