minute of arc

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min·ute of arc

See minute1.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.minute of arc - a unit of angular distance equal to a 60th of a degreeminute of arc - a unit of angular distance equal to a 60th of a degree
angular unit - a unit of measurement for angles
arcdegree, degree - a measure for arcs and angles; "there are 360 degrees in a circle"
arcsecond, second - a 60th part of a minute of arc; "the treasure is 2 minutes and 45 seconds south of here"
References in periodicals archive ?
Atmospheric turbulence or Seeing measured in arc-second.
Solar granules are typically the size of Alaska--though they look small from Earth, a mere arc-second or two across.
The mean sky brightness per square arc-second based on these measurements are: B = 20.
With an angular measuring sensitivity of 1 arc-second (0.
We're likely to get very important microwave background observations on the degree, arc-minute, and arc-second scales," says David N.
In particular, an unidentified foreground galaxy splits the quasar's image into two components separated in space by one arc-second -- equivalent to a separation of about 10,000 light-years at the estimated location of the foreground galaxy.
Jeff Hester and his colleagues at the California Institue of Technology in Pasadena photographed this bright star, its gas halo and the surrounding interstellar medium in unprecedented detail, resolving structures just a few tenths of an arc-second across.
25 arc-second across, fractionally better than the 0.
4 arc-second apart, making Porrima appear single in almost any telescope.