minute of arc

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min·ute of arc

See minute1.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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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"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Measured in degrees ([degrees]), arcminutes (') and arcseconds (").
A 31-mm Tele Vue Nagler eyepiece produces 645x and gave us a true field of view of about 7.6 arcminutes. My first look through the eyepiece left me speechless.
M27 is of course somewhat larger (on the sky), about 8 arcminutes long, whereas M76 is about 3 arcminutes.
A prominent magnitude 9 yellow star (HD 20224) is situated about 4 arcminutes to the north-east.
In 2008 the angular separation is closer to 42 arcminutes, and it will be after 2060 before the separation is under 30 arcminutes (0.5[degrees]).
It's small (about 8 by 4 arcminutes in extent) and presents a pallid face to small scopes.
Both clusters are small, at 10 and 4 arcminutes across, respectively, and they can be rather challenging to pull out of the rich background star field.
It is about magnitude 9.8, and lies close to Regulus, only 12 arcminutes away from Leo's brightest star.
Measured in degrees ([degrees]), arcminutes O and arcseconds ('').
By mid-April next year, they'll be only 8 arcminutes apart as seen from Earth, and for a few days the Sun's interference will disrupt the ability of ground controllers to send the spacecraft any commands.
10 arcminutes If you aim your binoculars or telescope towards Delta Telescopii (see skymap on p.169), it won't take long to discover that this designation is shared by two stars!
Although the galaxies are just 38 arcminutes apart, they aren't twins.