minute of arc


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Related to minute of arc: Arc second

minute of arc

(arc minute; arc min) See arc second.
References in periodicals archive ?
A nautical mile is equal to one minute of arc of latitude along any meridian.
The answer given for question 3 of the February 2008 IFR quiz says that one minute of arc equals one nautical mile of longitude, but omits the critical words "at the equator." A minute of longitude at any latitude other than that is less than one nm, and becomes vanishingly small at either pole.
they together should determine positions of radio sources to 0.1 or 0.2 minute of arc."