# minute of arc

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Related to Milliarcsecond: Arc second

## min·ute of arc

(mĭn′ĭt)
n.
See minute1.
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 minute of arc - a unit of angular distance equal to a 60th of a degreeangular unit - a unit of measurement for anglesarcdegree, 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 ?
Coordinates are then entered with an allowable resolution of 1 milliarcsecond for latitude and longitude and 1 cm for altitude, and are saved by touching the Save button.
13 milliarcsecond an hour) that Hubble could actually photograph its movement in a few hours.
Each degree in the 180 degrees is composed of 60 minutes, and each minute is composed of 60 seconds, and a thousandth of a second is a milliarcsecond.
The amplitudes are below 1 milliarcsecond for diurnal and sub-diurnal variations, and several milliarcseconds for longer periods.
The stars move on the sky only about one milliarcsecond a year, which would be like watching a golf ball on the Moon moving one foot per month.
1 milliarcsecond (mas), their dominant part being the retrograde Free Core Nutation (FCN) with the period of about 430 days.
In a microlensing event, one star passes in front of another from our perspective, and this alignment--within a fraction of a milliarcsecond (1/3,600,000[degrees])--boosts the light of the background star like a magnifying glass would.
To look at it another way, that's a resolution of about 1 milliarcsecond, hundreds of times finer than any amateur telescope could ever resolve directly.
033 milliarcsecond, yields a distance of 6,070 [+ or -] 300 light-years, more than a threefold improvement.
The images come from an array of radio telescopes in Australia, South Africa, Chile, and Antarctica known as TANAMI (Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry).
During the close alignment, Stein 2051 B deflected the starlight, which appeared offset by about 2 milliarcseconds from its actual position.

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