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    unit:MilliARCSEC
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    http://qudt.org/vocab/unit/MilliARCSEC

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    lang:en
    Milli ArcSecond
    lang:""
    A minute of arc, arcminute, or minute arc (MOA), is a unit of angular measurement equal to one sixtieth (1/60) of one degree (circle/21,600), or \(\pi /10,800 radians\). In turn, a second of arc or arcsecond is one sixtieth (1/60) of one minute of arc. Since one degree is defined as one three hundred and sixtieth (1/360) of a rotation, one minute of arc is 1/21,600 of a rotation. the milliarcsecond, abbreviated mas, is used in astronomy.
    lang:""
    0.000000290888209
    lang:""
    http://en.wikipedia.org/wiki/Minute_of_arc
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    mas
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    m''