What does minute and second of arc mean?

Definitions for minute and second of arc
minute and sec·ond of arc

This dictionary definitions page includes all the possible meanings, example usage and translations of the word minute and second of arc.

Wikipedia

  1. Minute and second of arc

    A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol ′, is a unit of angular measurement equal to 1/60 of one degree. Since one degree is 1/360 of a turn (or complete rotation), one minute of arc is 1/21600 of a turn. The nautical mile (nmi) was originally defined as the arc length of a minute of latitude on a spherical Earth, so the actual Earth circumference is very near 21600 nmi. A minute of arc is π/10800 of a radian. A second of arc, arcsecond (arcsec), or arc second, denoted by the symbol ″, is 1/60 of an arcminute, 1/3600 of a degree, 1/1296000 of a turn, and π/648000 (about 1/206264.8) of a radian. These units originated in Babylonian astronomy as sexagesimal subdivisions of the degree; they are used in fields that involve very small angles, such as astronomy, optometry, ophthalmology, optics, navigation, land surveying, and marksmanship. To express even smaller angles, standard SI prefixes can be employed; the milliarcsecond (mas) and microarcsecond (μas), for instance, are commonly used in astronomy. For a three-dimensional area such as on a sphere, square arcminutes or seconds may be used.

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Numerology

  1. Chaldean Numerology

    The numerical value of minute and second of arc in Chaldean Numerology is: 2

  2. Pythagorean Numerology

    The numerical value of minute and second of arc in Pythagorean Numerology is: 6

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"minute and second of arc." Definitions.net. STANDS4 LLC, 2024. Web. 14 Nov. 2024. <https://www.definitions.net/definition/minute+and+second+of+arc>.

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