Arc minute Conversion

An Arc minute (also written as arcminute) is a unit of angular measurement that is used to describe very small angles. Arc Minute: An arc minute is 1/60th of a degree. Since a degree is already a small unit of measurement, an arc minute is even smaller. It is used when we need to measure angles that are too small to be conveniently expressed in whole degrees.

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   Arc minute (arcmin) =    Degree (°)

What is Arc minute ?

An Arc minute (also written as arcminute) is a unit of angular measurement that is used to describe very small angles. To understand it better, let's break down the concept:

What is an Angle?

An angle is the amount of rotation or turning between two straight lines that meet at a common point called the vertex. Angles are measured in degrees (°), and a full circle has 360 degrees.

What is an Arc Minute?
  • Arc Minute: An arc minute is 1/60th of a degree. Since a degree is already a small unit of measurement, an arc minute is even smaller. It is used when we need to measure angles that are too small to be conveniently expressed in whole degrees.

    • Imagine a circle divided into 360 equal slices, each slice represents one degree.
    • Now, if you further divide each of those 360 slices into 60 smaller parts, each of those smaller parts is one arc minute.
Practical Example

Arc minutes are commonly used in fields like astronomy, navigation, and optics, where precise measurements of angles are required. For example:

  • In astronomy, when measuring the apparent size of celestial objects (like the Moon or planets), their size might be described in degrees, arc minutes, and even smaller units like arc seconds.
Symbol

An arc minute is typically represented by a single prime symbol (′). So, 5 arc minutes can be written as 5′.

Summary
  • 1 Degree = 60 Arc Minutes
  • 1 Arc Minute = 1/60th of a Degree

In essence, an arc minute is a very small part of a degree, useful for measuring tiny angles accurately.




List of Angle conversion units
Degree Radian Milliradian Microradian Gradian Revolution Arc minute Arc second Milliarcsecond Microarcsecond